Pirita

Características generales


Datos generales


Fórmula: FeS2
Sistema de cristalización: Cúbico
Lustre: Metálico
Color: Amarillo latón
Dureza: 6-6,5
Rareza: muy común
Características distintivas: Hábito cristalino, dureza, raya, brillo y fractura
Grupo de minerales: Grupo de la Pirita
La pirita es un mineral conocido desde la antiguedad. Los griegos denominaban como pirita a algunos minerales que al ser golpeados o frotados desprendían chispas . En el siglo XVI se restringió a los sulfuros metálicos y en el siglos XVIII se acordó que las piritas eran tres: arsenopirita, calcopirita y pirita propiamente dicha. Hasta el siglo XIX el término no adquirió su significado actual. La pirita ha engañado a más de un buscador inexperto de oro por su semejanza con el metal precioso (por eso se la denominó oro de los locos); las inclusiones doradas que aparecen en el lapisázula, por ejemplo, son de pirita.


Fotografías

Puedes ver 7 fotografías de Pirita en su galería de fotografías.

Polimorfos



Clasificación

Estado IMA: Válido. Descrito con antelación a 1959 (pre-IMA), se considera un mineral clásico o histórico (grandfathered)

Nickel-Strunz : 02.EB.05a
  • 2: Sulfuros y sulfosales
  • 02.E: Sulfuros con metal, M:S = 1:2
  • 02.EB: M:S = 1:2 - Con Fe, Co, Ni, grupo del platino, etc.

Dana 8th ed. : 2.12.1.1

Etimología:

Los griegos denominaban pirita (de pyr, fuego), a ciertos minerales y rocas que por frotamiento desprendían chispas que podían encender el fuego.



Formación y ambiente

La pirita aparece en grandes concentraciones de distinto origen. Así es un mineral muy común en todos los yacimientos de sulfuros metálicos y en casi todas las rocas plutónicas, volcánicas, sedimentarias,y metamórficas.

Accesorio, hidrotermal, infiltración, magmático, metamórfico, postmagmático, postvolcánico, sedimentario.

Propiedades fisicas

Hábito: Forma los típicos cubos dorados o dodecaedros o maclas de penetración. Mas raras, pero tambien puede aparecer de cualquier otra forma, como la octaedricas o algunas muy curiosas como la diquisdodecaedrica o diploedrica con formas extrañas de 24 caras o incluso la botroidal (como frambuesas), estalactítico, esferoidal, radiado, o en formas macladas, las mas buscadas las Cruces de hierro, formados por dos cristales pentagonododecaedricos girados 90 grados en luno respecto al otro recordando a un motivo heraldico. Tambien puede aparecer sustityendo por ejemplo a un fosil, como un ammonites (te encuentras el caracol dorado) conocidos como Ammonites piritosos y los Trilobites piritizados

Lustre: Metálico

Transparencia: Opaco

Color: Amarillo latón

Color en sección fina: Incolora

Raya: Gris, parda o negra verdosa

Dureza (Mohs): 6-6,5

Tenacidad: Frágil

Exfoliación::
  • Primera exfoliación: Pobre en [100]
  • Segunda exfoliación: Pobre en [110]
  • Tercera exfoliación: Pobre


Fractura: Concoidal

Densidad: 5 g/cm3 (medida) | 5,01 g/cm3 (calculada)

Cristalografía

Sistema cristalino: Cúbico

Clase (H-M): 2m (2/m3*) - Diploidal

Grupo espacial: Pa3

Parámetros de la celda: a=5,417Å b=5,424Å c=3,387Å

Volumen de unidad de celda: V 158,96Å

Z: 4

Macla: Maclas de cruz de hierro

Difracción de Rayos X:
Difracción de Rayos X
D(hkl)Intensidad
1,633100
2,70985
2,42365

Propiedades ópticas

Tipo: Opaco

Dispersión: Ninguna

Anisotropismo: Muy fuerte

Reflectancia:
Reflectancia
D(hkl)Intensidad
470.045,6
546.051,7
589.053,5
650.054,4


Propiedades químicas

Fórmula: FeS2

Elementos químicos: Fe, S

Composición química: Fe: 46,55%, S: 53,45%,

Tests químicos

Fusibilidad: 2; Mineral tipo: Natrolita; Punto de fusión: 800ºC; Funde con mechero de gas
Reacción a los ácidos: Se disuelve en ácido nítrico.
Formación de sublimados: Se funde en un glóbulo magnético.
Otros: Insoluble en HCl. En carbón quema con una llama azul.



Relaciones con otros minerales

Miembro del grupo de minerales: Grupo de la Pirita

Minerales pertenecientes al Grupo de la Pirita

Minerales acompañantes
NombreImagenClase mineralógica
Aurostibita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

AuSb2
Cattierita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

CoS2
Erlichmanita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

OsS2
Laurita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

RuS2
Maslovita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

PtBiTe
PiritaPirita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

FeS2
Sperrylita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

PtAs2
Testibiopalladita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

PdTe(Sb,Te)
Vaesita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

NiS2
VillamaninitaVillamaninita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

(Cu,Ni,Co,Fe)S2


Minerales acompañantes:

Minerales acompañantes
NombreImagenClase mineralógica
AlbitaAlbita9. Silicatos
09.F: Tectosilicatos sin ceolita H2O

Na(AlSi3O8)
ArsenopiritaArsenopirita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

FeAsS
BaritaBarita7. Sulfatos
07.A: Sulfatos (selenatos, etc.) sin aniones adicionales, sin H2O

BaSO4
BiotitaBiotita9. Silicatos
09.E: Filosilicatos

K(Mg, Fe)3AlSi3O10(OH, F)2
CalcitaCalcita5. Carbonatos (nitratos)
05.A: Carbonatos sin aniones adicionales, sin H2O

CaCO3
CalcopiritaCalcopirita2. Sulfuros y sulfosales
02.C: Sulfuros con metal, M:S = 1:1 (y similar)

CuFeS2
FluoritaFluorita3. Haluros
03.A: Haluros simples, sin H2O

CaF2
GalenaGalena2. Sulfuros y sulfosales
02.C: Sulfuros con metal, M:S = 1:1 (y similar)

PbS
OroOro1. Elementos nativos
01.A: Metales y Aleaciones de metales

Au
MarcasitaMarcasita2. Sulfuros y sulfosales
02.E: Sulfuros con metal, M:S = 1:2

FeS2
Microclina9. Silicatos
09.F: Tectosilicatos sin ceolita H2O

K(AlSi3O8)
PirrotinaPirrotina2. Sulfuros y sulfosales
02.C: Sulfuros con metal, M:S = 1:1 (y similar)

Fe7S8
CuarzoCuarzo4. Óxidos
04.D: Metal:Oxígeno = 1:2 y similar

SiO2
PlataPlata1. Elementos nativos
01.A: Metales y Aleaciones de metales

Ag
EsfaleritaEsfalerita2. Sulfuros y sulfosales
02.C: Sulfuros con metal, M:S = 1:1 (y similar)

ZnS




Yacimientos y localidades de interés

Yacimientos:

El yacimiento más importante del mundo, explotado desde hace 30 siglos, esta en Riotinto, Huelva. Hay también yacimienetos en Cartagena, Murcia, Santander y La Rioja (Ambas Aguas y Navajún). En 1985 se encontró en esta región un extraordinario ejemplar que alcanzaba los 35 kilos y presentaba múltiples cristales cúbicos.

Magníficos dodecaedros han sido encontrados en Muros y Castropol (Asturias) en algunos casos icosaedros y cubos asociados a oro y cobre. En Reocín (Cantabria) están asociados bellos ejemplares a la dolomita.

Localidades

  • Lapis-lazuli mine, Sar-e-Sang, Badakshan Province, Afghanistan
  • Lapis-lazuli mine, Sar-e-Sang, Badakshan Province, Afghanistan
  • Lapis-lazuli mine, Sar-e-Sang, Badakshan Province, Afghanistan
  • Lapis-lazuli mine, Sar-e-Sang, Badakshan Province, Afghanistan
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Mir Oceanic Ore Mound, Mid-Atlantic Ridge, Atlantic Ocean
  • Mir Oceanic Ore Mound, Mid-Atlantic Ridge, Atlantic Ocean
  • Mir Oceanic Ore Mound, Mid-Atlantic Ridge, Atlantic Ocean
  • Mir Oceanic Ore Mound, Mid-Atlantic Ridge, Atlantic Ocean
  • Burra Burra mine, Burra, South Australia, Australia
  • Cygnet, Tasmania, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Middlesex Plains, Tasmania, Australia
  • Mt Bischoff, Waratah, Tasmania, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Boddington, Mt Saddleback, Western Australia, Australia
  • Colebrook Hill, Rosebery, Tasmania, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Braidwood, Majors Creek, New South Wales, Australia
  • Braidwood, Majors Creek, New South Wales, Australia
  • Prospect Hill, New South Wales, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Colebrook Hill, Rosebery, Tasmania, Australia
  • Boddington, Mt Saddleback, Western Australia, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Mt Bischoff, Waratah, Tasmania, Australia
  • Middlesex Plains, Tasmania, Australia
  • Cygnet, Tasmania, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Prospect Hill, New South Wales, Australia
  • Colebrook Hill, Rosebery, Tasmania, Australia
  • Boddington, Mt Saddleback, Western Australia, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Cygnet, Tasmania, Australia
  • Middlesex Plains, Tasmania, Australia
  • Mt Bischoff, Waratah, Tasmania, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Colebrook Hill, Rosebery, Tasmania, Australia
  • Boddington, Mt Saddleback, Western Australia, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Prospect Hill, New South Wales, Australia
  • Braidwood, Majors Creek, New South Wales, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Mt Bischoff, Waratah, Tasmania, Australia
  • Middlesex Plains, Tasmania, Australia
  • Cygnet, Tasmania, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Prospect Hill, New South Wales, Australia
  • Braidwood, Majors Creek, New South Wales, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Brandrücken, Kärnten, Austria
  • Annaberg, Lower Austria, Austria
  • Annaberg, Lower Austria, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Schellgaden, Salzburg, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Neufinkenstein-Grabanz, Mallestiger Mittagskogel, Finkenstein, Villach, Kärnten, Austria
  • Rotgülden, Salzburg, Austria
  • Brandrücken, Kärnten, Austria
  • Breitenau am Hochlantsch Mine, Styria, Austria
  • Rauris valley, Salzburg, Austria
  • Oberdorf / Laming, Bruck an der Mur, Styria, Austria
  • Oberdorf / Laming, Bruck an der Mur, Styria, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Schellgaden, Salzburg, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Annaberg, Lower Austria, Austria
  • Oberdorf / Laming, Bruck an der Mur, Styria, Austria
  • Rauris valley, Salzburg, Austria
  • Breitenau am Hochlantsch Mine, Styria, Austria
  • Rotgülden, Salzburg, Austria
  • Neufinkenstein-Grabanz, Mallestiger Mittagskogel, Finkenstein, Villach, Kärnten, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Schellgaden, Salzburg, Austria
  • Neufinkenstein-Grabanz, Mallestiger Mittagskogel, Finkenstein, Villach, Kärnten, Austria
  • Rotgülden, Salzburg, Austria
  • Brandrücken, Kärnten, Austria
  • Rauris valley, Salzburg, Austria
  • Breitenau am Hochlantsch Mine, Styria, Austria
  • Brandrücken, Kärnten, Austria
  • Rotgülden, Salzburg, Austria
  • Neufinkenstein-Grabanz, Mallestiger Mittagskogel, Finkenstein, Villach, Kärnten, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Schellgaden, Salzburg, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Annaberg, Lower Austria, Austria
  • Oberdorf / Laming, Bruck an der Mur, Styria, Austria
  • Rauris valley, Salzburg, Austria
  • Breitenau am Hochlantsch Mine, Styria, Austria
  • Engis, Liege, Walloon, Belgium
  • Boutelicon, Luettich, Belgium
  • Bioul, Namur, Walloon Brabant, Belgium
  • Andenelle, Namur, Walloon Brabant, Belgium
  • Siglo Veinte (XX) mine, Llallagua, Bustillo, Potosí Dept, Bolivia
  • Aliada Mine, Colquechata Mt., Chayanta, Potosí Dept, Bolivia
  • Aceromarca mine, Mururata 2, Sud Yungas, La Paz, Bolivia
  • Machacamarca mine, Colavi, Saavedra, Potosí Dept, Bolivia
  • Chorolque, Atocha-Quechisla, Sud Chichas, Potosí Dept, Bolivia
  • Chocaya, Animas-Chocaya, Potosí Dept, Bolivia
  • Huayna Potosí, Los Andes, La Paz, Bolivia
  • Morococala mine, Santa Fe, Dalence, Oruro Dept., Bolivia
  • Viloco mine, Loayza, La Paz, Bolivia
  • Chicote Grande mine, Inquisivi, La Paz, Bolivia
  • El Dragón mine, Quijarro, Potosí Dept, Bolivia
  • Constancia mine, Tazna, Sud Chichas, Potosí Dept, Bolivia
  • Itos Mine, Oruro City, Oruro Dept., Bolivia
  • San José and Itos mines, Oruro Dept., Bolivia
  • San Francisco mine, Aranibar, Alto Chapare, Villa Tunari, Cochabamba, Bolivia
  • Oruro City, Oruro Dept., Bolivia
  • Amayapampa, Bustillo, Potosí Dept, Bolivia
  • Cerro Rico Mt., Potosí, City, Potosí Dept, Bolivia
  • Animas mine, Chocoya, Sud-Chicas, Potosí Dept, Bolivia
  • Pulacayo mine, Huanchaca, Potosí Dept, Bolivia
  • Quime, Inquisivi, La Paz, Bolivia
  • Mina Flores mine, Huanuni district, Oruro Dept., Bolivia
  • Lavra da Ilha pegmatite, Taquaral, Minas Gerais, Brazil
  • Alto Benedito Pegmatite, Paraíba, Brazil
  • Lavra do Énio pegmatite, Galiléia, Minas Gerais, Brazil
  • Jaguaracu Pegmatite, Jaguaracu, Minas Gerais, Brazil
  • Jacuaracu pegmatite, Lavra de Sr. Jose Pinto, Municipo de Timoteo, Jacuaracu, Minas Gerais, Brazil
  • Morro Velho Gold mine, Nova Lima, Minas Gerais, Brazil
  • Chapada Diamantina, Serra de Mangabeira, Bahia, Brazil
  • Zé Pinto prospect, Conselheira Pena, Minas Gerais, Brazil
  • Sapucaia pegmatite mine, near Galileia, Minas Gerais, Brazil
  • Madan, Rhodope Mtns., Plovdiv, Bulgaria
  • Craigmont Mine, Raglan twp, Renfrew Co., Ontario, Canada
  • Port Radium, Northwest Territories, Canada
  • Demix-Varennes quarry, Saint-Amable sill, Varennes, Verchéres Co., Québec, Canada
  • Poudrette quarry, Mt St.-Hilaire, Rouville Co., Québec, Canada
  • Burgess Mine, Carlow Township, Bancroft, Hastings Co., Ontario, Canada
  • Cameron Quarry, Carleton Place, Ontario, Canada
  • MacDonald mine, Monteagle Township, Bancroft, Hastings Co., Ontario, Canada
  • Rose Quartz Pit, Lyndoch Township, Quadeville, Renfrew Co., Ontario, Canada
  • Rogers Fluorspar mine, Huntingdon Township, Madoc, Hastings Co., Ontario, Canada
  • Davis Hill, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
  • Richardson Mine, Wilberforce, Ontario, Canada
  • Evans-Lou pegmatite, near St-Pierre-de-Wakefield, Portland Twp., Papineau Co., Québec, Canada
  • Hwy 28 road fill, Mayo Township, Bancroft, Hastings Co., Ontario, Canada
  • Henderson No.2 mine, Chibougamau, Abitibi Co., Québec, Canada
  • Unnamed quarry, Carlow Township, Bancroft, Hastings Co., Ontario, Canada
  • Highway 28 Roadcut Near Belton Road, Mayo Township, Bancroft, Hastings Co., Ontario, Canada
  • Highland Bell mine, Beaverdell, British Columbia, Canada
  • Francon quarry, St-Michel distr., Montreal Island, Québec, Canada
  • Beaverdell, British Columbia, Canada
  • Goulding-Keene Quarry, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
  • Engineer mine, Tagish Lake, near Atlin, British Columbia, Canada
  • Ackerman mine, Deloro, Hastings Co., Ontario, Canada
  • Ice River complex, British Columbia, Canada
  • Faraday mine, Faraday Township, Bancroft, Hastings Co., Ontario, Canada
  • Geco mine, Manitouwadge, Thunder Bay District, Ontario, Canada
  • Rapid Creek, Big Fish River - Blow River Area, Yukon Territory, Canada
  • Watson Mine, Monteagle Township, Bancroft, Hastings Co., Ontario, Canada
  • Bicroft mine, Bancroft, Hastings Co., Ontario, Canada
  • Saranac Mine, Tory Hill, Monmouth Township, Hastings Co., Ontario, Canada
  • Desmont Mine, Wilberforce, Monmouth Township, Haliburton Co., Ontario, Canada
  • Bessemer Mine, Mayo Township, Bancroft, Hastings Co., Ontario, Canada
  • Lake George antimony mine, York Co., New Brunswick, Canada
  • East Kemptville Tin Mine, East Kemptville, Yarmouth Co., Nova Scotia, Canada
  • Beryl Pit, Lyndoch Township, Quadeville, Renfrew Co., Ontario, Canada
  • Woodcox Mine, Bancroft, Monteagle Township, Hastings Co., Ontario, Canada
  • Yellow Lake, near Olalla, British Columbia, Canada
  • Van Silver mine, Brandywine Creek, British Columbia, Canada
  • Lincoln Quarry, Beamsville, Ontario, Canada
  • Dundas Quarry, Wentworth Co., Ontario, Canada
  • Sherbrooke, Québec, Canada
  • Mt St.-Hilaire, Rouville Co., Québec, Canada
  • Nanisivik Mine, Baffin Island, Nunavut, Northwest Territories, Canada
  • Noranda mine, Rouyn district, Québec, Canada
  • Niobec mine, Chicoutimi, Québec, Canada
  • Parker mine, Notre Dame du Laus, Québec, Canada
  • Cardiff Uranium mine, Wilberforce, Ontario, Canada
  • Silver Islet mine, Lake Superior, Ontario, Canada
  • Silver Crater mine, Faraday Township, Bancroft, Hastings Co., Ontario, Canada
  • Smart Mine, Lake Clear, Renfrew Co., Ontario, Canada
  • Kemp Uranium Mine, Cardiff Township, Haliburton Co., Bancroft, Ontario, Canada
  • Egan Chute, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
  • Wendy open pit, Tambo, Tarapacá, Chile
  • Kaiyang, Guizhou Province, China
  • Xitieshan deposit, Qaidam Basin (Chaidamu), Qinghai, China
  • Hengyang, Hunan province, China
  • Villa de Cobre, Santiago de Cuba, Cuba
  • Hurky, Stredocesky kraj, Bohemia, Czech Republic
  • Medenec (Kupferberg), Chomutov, Krusne Hory, Vychodocesky, Czech Republic
  • Predborice, Stredocesky kraj, Bohemia, Czech Republic
  • Vlastejovice, Kutna Hora, Stredocesky, Czech Republic
  • Borovec, Zdar nad Sazavou, Maehren, Czech Republic
  • Bohutin, Príbram, Stredocesky, Czech Republic
  • Novy rybnik, Pisek, Jihocesky, Czech Republic
  • Policany, Kutna Hora, Czech Republic
  • Trebsko Deposit, Príbram, Stredocesky, Czech Republic
  • Nova mine, Hora, Príbram, Stredocesky, Czech Republic
  • Alexander Gallery, Vrancice, Príbram, Stredocesky, Czech Republic
  • Krupka, Krusne Hory, Vychodocesky, Czech Republic
  • Lahost, Teplice, Krusne Hory, Vychodocesky, Czech Republic
  • Moldava, Teplice, Krusne Hory, Vychodocesky, Czech Republic
  • Krasna Hora nad Vltavou, Príbram, Stredocesky, Czech Republic
  • Nejedly I, Libusin, Kladno, Stredocesky, Czech Republic
  • Kasejovice, Západocesky, Czech Republic
  • Vapenna (Setzdorf), Maehren, Czech Republic
  • Kank, Kutna Hora, Stredocesky kraj, Bohemia, Czech Republic
  • Lill mine, Brezove hory (Birkenberg), Príbram, Stredocesky, Czech Republic
  • Libodrice, Kutna Hora, Stredocesky, Czech Republic
  • Horni Slavkov, Karlovy Vary, Czech Republic
  • Horni Hostice, Maehren, Czech Republic
  • Litce nad Orlici, Vychodocesky, Czech Republic
  • Smallcleugh mine, Nenthead, Cumbria, England
  • Magpie Sough, Sheldon, Derbyshire, England
  • Cobalt Mine, Scar Crag, Causey Pike, Cumbria, England
  • Cligga Head, Perranzabuloe, Cornwall, England
  • Clevedon Beach, Somerset, England
  • Cleator Moor Iron Mines, Cleator Moor area, Cumbria, England
  • Silverwood Colliery, Yorkshire, England
  • Silver Gill, Caldbeck Fells, Cumbria, England
  • Beckermet Mine, Egremont, Cumbria, England
  • Ball Eye quarry, Bosnal, Derbyshire, England
  • St Ives Consols Mine, St.Ives, Cornwall, England
  • Bannerdale Graphite Mine, Mungrisdale, Cumbria, England
  • South Crofty mine, Camborne, Illogan, Cornwall, England
  • Barrow Mine, Braithwaite, Cumbria, England
  • Black Crag, Manesty, Borrowdale, Cumbria, England
  • Brandelhow Mine, Brandlehow, Cumbria, England
  • Lyme Regis to Charmouth coast, Dorset, England
  • Deer Hills Baryte mine, Caldbeck Fells, Cumbria, England
  • Meldon BR Quarry, Okehampton, Devon, England
  • Copper Plate Mine, Borrowdale, Cumbria, England
  • Croft Gothal mine, St. Hilary, Cornwall, England
  • Croft quarry, Leicestershire, England
  • Crowgarth Mine, Cleator Moor, Cumbria, England
  • Manesty Vein, Grange, Borrowdale, Cumbria, England
  • Lyme Regis, Dorset, England
  • Little-Duke Mine, Tavistock Hamlets, Devon, England
  • Lonsdale Mine, Frizington, Cumbria, England
  • New East Wheal Russel, near Tavistock, Devon, England
  • New Cliffe Hill quarry, Markfield, Leicestershire, England
  • Nether Row Brow, Caldbeck Fells, Cumbria, England
  • Nentsberry Haggs mine, Nenthead, Cumbria, England
  • Low Wax Knott, Buttermere, Cumbria, England
  • Middleton-on-Sea, East Sussex, England
  • Leighton Buzard, Bedfordshire, England
  • Seathwaite Mine, Seathwaite Tarn. Conist, Cumbria, England
  • Hay Gill Copper mine, Caldbeck Fells, Cumbria, England
  • Greystones quarry, Lezant, Cornwall, England
  • Frazer's Hush mine, Rookhope, Weardale, Co. Durham, England
  • Gregory mine, Ashover, Derbyshire, England
  • Great Wheal Fortune, Breage, Cornwall, England
  • Goldscope Mine, Newlands Valley, Cumbria, England
  • Graphite Mine, Seathwaite, Cumbria, England
  • Greenside mine, Patterdale, Cumbria, England
  • Great Wheal Vor, Breage, Cornwall, England
  • Hope's Nose, Tor Bay, Torquay, Devon, England
  • Hole Beach, near Trebarwith, Cornwall, England
  • Holmbush mine, Stokeclimsland, Cornwall, England
  • Force Crag Mine, Keswick, Cumbria, England
  • Fall Gate quarry, near Ashover, Derbyshire, England
  • Hampstead Farm quarry, Chipping Sodbury, Gloucestershire, England
  • Shap Blue Quarry, Shap, Cumbria, England
  • Ladywell mine, Shelve, Shropshire, England
  • Dutchman Level Dump, Ecton Hill, Wetton, Staffordshire, England
  • Samphire Hoe, Dover, Kent, England
  • Levant mine, Pendeen, St. Just, Cornwall, England
  • Blackbeck Tarn, Buttermere, Cumbria, England
  • Rotherhope Fell Mine, Alston, Cumbria, England
  • Boltsburn mine, Rookhope, Weardale, Co. Durham, England
  • Bonser Mine, Coniston copper mines, Cumbria, England
  • Robin Hood mine, Bassenthwaite, Cumbria, England
  • Botallack mine, Botallack, St. Just, Cornwall, England
  • Bounds Cliff, St. Endellion, Cornwall, England
  • Reighton Sands, Filey, Yorkshire, England
  • Brandy Gill Lead mine, Caldbeck Fells, Cumbria, England
  • Sidestrand (beach), Cromer, Norfolk, England
  • Shap Pink Quarry, Shap, Cumbria, England
  • Fleetwith Pike, Buttermere Fell, Cumbria, England
  • Vale Road Quarry, Mansfield Woodhouse, Nottinghamshire, England
  • Ecton Hill,Clayton Adi, Ecton Hill, Staffordshire, England
  • Stormy point, Alderly Edge, Cheshire, England
  • Anty Cross Mine, Dalton in Furness, Cumbria, England
  • Thurstaston Beach, Wirral, Merseyside, England
  • Wheal Gorland, Gwennap, Cornwall, England
  • Eskett mine, Cumbria, England
  • Yewthwaite Mine, Newlands Valley, Cumbria, England
  • Wyndham Pit, Nr. Egremont, Cumbria, England
  • Woodleaze Quarry, Tytherington Quarries, Gloucestershire, England
  • Wheal Friendship, Mary Tavy, Devon, England
  • Wheal Tremayne, Gwinear, Cornwall, England
  • Woodend Mine, Threlkeld, Cumbria, England
  • Engine Vein, Alderley Edge, Shropshire, England
  • Wheal Wrey, Liskeard, Cornwall, England
  • Kerriack Cove, Illogan, Cornwall, England
  • Thornthwaite Mine, Thornthwaite, Cumbria, England
  • Threlkeld Quarry, Threlkeld, Cumbria, England
  • Ulpha Copper Mine, Ulpha, Cumbria, England
  • Tynebottom mine, Garrigill, Cumbria, England
  • Tintagel, Cornwall, England
  • Tincroft mine, Redruth, Illogan, Cornwall, England
  • Wheal Edward, St. Just, Cornwall, England
  • Wheal Concord, Blackwater, Cornwall, England
  • Wheal Cock, Botallack, St. Just., Cornwall, England
  • Wheal Buller, Redruth, Illogan, Cornwall, England
  • Whatley Quarry, Wells, Somerset, England
  • West Caradon mine, St. Cleer, Cornwall, England
  • Virtuous Lady mine, Buckland Monachorum, Devon, England
  • Weardale, Co. Durham, England
  • Waterbank mine, Ecton, Staffordshire, England
  • Warden Point, Isle of Sheppey, Kent, England
  • Wheal Unity, Gwinear, Cornwall, England
  • Wheal Rose, Newlyn, Cornwall, England
  • Dale Head Mine, Newlands Valley, Cumbria, England
  • Dubhow Copper Mine, Patterdale, Cumbria, England
  • Ramsley mine, Sticklepath, Devon, England
  • Driggith Mine, Caldbeck Fells, Cumbria, England
  • Brownley Hill Pb-Zn mine, Nenthead, Cumbria, England
  • Potts Gill Copper Mine, Caldbeck Fells, Cumbria, England
  • Cambokeels mine, near Eastgate, Weardale, Co. Durham, England
  • Cammock Eals mine, Stanhope, Weardale, Co. Durham, England
  • Penlee quarry, Newlyn, Cornwall, England
  • Penberthy Croft mine, St. Hilary, Cornwall, England
  • Dolcoath mine, Camborne, Illogan, Cornwall, England
  • Charmouth beach, Dorset, England
  • Coniston Copper Mines, Coniston, Cumbria, England
  • Milltown Quarry, Ashover, Derbyshire, England
  • Millclose mine, Wensley, Derbyshire, England
  • Raper Mine, Alport, Derbyshire, England
  • Red a Venn mine, Okehampton, Devon, England
  • Buckbarrow Beck Veins, Waberthwaite, Cumbria, England
  • Wheal Prospidnick, Sithney, Cornwall, England
  • Wheal Penrose, Porthleven, Cornwall, England
  • Wheal Nangiles, Bissoe, Cornwall, England
  • Wheal Kitty, St. Agnes, Cornwall, England
  • Wheal Jane, Kea, Truro, Cornwall, England
  • Wheal Harmony, St. Agnes, Cornwall, England
  • Wheal Unity, Gwennap, Cornwall, England
  • Wood mine, Alderley Edge, Cheshire, England
  • Carrock mine, Caldbeck Fells, Cumbria, England
  • Dirtlow Rake, Castleton, Derbyshire, England
  • Castle Nook Mine, Newlands Valley, Cumbria, England
  • Oughterside open cast, Coal site, Nr. Aspatria, Cumbria, England
  • Old Treburgett mine, St. Teath, Cornwall, England
  • Old Sandbeds Mine, Caldbeck Fells, Cumbria, England
  • Old Millclose Mine, Matlock, Derbyshire, England
  • Jokisivu (Kujankallio), Huittinen, Turku-Pori, Finland
  • Mine Les Chalances, Allemont, Isère, France
  • Les Farges mine, Corrèze, Limousin, France
  • Trimouns Talc mine, Ariège, Midi-Pyrénées, France
  • Mas d'Alary, Hérault, Languedoc-Roussillon, France
  • Tistoulet mine, Padern, Aude, Languedoc-Roussillon, France
  • Cap Garonne, Le Pradet, Var, France
  • Buhulien, Côtes-du-Nord, France
  • Monsols, Rhône, Rhône-Alpes, France
  • Chazelle, Pontgibaud, Puy-de-Dôme, Auvergne, France
  • Duranus, Alpes-Maritimes, France
  • Saint-Aubain-des-Châteaux, Loire-atlantique, France
  • Bousiéyas, Alpes-Maritimes, France
  • Jas Roux, Valgaudemar, Haute-Alpes, France
  • Chessy-les-Mines, Rhône, Rhône-Alpes, France
  • Falgayrolles, Aveyron, Midi-Pyrénées, France
  • Grube-Wittiannsgereth, Saalfeld, Thüringen, Germany
  • Glückauf mine, Bad Grund, Harz Mts, Sachsen, Germany
  • Glücksrad mine, Clausthal-Zellerfeld, Harz Mts, Sachsen, Germany
  • Herzog Friedrich mine, Reinerzau, Alpirsbach, Baden-Wuerttemberg, Germany
  • Gangzug Prinzbach, Kinzigtal, Baden-Wuerttemberg, Germany
  • Heimberg quarry, Möncheholz, Langelsheim, Harz Mts, Sachsen, Germany
  • Hechtsberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
  • Friedenstein mine, Ruhla, Bad Salzungen, Thüringen, Germany
  • Ludwig mine, Aldersbachtal, Hausach, Baden-Wuerttemberg, Germany
  • Geigeshalde / Falkenstein, Schramberg, Kinzigtal, Baden-Wuerttemberg, Germany
  • Johann mine, Wittichen, Baden-Wuerttemberg, Germany
  • Clara mine, Oberwolfach, Baden-Wuerttemberg, Germany
  • Floßberg mine, Bad Lauterberg, Harz Mts, Sachsen, Germany
  • Fohberg, Kaiserstuhl, Baden-Wuerttemberg, Germany
  • Himmelfürst mine, Freiberg, Sachsen, Germany
  • Hilfe Gottes mine, Wiemannsbucht, Bad Grund, Harz Mts, Sachsen, Germany
  • Johannis Segen mine, Kinzigtal, Baden-Wuerttemberg, Germany
  • Erzengel Gabriel mine, Einbachtal, Kinzigtal, Baden-Wuerttemberg, Germany
  • Huneberg quarry, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Hühn mine, Trusetal, Bad Salzungen, Thüringen, Germany
  • Daniel mine, Schneeberg, Sachsen, Germany
  • Karem quarry, Birresborn, Eifel, Germany
  • Kälbelberg, Baden-Baden, Baden-Wuerttemberg, Germany
  • Schmidt quarry, Ruhla, Bad Salzungen, Thüringen, Germany
  • Biseschacht am Iberg, Bad Grund, Harz Mts, Sachsen, Germany
  • Spitzenberg mines, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Bärensteinbruch quarry, Radautal, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Steinbissäge, Gremmelsbach, Kinzigtal, Baden-Wuerttemberg, Germany
  • St. Andreasberg, Hartz Mts, Niedersachsen, Germany
  • Artenberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
  • Silberbrünnle mine, Kinzigtal, Baden-Wuerttemberg, Germany
  • Arensberg quarry, Zilsdorf, Rheinland-Pfalz, Germany
  • Schweina-Glücksbrunn, Bad Liebenstein, Eisenach, Thüringen, Germany
  • Riekensglück, Schmalenbergsklippe, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Kafersteige mine, Pforzheim, Baden-Wuerttemberg, Germany
  • Kirchheimerstollen, Müllenbach, Baden-Baden, Baden-Wuerttemberg, Germany
  • Lautenthaler Hütte, Langelsheim, Harz Mts, Sachsen, Germany
  • Winterberg quarry, Bad Grund, Harz Mts, Sachsen, Germany
  • Uranlagerstatte Mullenbach, Baden-Baden, Germany
  • Anton mine, Heubachtal, Wittichen, Baden-Wuerttemberg, Germany
  • Wenzel mine, Oberwolfach, Baden-Wuerttemberg, Germany
  • Rappold mine, Schneeberg, Sachsen, Germany
  • Rammelsberg mine, Goslar, Harz Mts, Sachsen, Germany
  • Kamaréza Central mine, Laurion, Attica, Greece
  • Hilarion adit, Agios Konstandinos, Laurion, Attica, Greece
  • Chondro Vuono, Milos, Kikladhes, Southern Aegean, Greece
  • Fiskenaesset, Nuuk, Greenland
  • Fiskenaesset, Greenland
  • Ivigtut, Arsuk Fjord, Greenland
  • Winterswijk, Gelderland, Holland
  • Navan mine, Navan, Co. Meath, Ireland
  • Silvermines district, Co. Tipperary, Ireland
  • Vale of Avoca, Co. Wicklow, Ireland
  • Killiney, Co. Dublin, Ireland
  • Allihies mine, Castletown, Bearhaven, Co. Cork, Ireland
  • Snaefell Mine, Laxey, Snaefell, Isle of Man
  • North Bradda Mine, Port Erin, Bradda Head, Isle of Man
  • South Bradda Mine, Port Erin, Bradda Head, Isle of Man
  • Rio Marina, Elba, Tuscany, Italy
  • Carrara, Tuscany, Italy
  • Seravezza, Tuscany, Italy
  • Valdicastello Carducci, Lucca, Italy
  • Val Graveglia, Liguria, Italy
  • Govorrano mine, Tuscany, Italy
  • Elba, Tuscany, Italy
  • Baveno, Lago Maggiore, Piedmont, Italy
  • Monte Bardeneto-Monte Capra Prospect, Val Graveglia, Liguria, Italy
  • Mount Vesuvius, Naples, Campania, Italy
  • Monte Copello-Reppia Prospect, Val Graveglia, Liguria, Italy
  • Monte Bianco Copper Mine, Val Graveglia, Liguria, Italy
  • Kyonosawa, Mitomi-mura, Higashiyamanashi, Yamanashi Pref., Japan
  • Oppu Mine, Nishimeya, Nakatsugaru, Aomori Pref., Japan
  • Akschatau, Karaganda Oblast, Kazakhstan
  • Sarbay silver mine, Rudni, Kusteni Oblast, Kazakhstan
  • Chaidarkan, Alai, Kyrgyzstan
  • Chauvay, Alai, Kyrgyzstan
  • Allchar, Macedonia
  • Matehuala, San Luis Potosi, Mexico
  • Concepcion de Oro, Zacatecas, Mexico
  • Mina Bonanza, Concepcion del Oro, Zacatecas, Mexico
  • Mina Noche Buena, near Mazapil, Zacatecas, Mexico
  • Santa Eulalia, Chihuahua, Mexico
  • Santin mine, Santa Catarina, Cerro de las Fajas, Guanajuato, Mexico
  • Boleo, Santa Rosalia, Baja California, Mexico
  • Charcas, San Luis Potosi, Mexico
  • Santa Rita Mine, Zacatecas, Mexico
  • Moctezuma, Sonora, Mexico
  • Fresnillo, Zacatecas, Mexico
  • Guerrero, Mexico
  • Ahumada & Erupcion mines, Sierra de Los Lamentos, Chihuahua, Mexico
  • Batopilas district, Chihuahua, Mexico
  • Sombrereta mine, Zacatecas, Mexico
  • Mina Ojuela, Mapimi, Durango, Mexico
  • Chihuahua, Mexico
  • Naica, Chihuahua, Mexico
  • Auros, Otavi, Namibia
  • Tsumeb mine, Tsumeb, Otavi, Namibia
  • Alt Bobos mine, Otavi, Namibia
  • Kombat mine, Tsumeb, Otavi, Namibia
  • Khusib mine, Otavi, Namibia
  • Berg Aukas, Otavi, Namibia
  • Kongsberg, Buskerud, Norway
  • Evje-Ivedal, Iveland, Aust-Agder, Norway
  • Einerkilen, Flåt, Evje, Aust-Agder, Norway
  • Lake Gjerdingen, Nordmarka, Oslo, Norway
  • Buö, Arendal, Froland, Aust-Agder, Norway
  • Milpo mine, Pasco Dept., Peru
  • San Cristobal District, Yauli Province, Junín Dept., Peru
  • Castrovirreyana mine, near Lima, Peru
  • Castro Virreyana mine, near Lima, Peru
  • Casapalca Mine, Lima Dept., Peru
  • San Cristobel mine, Huancavelica Dept., Peru
  • La Libertad Mine, Quiruvilca, Santa de Chuco Province, Libertad Dept., Peru
  • Huanzala Mine, Bolognesi Procince, Ancash Dept., Peru
  • Huaron mine, Pasco Dept., Peru
  • Diamante mine, Cerro de Pasco, Alcides Carrion Province, Pasco Dept., Peru
  • Huanzala Mine, Huallanca District, Huánuco Dept., Peru
  • Uchucchacua District, Dos de mayo Prov., Huanuco Dept., Peru
  • Panasqueira mine, Panasqueira, Beira-Beixa, Portugal
  • Dal'negorsk, Primorskiy Kray, Russia
  • Berezovskoye deposit, Ekaterinberg, Sverdlovsk, Ural Mts., Russia
  • Mutnovskoe, Kamchatka, Russia
  • Dodo mine, Polar Urals, Tyumen Oblast, Russia
  • Ilmen-Vishnevye Mts Alkaline massif, Southern Urals, Russia
  • Slyudyanka complex, Lake Baikal region, Zabaikalye (Transbaikal), Siberia, Russia
  • Wilui River, Sakha Republic, Yakutia, Russia
  • Rodnikovoe, Kamchatka, Russia
  • Polar Urals, Tyumen Oblast, Russia
  • Puiva, Saranpual, Polar Urals, Russia
  • Kovdor massif and Khibina massif, Vuonnemi River, Kola Peninsula, Russia
  • Aldan Shield, Yakutiya, Siberia, Russia
  • Vuoriyarvi massif, North Karelia, Murmansk region, Kola Peninsula, Russia
  • Mt Koashva, Khibina alkaline complex, Kola Peninsula, Russia
  • Silver Glen, Clackmannanshire, Scotland
  • Coir Loch Kander, Braemar, Grampian, Scotland
  • Moonen Bay, Isle of Skye, Scotland
  • Coire Buidhe, Glen Creran, Argyll & Bute, Scotland
  • Muirshiel Mine, Renfrewshire Heights, Scotland
  • Trearne Quarry, Beith, Ayrshire, Scotland
  • Leadhills-Wanlockhead district, Strathclyde/Dumfries and Galloway, Scotland
  • Eas a Bradain, Luib, Isle of Skye, Scotland
  • Goat Quarry, Aberdour, Fife, Scotland
  • Orrock Quarry, Kirkcaldy, Fife, Scotland
  • Glencrieff Mine, Wanlockhead, Dumfries and Galloway, Scotland
  • Rhuba a'Mhill, Isle of Islay, Scotland
  • Pezinok Mine, Malé Karpaty Mts, Slovakia
  • Viborlat Mts, ??, Slovakia
  • Idria, Carniola, Slovenia
  • Mezica mine, Mezica, Slovenia
  • Wessels mine, Kalahari Mn field, Kuruman Hill, Cape Province, South Africa
  • Messina, Transvaal, South Africa
  • N'Chwaning II mine, Kalahari, Cape Province, South Africa
  • Palabora mine, Loolekop, Transvaal, South Africa
  • Victoria Mine, Navajú - n, La Rioja, Spain
  • Rio Tinto mines, Huelva, Spain
  • Logrono, Spain
  • Aguilar de Río Alhama, La Rioja, Spain
  • Ambasaguas, La Rioja, Spain
  • Horcajo mines, Ciudad Real, Spain
  • Armejun, Lagrono, Spain
  • Soria, Logrono, Spain
  • Långban mines, Bergslagen ore district, Värmland, Sweden
  • Pelle mine, Riddarhyttan, Västmanland, Sweden
  • Arvigo, Val Calanca, Graubünden, Switzerland
  • Lengenbach quarry, Binntal, Valais, Switzerland
  • Pen-Shan Ore Body, Chinkuahshih Mine, Jui-Fang Town, Taipei Co., Taiwan
  • Malasondo district, Tibet
  • Trabazon, Anatolia, Turkey
  • Nikitovka deposit, Donbass, Ukraine
  • Leviathan mine, Monitor-Mogul district, Alpine Co., California, USA
  • Lewis Mine, Buckfield Township, Oxford Co., Maine, USA
  • Lexington, Davidson Co., North Carolina, USA
  • Little Man mine, Carbon Co., Wyoming, USA
  • Liberty Copper/Dolly Hyde Copper Mines, Libertytown, Fredrick Co., Maryland, USA
  • Jackson Canyon, Humbolt Range, Pershing Co., Nevada, USA
  • Lillian Mining Co., Printerboy Hill, Leadville, Lake Co., Colorado, USA
  • Lime Crest Quarry, Sparta, Sussex Co., New Jersey, USA
  • Lime Quarry, Bolton, Worcester Co., Massachusetts, USA
  • Levant Antimony mine, Levant, Penobscot Co., Maine, USA
  • Leonard Mine etc, Butte, Silver Bow Co., Montana, USA
  • Loudville Lead Mine, Loudville, Hampshire Co., Massachusetts, USA
  • Lower Nevel Quarry pit, Newry Township, Oxford Co., Maine, USA
  • Lubec Lead mine, Lubec, Washington Co., Maine, USA
  • Lutz Quarry, Oshkosh, Wisconsin, USA
  • Lynch quarry, Berkeley, Cumberland, Providence Co., Rhode Island, USA
  • Randville, Dickinson Co., Michigan, USA
  • Longfellow Mine, San Juan CouTnuty, Colorado, USA
  • Libson Valley Area, San Juan Co., Colorado, USA
  • Leona mine, Leona Heights, Oakland, Alameda Co., California, USA
  • Limeburner prospect, Penobscot, Hancock Co., Maine, USA
  • Lincoln, Providence Co., Rhode Island, USA
  • Hansen Creek, King Co., Washington, USA
  • Harriman prospect, Union, Knox Co., Maine, USA
  • Harrington Mine, Carmel, Penobscot Co., Maine, USA
  • Harris Quarry, Lincoln, Providence Co., Rhode Island, USA
  • Hawthorne, Mineral Co., Nevada, USA
  • Haystack Range pegmatite district, Goshen Co., Wyoming, USA
  • Halls Gap, Lincoln Co., Kentucky, USA
  • Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
  • Grants Mills, Cumberland, Providence Co., Rhode Island, USA
  • Hamme Tungsten Mine, Vance Co., North Carolina, USA
  • Graves Mt., Lincoln Co., Georgia, USA
  • Liberty Bell and Washington Pass, Okanogan Co., Washington, USA
  • Hanover Quarry, Hanover, Adams Co., Pennsylvania, USA
  • Jamestown mine, Tuolumne Co., California, USA
  • Great Southern Mine, Wickenberg, Yavapai Co., Arizona, USA
  • Green Mountain Mine, Prince of Wales Island, Alaska, USA
  • Greenlaw mine, Auburn, Androscoggin Co., Maine, USA
  • Gypsy Queen Mine, Oreana, Pershing Co., Nevada, USA
  • Hall Quarry, Gastonbury, Connecticut, USA
  • Gold Hill District, Jackson Co., Oregon, USA
  • Lisbon, Grafton Co., New Hampshire, USA
  • Keystone Quarry, Cornog, Chester Co., Pennsylvania, USA
  • LCA mine, Bessermer City, Gaston Co., North Carolina, USA
  • Lead Hill Mine, Ticonderoga, Essex Co., New York, USA
  • Jackson/Superior Mines etc, Negaunee, Marquette Co., Michigan, USA
  • Knob Hill Mine, Republic Mining District, Ferry Co., Washington, USA
  • Josephine Creek, Galice District, Josephine Co., Oregon, USA
  • Madison Lead mine, Madison, Carroll Co., New Hampshire, USA
  • Jarbridge, Elko Co., Nevada, USA
  • Jeffrey Quarry, North Little Rock, Pulaski Co., Arkansas, USA
  • Lawrence mine, Hampden, Penobscot Co., Maine, USA
  • Lamartina District, Clear Creek Co., Colorado, USA
  • Lake Buchanan, Clear Creek, Burnet Co., Texas, USA
  • Keystone-Douglas Creek gold-copper district, Albany Co., Wyoming, USA
  • Kingsbridge, Bronx Co., New York, USA
  • Kirk Mine, Central City, Gilpin Co., Colorado, USA
  • Kirwin copper district, Park Co., Wyoming, USA
  • Kitty Mac Mine, San Juan Co., Colorado, USA
  • Ledge Ridge locality, Parmachenee, Oxford Co., Maine, USA
  • Kokomo Area mines, Ten Mile District, Summit Co., Colorado, USA
  • Keokuk, Lee Co., Iowa, USA
  • Jensen Quarry, Riverside Co., California, USA
  • John Reed Mine, Alicante District, Lake Co., Colorado, USA
  • Lord Hill mine, Stoneham, Oxford Co., Maine, USA
  • Lebanon-Acton mine, Lebanon, York Co., Maine, USA
  • Little May mine, Lyman, Grafton Co., New Hampshire, USA
  • Little Ossipee River mine, Newfield, York Co., Maine, USA
  • Lockport Quarry, Lockport, Niagara Co., New York, USA
  • Lone Pine mine, Wilcox distr., Catron Co., New Mexico, USA
  • Lone Star mine, Woodstock, Oxford Co., Maine, USA
  • Little Deer Hill prospect, Stow, Oxford Co., Maine, USA
  • Jones mine, Brooksville, Hancock Co., Maine, USA
  • Lee Lime quarry, Lee, Berkshire Co., Massachusetts, USA
  • Katahdin Pyrrhotite Locality, Katahdin Iron Works, Piscataquis Co., Maine, USA
  • Johnston, Providence, Rhode Island, USA
  • Keyes Mica mines, Orange, Grafton Co., New Hampshire, USA
  • Joplin, Jasper Co., Missouri, USA
  • Key West mine, Nye Co., Nevada, USA
  • Josephine Horizon, Metaline District, Washington, USA
  • Julia Fisk mine, Leadville, Lake Co., Colorado, USA
  • Jumbo Copper mine, Prince of Wales Island, Alaska, USA
  • Kasaan Peninsula, Ketchikan, Alaska, USA
  • Loon Lake, Stevens Co., Washington, USA
  • Gold Mine, Great Falls, Baltimore Co., Maryland, USA
  • Hull & Martin Mines etc, Smyma, York Co., South Carolina, USA
  • Ore Hill mine, Warren, Grafton Co., New Hampshire, USA
  • Paddock Lead mine, Lyman, Grafton Co., New Hampshire, USA
  • Paoli Area, Garvin Co., Oklahoma, USA
  • Park City & Alta, Clayton Peak, Utah, USA
  • Park City, Summit Co., Utah, USA
  • Parke Co., Indiana, USA
  • Parker Mountain Mountain Mine, Center Strafford, Coos Co., New Hampshire, USA
  • Ozark-Mahoning Mine, Cave-in-rock & Rosiclare, Hardin Co., Illinois, USA
  • Pack Rat Mine, Carbon Co., Montana, USA
  • Ore Knob Copper Mine, Ashe, Ashe Co., North Carolina, USA
  • Oxford Stone Company, Bridgeville, Cumberland Co., New Jersey, USA
  • Humbolt Range, Mill City, Pershing Co., Nevada, USA
  • Hodge/Columbia/Brown/Old Jim Mines etc, Ohio River Area, Crittenden Co., Kentucky, USA
  • Paddock Copper mine, Lyman, Grafton Co., New Hampshire, USA
  • Mackay, Custer Co., Idaho, USA
  • Ortiz Mine, Old Placers district, Santa Fe Co., New Mexico, USA
  • Ouray District, Ouray Co., Colorado, USA
  • Owingsville, Bath Co., Kentucky, USA
  • Oxford Silver mine, Milton, Oxford Co., Maine, USA
  • Ohtonens mine, Greenwood, Oxford Co., Maine, USA
  • Newcomb, Essex Co., New York, USA
  • Opp Mine, Jackson, Jackson Co., Oregon, USA
  • Orchard Quarry/Bennett farm, Buckfield Township, Oxford Co., Maine, USA
  • Oatman, Mohave Co., Arizona, USA
  • Purgatory Gulch prospect, Carbon Co., Wyoming, USA
  • Patagonia mining district, Santa Cruz Co., Arizona, USA
  • Poker Hill, Ashton, Cumberland, Providence Co., Rhode Island, USA
  • Porter Lead mine, Porter, Oxford Co., Maine, USA
  • Portland & Strickland Quarries, Portland, Connecticut, USA
  • Old Strontian Mine, Schoharie, Schoharie Co., New York, USA
  • Old Guard Mine, Tombstone, Cochise Co., Arizona, USA
  • Okimah, Okfuskee Co., Oklahoma, USA
  • Newtown, Fairfield Co., Connecticut, USA
  • North Castine mine, Castine, Hancock Co., Maine, USA
  • Nubble mine, Greenwood, Oxford Co., Maine, USA
  • Nugget gold district, Fremont Co., Wyoming, USA
  • Oak Grove Fork, Clackamas River, Clackamas Co., Oregon, USA
  • Organ Mts, Dona Ana Co., New Mexico, USA
  • Ochee Springs, Providence Co., Rhode Island, USA
  • Pattuck mine, Alexandria, Grafton Co., New Hampshire, USA
  • Portland mine, Acton, York Co., Maine, USA
  • Howe Hill Nickel mine, Rumford, Oxford Co., Maine, USA
  • Golden Eagle-Nature's Mint mine, Carbon Co., Wyoming, USA
  • Goodhope mine, South Pass-Atlantic City gold district, Fremont Co., Wyoming, USA
  • Irish Creek Tin Mines, Vesuvius, Rockbridge Co., Virginia, USA
  • Heikkinen mine, Greenwood, Oxford Co., Maine, USA
  • Hypotheck Mine, Kingston, Shoshone Co., Idaho, USA
  • Ibex Mine, Leadville District, Lake Co., Colorado, USA
  • Idaho Giant Mine, Shoshone Co., Idaho, USA
  • Idarado, San Miguel Co., Colorado, USA
  • Indian Lake, Essexty, New York, USA
  • Granite Mt Quarry #1, Pulaski Co., Arkansas, USA
  • Grange Ore Body, ZCA West Pierrepont Mine, West Pierrepont, St. Lawrence Co., New York, USA
  • Grandview mine, Grand Canyon, Coconino Co., Arizona, USA
  • Golden Fleece mine, near Lake City, Hinsdale Co., Colorado, USA
  • Good Hope Mine, Vulcan District, Gunnison Co., Colorado, USA
  • Goodall/Webster, Sanford, York Co., Maine, USA
  • Great South Mine, Randolph Co., Alabama, USA
  • Gordonsville zinc Mines, Tennessee, USA
  • Heroult, Shasta Co., California, USA
  • Grace Walker Mine etc, Picher/Miami, Ottawa Co., Oklahoma, USA
  • Grand Reef mine, Laurel Canyon, Aravaipa mining distr., Graham Co., Arizona, USA
  • Hutchins Consolidated Gold Mining Co., Crook Co., Wyoming, USA
  • Interstate 295 roadcut, Cranston, Providence Co., Rhode Island, USA
  • Highland mine, Penobscot, Hancock Co., Maine, USA
  • Hill Top Mine, Cochise Co., Arizona, USA
  • Hillsboro, OrangeCo., North Carolina, USA
  • Hilltop mine, Cochise Co., Arizona, USA
  • Hyde Park, Lamoille Co., Vermont, USA
  • Homestake Mine etc, Ambrosia Lake District, McKinley Co., New Mexico, USA
  • Hercules mine, Penobscot, Hancock Co., Maine, USA
  • Hoosier Stone Quarry, Salem, Lawrence Co., Indiana, USA
  • Hiddenite, Alexander Co., North Carolina, USA
  • Magdalena district, Socorro Co., New Mexico, USA
  • Homestake Mine, Creede, MineralCo., Colorado, USA
  • Hunting Hill quarry, Rockville, Montgomery Co., Maryland, USA
  • Iron Blossom Mine, Tintic District, Juab Co., Utah, USA
  • Iron Hill, Cebolla Creek area, Powderhorn, Gunnison Co., Colorado, USA
  • Iron Mountain Mine, Iron Mountain, Missouri, USA
  • Iron Mt. mines, Bartlett, Carroll Co., New Hampshire, USA
  • Iron Ridge Mines, Marion Co., Tennessee, USA
  • Italian Mt. Area, Aspen, Gunnison Co., Colorado, USA
  • Indian Mountain, Cherokee Co., Alabama, USA
  • Howard-Montgomery quarry, Howard Co., Maryland, USA
  • Tungsten Mine, Trumbull, Fairfield Co., Connecticut, USA
  • Tilly Foster Mine, Brewster, Putnam Co., New York, USA
  • Tintic Standard mine, Dividend, Utah Co., Utah, USA
  • Tuscon Mine, Leadville, Lake Co., Colorado, USA
  • "Towle Gold"" mine, Winthrop, Kennebec Co., Maine, USA"
  • Songo Pond mine, Albany, Oxford Co., Maine, USA
  • Trap Hill, Wilkes Co., North Carolina, USA
  • Treadwell Mine, Douglas Island opposite Junea City, SE Juneau Area, Alaska, USA
  • Trotter mine, Franklin Furnace, Sussex Co., New Jersey, USA
  • Tilcon Capaldi quarry, Acushnet, Bristol Co., Massachusetts, USA
  • Tiger Bill Quarries, Greenwood Township, Oxford Co., Maine, USA
  • Thomasville, Pennsylvania, USA
  • Waisanen mine, Greenwood, Oxford Co., Maine, USA
  • Walker Valley, Skagit Co., Washington, USA
  • Walker vein, Caldwell Stone Company Quarry, Danville, Boyle Co., Kentucky, USA
  • Wallace Stone Plant, Bayport, Huron Co., Michigan, USA
  • Wallace/Dixon Eutis/Southern Mines etc, Kings Creek, Cherokee County, South Carolina, USA
  • Urad Mine, Berthoud Falls, Clear Creek Co., Colorado, USA
  • Tramway mine, Butte, Silver Bow Co., Montana, USA
  • Thomaston dam, Thomaston, Litchfield Co., Connecticut, USA
  • Truman Patten mine, Alexandria, Grafton Co., New Hampshire, USA
  • Tryon Mt. mines, Pownal, Cumberland Co., Maine, USA
  • Rowe, Franklin Co., Massachusetts, USA
  • Rowland Area, Lincoln Co., Kentucky, USA
  • Roxbury Iron mine, Roxbury, Litchfield Co., Connecticut, USA
  • Rumford Falls locality, Rumford, Oxford Co., Maine, USA
  • Rump Pond Copper prospect, Parmachenee, Oxford Co., Maine, USA
  • Rush, Marion Co., Arkansas, USA
  • Ross/Cameron Mines etc, Gaffney, Cherokee Co., South Carolina, USA
  • Redmond Prospect, Haywood Co., North Carolina, USA
  • Road Cut, Cherry Valley, Oswego Co., New York, USA
  • Rossie lead mines, St. Lawrence Co., New York, USA
  • Road Gulch, Fremont Co., Colorado, USA
  • Tombstone, Cochise Co., Arizona, USA
  • Round Mountain, Nye Co., Nevada, USA
  • Specialty Minerals quarry, Adams, Berkshire Co., Massachusetts, USA
  • Robinson mine, Sumner, Oxford Co., Maine, USA
  • Rockport Silver mine, Rockport, Knox Co., Maine, USA
  • Rockport, Cape Ann, Essex Co., Massachusetts, USA
  • Roncari quarry, East Granby, Hartford Co., Connecticut, USA
  • Rosiclaire, Hardin Co., Illinois, USA
  • Rawley Mine, Thebna, Maricopa Co., Arizona, USA
  • Val Verde (tunnel), California, USA
  • Susanville, Grant Co., Oregon, USA
  • Tamminen mine, Greenwood, Oxford Co., Maine, USA
  • Tanner Bay, Loveland Mtn Area, Park Co., Colorado, USA
  • Taunton Copper Company Coal mines, Portsmouth, Newport Co., Rhode Island, USA
  • Sparta, Randolph Co., Illinois, USA
  • Sunnyside mine, Silverton Mining District, Howardsville, San Juan Co., Colorado, USA
  • Steamboat Springs, Washoe Co., Nevada, USA
  • Warren Farm, Alexander Co., North Carolina, USA
  • Spruce Claim, King Co., Washington, USA
  • Sweetwater Mine, Ellington, Reynolds Co., Missouri, USA
  • Sweet Home Mine, Alma District, Park Co., Colorado, USA
  • Stilaguamish, Snomish Co. Co., Washington, USA
  • Stockbridge Valley Brown Iron Ore District, Berkshire Co., Massachusetts, USA
  • Stone Mine, Leadville District, Lake Co., Colorado, USA
  • Stoney Point, Sharpes Township, Alexander Co., North Carolina, USA
  • Sugar Grove, Pendelton Co., West Virginia, USA
  • Sumpter, Baker Co., Oregon, USA
  • Sunlight copper district, Park Co., Wyoming, USA
  • The Geysers, Sonoma Co., California, USA
  • Surl, Person Co., North Carolina, USA
  • Spruce Peak deposit, King Co., Washington, USA
  • Standpipe Hill Quarries, Topsham Township, Sagadahoc Co., Maine, USA
  • Starrett mines, Warren, Knox Co., Maine, USA
  • Vulcan/Good Hope/Mammouth Chimney Mines/etc, Vulcan District, Gunnison Co., Colorado, USA
  • Terlingua, Brewster Co., Texas, USA
  • Twin Buttes, Pima Co., Arizona, USA
  • Tybo, Utah, USA
  • Union Copper/Pioneers/Cosley's/McMalzin's etc, Area mines, Cabarrus Co., North Carolina, USA
  • Unionville, Chester Co., Pennsylvania, USA
  • United Verde Copper Co., Jerome, Yavapai Co., Arizona, USA
  • The-Hole-In-The-Ground mine, Auburn, Androscoggin Co., Maine, USA
  • Stewart Mine, Butte, Silver Bow Co., Montana, USA
  • Stevenson Bennett Mine etc, Organon Area, Dona Ana Co., New Mexico, USA
  • Stanley Mine, Idaho Springs District, Clear Creek Co., Colorado, USA
  • Staples Road Manganese bed, Cumberland, Providence Co., Rhode Island, USA
  • Stinkingwater copper district, Park Co., Wyoming, USA
  • State Route 30 locality, Long Lake, Hamilton Co., New York, USA
  • Stillwater complex, Benbow Area, Stillwater Co., Montana, USA
  • Stephenson-Bennett mine, Organ District, Dona Ana Co., New Mexico, USA
  • Sterling Hill and Franklin Furnace, Sussex Co., New Jersey, USA
  • Sterling Mine, Antwerp, St.Lawrence Co., New York, USA
  • Tuscarora mine, near Randolph, Crawford Mts, Rich Co., Utah, USA
  • Rawley Tunnel Mine, Saguache Co., Colorado, USA
  • Shellsburg Area mines, Beuton, Lafayette Co., Wisconsin, USA
  • Willie Heikkienen Ledge prospect, Greenwood, Oxford Co., Maine, USA
  • Wrangell Island, Alaska, USA
  • Yaquina Head Quarry, Agate Beach, Lincon Co., Oregon, USA
  • York County mine, Lebanon, York Co., Maine, USA
  • Yuhas No. 1 mine, Acworth, Sullivan Co., New Hampshire, USA
  • Yuhas No. 2 mine, Acworth, Sullivan Co., New Hampshire, USA
  • Zaca (Advance/Colorado/Tarshish) mine, Colorado Hill, Monitor-Mogul district, Alpine Co., California, USA
  • Wood River District, Hailey, Blaine Co., Idaho, USA
  • Woodstock mine, Woodstock, Oxford Co., Maine, USA
  • Willis Mountain Mine, Willis Mountain Area (near Farmville), Buckingham Co., Virginia, USA
  • Wood Copper Mine, micaville, Cleburne Co., Alabama, USA
  • Sherman Mine, Leadville, Lake Co., Colorado, USA
  • Scotty Mine, Newry Township, Oxford Co., Maine, USA
  • War Bonnet copper district, Converse Co., Wyoming, USA
  • Woodville, Sandusky Co., Ohio, USA
  • Winslow Tin mine, Winslow, Kennebec Co., Maine, USA
  • Winthrop Copperas mine, Winthrop, Kennebec Co., Maine, USA
  • Wolfe's Neck locality, Freeport, Cumberland Co., Maine, USA
  • Wolfton Mine, Leadville District, Lake Co., Colorado, USA
  • White Mt. Silver & Lead mine, Shelburne, Coos Co., New Hampshire, USA
  • Washington Camp District, Santa Cruz Co., Arizona, USA
  • Whitehall, Jefferson Co., Montana, USA
  • Willard mine, Lovelock, Pershing Co., Nevada, USA
  • Wheeler mine, Gilead, Oxford Co., Maine, USA
  • Zaca Mine, Monitor-Mogal District, Alpine Co., California, USA
  • Quick Silver Mine etc, Organ Mts. Area, Dona Ana Co., New Mexico, USA
  • Zinc Mines, Timberville, Virginia, USA
  • Zuni mine, Silverton Mining District, Howardsville, San Juan Co., Colorado, USA
  • ZCA Mine, Pierrepont, St. Lawrence Co., New York, USA
  • Whitehall mine, Rumford, Oxford Co., Maine, USA
  • White Raven Mine, Boulder Co., Colorado, USA
  • White Pine mine, Ontonagan Co., Michigan, USA
  • Werley Mine, Werley, Grant Co., Wisconsin, USA
  • West Creek, Brooklyn Hts, Ohio, USA
  • Westerly, Washington Co., Rhode Island, USA
  • Westmorelan, Cheshire Co., New Hampshire, USA
  • Wheatfield Iron Mine, Wheatfield/Sinking Spring, Berks Co., Pennsylvania, USA
  • Willow Creek Area, Pecos, San Miguel Co., New Mexico, USA
  • White Caps/Outlaw Mines etc, Manhattan, Nye Co., Nevada, USA
  • Zinc Hill Mine, Darwin Area, Inyo Co., California, USA
  • La Motte/Missouri Cobalt Mine, Fredrick, Madison Co., Missouri, USA
  • Sheahan Quarry etc, Graniteville, Iron Co., Missouri, USA
  • Ray Mica Mine, Yancey Co., North Carolina, USA
  • Red Hill quarry, near Rumford, Maine, USA
  • Smuggler Vein, Smuggler Union Consolidated mine, Marshall Basin, Telluride District, San Miguel Co., Colorado, USA
  • Ruth/Consolidated/Pit/Betty Joe Mines, Ely, White Pine Co., Nevada, USA
  • Silver Crown copper district, Laramie Co., Wyoming, USA
  • Silver Drift mine, Hampden, Penobscot Co., Maine, USA
  • Silver Hill, Davidson Co., North Carolina, USA
  • Silver King Mine, Superior, Pinal Co., Arizona, USA
  • Silver Mine, below Iron Mt., Madison Co., Missouri, USA
  • Riverside Silver mine, Rockport, Knox Co., Maine, USA
  • Ringwood Iron Mine, Ringwood, Passaic Co., New Jersey, USA
  • Rico, Colorado, USA
  • Ray mine, Pina Co., Arizona, USA
  • Ray Olivine/Ray mica/Doe Hill Mines etc, Burnsville, Yancey Co., North Carolina, USA
  • Red Cloud Mines, Gallinas Mts., Socorro Co., New Mexico, USA
  • Roaring Spring Quarry, Canoe Creek Area, Sinking Valley, Blair Co., Pennsylvania, USA
  • Redcliff Area, Eagle Co., Colorado, USA
  • Sacremento Mines, Mercur, Tooele Co., Utah, USA
  • "Redstone Red Granite"" quarry, Conway, Carroll Co., New Hampshire, USA"
  • Rico Argentite mine, Rico district, Dolores Co., Colorado, USA
  • Siderite Mine, Roxbury Station, Litchfield Co., Connecticut, USA
  • Smuggler Mine, Aspen Mtn Area, Pitkin Co., Colorado, USA
  • San Pedro Mine, Hiriart Hill, San Diego Co., California, USA
  • Santa Rita Pit, Grant Co., New Mexico, USA
  • Saratoga Mine, Central City District, Gilpin Co., Colorado, USA
  • Schwartzwalder Mine, Golden Area, Jefferson Co., Colorado, USA
  • Silver Bell mine, Gleeson, Cochise Co., Arizona, USA
  • Scrub Oaks Mine, Dover, Morris Co., New Jersey, USA
  • Rutherford Mines, Amelia Court House, Virginia, USA
  • Seminoe Mts gold district, Carbon Co., Wyoming, USA
  • Salmon River Mining District, Riggins, Idaho, USA
  • Warren Nickel prospect, Warren, Knox Co., Maine, USA
  • Sedalia Copper Mine, Sedalia, Chaffee Co., Colorado, USA
  • Showalter Quarry/Blueball Stone Co., East Earle Township/Lancaster, Lancaster Co., Pennsylvania, USA
  • Snake River/Peru, Montezuma, Summit Co., Colorado, USA
  • Sneech Pond Copper mine, Cumberland, Providence Co., Rhode Island, USA
  • Snow/Sackett/Marcia/Old/Melvin/Wright Mines etc, Chester, Hampden Co., Massachusetts, USA
  • Snowbird mine, South Pass-Atlantic City gold district, Fremont Co., Wyoming, USA
  • Snowbird/Mary Ellen Mine, Atlantic City District, Fremont Co., Wyoming, USA
  • Socrates mine, Sonoma Co., California, USA
  • Silver Wave mine, Acton, York Co., Maine, USA
  • Shaft #10, Quabbin Aquaduct, Hardwick, Worcester Co., Massachusetts, USA
  • Portland/Vindicator/Golden Cycle etc, Cripple Creek, El Paso Co., Colorado, USA
  • Fenners Ledge, Cranston, Providence Co., Rhode Island, USA
  • Elmrow Farm Silver mine, Parsonsfield, York Co., Maine, USA
  • ElPaso/Ajax Mines etc, Cripple Creek District, Teller Co., Colorado, USA
  • Emerson mine, Castine, Hancock Co., Maine, USA
  • Emma mine, Butte, Silver Bow Co., Montana, USA
  • Encampment copper district, Carbon Co., Wyoming, USA
  • Erie Canal excavations, Lockport and Rochester, Monroe Co., New York, USA
  • Erie Railroad Cut (Bergen Archways), Jersey City, Hudson Co., New Jersey, USA
  • Germania Tungsten mine, Deer Trail Mining distr., Stevens Co., Washington, USA
  • Elk Knob, Boone, Watauga Co., North Carolina, USA
  • Eldorado Mine, Indio, Riverside Co., California, USA
  • El Portal Area, Mariposa Co., California, USA
  • Fernando Mine/etc, Darwin District, Inyo Co., California, USA
  • Fisher Hill Mine, Greensboro, Guilford Co., North Carolina, USA
  • Flambeau mine, Ladysmith, Rusk Co., Wisconsin, USA
  • Fairfax Quarry, Centreville, Fairfax Co., Virginia, USA
  • Elmwood mine, Carthage, Smith Co., Tennessee, USA
  • Cherryville, Gastony, North Carolina, USA
  • Edwards, Gouverneur, St. Lawrence Co., New York, USA
  • Einstein Silver Mine, Madison Co., Missouri, USA
  • Gabbs District, Nye Co., Nevada, USA
  • Galax, Carroll Co., Virginia, USA
  • Getchell Mine, Golconda, Humbolt Co., Nevada, USA
  • Gibbonsville Area, Lehmi Co., Idaho, USA
  • Gilman district, Eagle Co., Colorado, USA
  • Glassmere, Alleghany Co., Pennsylvania, USA
  • Glendale Quarry, Haverford Township, Delaware Co., Pennsylvania, USA
  • Glendon, Moore Co., North Carolina, USA
  • Glove Mine, San Rita Mts., Santa Cruz Co., Arizona, USA
  • General Electric mines, Buckfield, Oxford Co., Maine, USA
  • French Mt./Wardwell Quarry, Albany Township, Oxford Co., Maine, USA
  • General, West Virginia, USA
  • General Area, Picher/Commerce/Quapaw/Miami/Peoria, Ottowa Co., Oklahoma, USA
  • Galena General Area, Jo Davies Co., Illinois, USA
  • Galena, Cherokee Co., Kansas, USA
  • Galena/Baxter Springs/Lawton, Cherokee Co., Kansas, USA
  • Gap Nickel Mine, Bart Township, Lancaster Co., Pennsylvania, USA
  • Garrett prospect, Albany Co., Wyoming, USA
  • Gas Hills uranium district, Fremont Co., Wyoming, USA
  • Gem mine, Gem Park complex, Fremont Co., Colorado, USA
  • General Area, Jasper & Newton counties, Missouri, USA
  • Fowler mine, Hampden, Penobscot Co., Maine, USA
  • Fat Jack mine, Lane Mt., Yavapai Co., Arizona, USA
  • Alice Glory Hole, Alice, Clear Creek Co., Colorado, USA
  • Ben Franklin Mine, West Pikeland Township/Oppermans Corner, Chester Co., Pennsylvania, USA
  • Benitoite/Dallas/Victor/New Idria Mines, New Idria Mining District, San Benito & Fresno Counties, California, USA
  • Bennett Quarry, Buckfield Township, Oxford Co., Maine, USA
  • Benson Mines, Newton Falls/Star Lake, St.Lawrence Co., New York, USA
  • Chicago Mine, Igo, Shasta Co., California, USA
  • Bershire Talc Company mines, Hinsdale, Berkshire Co., Massachusetts, USA
  • Alma and Leona mines, Leona Heights, Oakland, Alameda Co., California, USA
  • Alma mine, Leona Heights, Oakland, Alameda Co., California, USA
  • Bellows Falls, Windham Co., Vermont, USA
  • Bell Pit, Newry, Oxford Co., Maine, USA
  • Bald Mt. Area mines, Lead, Lawrence Co., South Dakota, USA
  • A.C. Perham mine, West Paris, Oxford Co., Maine, USA
  • Alice mine, Alice district, Clear Creek Co., Colorado, USA
  • Barringer Hill, Blufton, Llano Co., Texas, USA
  • Bayer-Mingolla Quarry, Ashland, Norfolk Co., Massachusetts, USA
  • Beacon Pole Hill/Iron Mine Hill/Diamond Hill etc, Cumberland Area, Providence Co., Rhode Island, USA
  • "Bean Mt. Gold"" mine, Rumford, Oxford Co., Maine, USA"
  • Beatson Mine, Prince Willuam Sound, Alaska, USA
  • Balmat-Edwards District, Governor, St.Lawrence Co., New York, USA
  • Altoona, Blair Co., Pennsylvania, USA
  • American Eagle Mine, Elk Mts. Area, Gunnison Co., Colorado, USA
  • Baggs, Carbon Co., Wyoming, USA
  • Baggs-Poison Basin uranium district, Carbon Co., Wyoming, USA
  • Edenville, Orange Co., New York, USA
  • Esterbrook copper district, Albany Co., Wyoming, USA
  • Estes mine, Baldwin, Cumberland Co., Maine, USA
  • Etna, Alleghany Co., Pennsylvania, USA
  • Evergreen mine, near Apex, Gilpin Co., Colorado, USA
  • F. Perham prospect, Rumford, Oxford Co., Maine, USA
  • Bagdad Copper mine, 7-U-7 Ranch, Hillside, Yavapai Co., Arizona, USA
  • Bachelor Mine, Creede, Mineral Co., Colorado, USA
  • Atwood mine, Lisbon, Grafton Co., New Hampshire, USA
  • American mine, Bingham Canyon, Salt Lake Co., Utah, USA
  • Amethyst lode, Creede, Mineral Co., Colorado, USA
  • Amity, Orange Co., New York, USA
  • Androscoggin Tourmaline Prospect, Auburn, Androscoggin Co., Maine, USA
  • Bare Hills, Baltimore, Baltimore Co., Maryland, USA
  • Arlington Quarry etc, Leesburg, Loudoun Co., Virginia, USA
  • Atlantic City iron mine, Fremont Co., Wyoming, USA
  • Atlantic/Blue Hill/Oven/Douglas/Granger etc, Blue Hill, Hancock Co., Maine, USA
  • Faircloth/Dean/Fairfield/Twin Chimney Mines, Munday's Landing, Mercer Co., Kentucky, USA
  • Ecton Mine etc, Perkiomenville Area, Montgomery Co., Pennsylvania, USA
  • Cofer District, Mineral, Virginia, USA
  • East Colusa Mine, Butte, Silver Bow Co., Montana, USA
  • East Greenwich, Kent Co., Rhode Island, USA
  • Darwin Antimony mine, Inyo Co., California, USA
  • East Woodstock Silver mine, Woodstock, Oxford Co., Maine, USA
  • Dubuque Area, Dubuque Co., Iowa, USA
  • Eastman Hill Tin prospects, Jackson, Carroll Co., New Hampshire, USA
  • Eastman mine, Stow, Oxford Co., Maine, USA
  • Easton Area, North Hampton Co., Pennsylvania, USA
  • Eagle Mountain Mine Area, Riverside Co., California, USA
  • Eagle Mine, Bonanza mining district, Saguache Co., Colorado, USA
  • Durfee Hill Gold mine, Glocester, Providence Co., Rhode Island, USA
  • Cole mine, Stoneham, Oxford Co., Maine, USA
  • Cole shaft, Bisbee, Cochise Co., Arizona, USA
  • Colorado Mine, Morenci District, Greenlee Co., Arizona, USA
  • Columbus, Cherokee Co., Kansas, USA
  • Comstock Lode, Virginia City, Storey Co., Nevada, USA
  • Dudley's Ledge, Buchfield Township, Oxford Co., Maine, USA
  • Duff quarry, Huntsville, Logan Co., Ohio, USA
  • Dunton Quarry etc, Newry Township, Oxford Co., Maine, USA
  • Eberle Mine, Cobb, Iowa Co., Wisconsin, USA
  • East Oakland, Alameda Co., California, USA
  • Denny Mountain Area, King Co., Washington, USA
  • Ducktown mine, Polk Co., Tennessee, USA
  • Diamond Hill/Sneech Pond Copper Mines, Cumberland, Rhode Island, USA
  • Dillsburg, York Co., Pennsylvania, USA
  • Dirigo mine, Acton, York Co., Maine, USA
  • Dodge mine, Lyman, Grafton Co., New Hampshire, USA
  • Dome Rock Mts. Area, La Paz, Yuma Co., Arizona, USA
  • Bergendahl/Davis/Pease/Piper Hill/Tin, Newfield, York Co., Maine, USA
  • Delmar, Nevada, USA
  • Deering-Acton mine, Acton, York Co., Maine, USA
  • Deer Isle mine, Deer Isle, Hancock Co., Maine, USA
  • Dexter quarry, Lincoln, Providence Co., Rhode Island, USA
  • Davis pyrite mine, Rowe, Franklin Co., Massachusetts, USA
  • Davis Silver mine, Hermon, Penobscot Co., Maine, USA
  • De Kalb, St. Lawrence Co., New York, USA
  • De Lamar, Owyhee Co., Idaho, USA
  • Dead Indian Hill, Park Co., Wyoming, USA
  • Deer Hill mine, Stow, Oxford Co., Maine, USA
  • Deer Hill, Stowe Township, Oxford Co., Maine, USA
  • Denton mine, Harris Creek District, Hardin Co., Illinois, USA
  • Davis Mica mine, West Bath, Sagadahoc Co., Maine, USA
  • Flux Mine, Harshaw District, Patagonia Mountains, Santa Cruz Co., Arizona, USA
  • Copper River District, Kennecott, Alaska, USA
  • Darwin, Inyo Co., California, USA
  • Conklin quarry, Lincoln, Providence Co., Rhode Island, USA
  • Consolidated Feldspar mines, Georgetown, Sagadahoc Co., Maine, USA
  • Consolidated Hampden mine, Hampden, Penobscot Co., Maine, USA
  • Copper Hill Area mines, Ducktown, Polk Co., Tennessee, USA
  • Copper Mountain Area, Sulzer/Prince of Wales Island, Alaska, USA
  • Copper Mt pegmatite district, Fremont Co., Wyoming, USA
  • French Creek Mines, Knauertown, Chester Co., Pennsylvania, USA
  • Freidensville, Lehigh Co., Pennsylvania, USA
  • Freeport Granite quarry, Freeport, Cumberland Co., Maine, USA
  • Foote Spodumene Mine, Kings Mountain, Cleveland Co., North Carolina, USA
  • Forest City mine, Acton, York Co., Maine, USA
  • Forge Hill iron mines, West Hawley, Franklin Co., Massachusetts, USA
  • Forrest Queen Mine, Irwin District, Gunnison Co., Colorado, USA
  • Fort Littleton, Fulton Co., Pennsylvania, USA
  • G.E. Smith mine, Newport, Sullivan Co., New Hampshire, USA
  • Franconia Iron mine, Sugar Hill, Grafton Co., New Hampshire, USA
  • Frankfort, Franklin Co., Kentucky, USA
  • Conklin Limestone Quarry, Lincoln, Providence, Rhode Island, USA
  • Cornwall Iron mine, Lebanon Co., Pennsylvania, USA
  • Cochetopa Hills Area, Saguache Co., Colorado, USA
  • Chimney Rock quarry, near Bound Brook, Somerset Co., New Jersey, USA
  • Chino ore body, Central Mining District, Grant Co., Nevada, USA
  • Christmas Mine, Hayden, Gila Co., Arizona, USA
  • Chute prospect, Casco, Cumberland Co., Maine, USA
  • Cimarron City/Elizabethtown, Colfax Co., New Mexico, USA
  • Cincinnati mine, St. Peter's Dome, Pikes Peak Region, El Paso Co., Colorado, USA
  • Cleveland/Bonanza Mines, Chewelah, Stevens Co., Washington, USA
  • Copper Queen Mine, Bisbee, Cochise Co., Arizona, USA
  • Edgemoggin Silver mine, Sedgwick, Hancock Co., Maine, USA
  • Cuba City, Grant Co., Wisconsin, USA
  • Cornwall No. 3 mine, Cornwall, Lebanon Co., Pennsylvania, USA
  • Coventry Area, Kent Co., Rhode Island, USA
  • Cresson Mine, Cripple Creek District, Teller Co., Colorado, USA
  • Crestmore Quarry, Crestmore, Riverside Co., California, USA
  • Crisman, Boulder Co., Colorado, USA
  • Crocker Hill mines, Paris, Oxford Co., Maine, USA
  • Crooker prospect, Newry, Oxford Co., Maine, USA
  • Crystal Pass, Ray, Pinal Co., Arizona, USA
  • Climax Mine, Climax, Lake Co., Colorado, USA
  • Magma Mine, Superior, Pinal Co., Arizona, USA
  • Manville quarry, Cumberland, Providence Co., Rhode Island, USA
  • Marie Mine, Carbon Co., Montana, USA
  • Maine Acton mine, Lebanon, York Co., Maine, USA
  • Nason mine, Batchelder's Grant, Oxford Co., Maine, USA
  • Midas, Elko Co., Nevada, USA
  • Mt Mica mine, Paris, Oxford Co., Maine, USA
  • Mt Peak pyrite mine, Charlemont, Franklin Co., Massachusetts, USA
  • Mt. Arat prospect, Phippsburg, Sagadahoc Co., Maine, USA
  • Manton, Providence Co., Rhode Island, USA
  • Manton Avenue quarry, Providence, Providence Co., Rhode Island, USA
  • Mammoth-St. Anthony mine, Tiger, Pinal Co., Arizona, USA
  • Magmont mine, Bixby, Iron Co., Missouri, USA
  • Magmount mine, Bixby, Missouri, USA
  • Magnet Cove, Hot Spring Co., Arkansas, USA
  • Magruder mica Mine, Washington, Wilkes Co., Georgia, USA
  • Mahopac Iron Mine, Brewster, Putnam Co., New York, USA
  • Marquette, Marquette Co., Michigan, USA
  • Maine Feldspar mine, Auburn, Androscoggin Co., Maine, USA
  • Millington quarry, Millington, Somerset Co., New Jersey, USA
  • Mt. Baldy & Gold Mt., Ohio, Utah, USA
  • Mt. Glines mine, Milton, Oxford Co., Maine, USA
  • New Rambler copper-gold-platinum district, Albany Co., Wyoming, USA
  • Mineral Hill, Carroll Co., Maryland, USA
  • Mineral Park Mine, Ithaca Peak, Mohave Co., Arizona, USA
  • Mineral Point, Iowa Co., Wisconsin, USA
  • Mineral, Mineral Co., Virginia, USA
  • Mistake Mine, Wickenburg, Maricopa Co., Arizona, USA
  • Mt Belvidere mines, Lowell & Eden Mills, Orleans Co., Vermont, USA
  • Monarch mine, Alexandria, Grafton Co., New Hampshire, USA
  • Moneta Area, Bedford Co., Virginia, USA
  • Mt.Pisgan Area, Jim Thorpe, Carbon Co., Pennsylvania, USA
  • Randall Mt. locality, Parsonsfield, York Co., Maine, USA
  • Mountain Consolidated Mine, Butte, Silver Bow Co., Montana, USA
  • Murfreesboro, Pike Co., Arkansas, USA
  • Mountain City Copper Mine, Elko Co., Nevada, USA
  • Nay-Fogg mine, West Milan, Coos Co., New Hampshire, USA
  • NE Mine Co. Quarry, Adams, Berkshire Co., Massachusetts, USA
  • Negley, Ohio, USA
  • Nevel mine, Newry, Oxford Co., Maine, USA
  • New Cornelia Mine, Ajo, Pima Co., Arizona, USA
  • Miller adit, Lyman, Grafton Co., New Hampshire, USA
  • Majuba Hill mine, Pershing Co., Nevada, USA
  • Plumbago Gem mine, Neary, Oxford Co., Maine, USA
  • Peabody Pond Granite quarry, Naples, Cumberland Co., Maine, USA
  • Peach Bottom Mine, Stratford, Alleghany Co., North Carolina, USA
  • Pechnick prospect, Rumford, Oxford Co., Maine, USA
  • Penn mines, Carbon Co., Wyoming, USA
  • Plymouth, Windsor Co., Vermont, USA
  • Perry Petalite prospect, Peru, Oxford Co., Maine, USA
  • Patch (Glory Hole) mine, Central City district, Colorado, USA
  • Pikes Peak, Teller Co., Colorado, USA
  • Pea Ridge mine, Sullivan Co., Missouri, USA
  • New Market Mine, New Market, Tennessee, USA
  • Petaca District, Rio Arriba Co., New Mexico, USA
  • Providence, Providence Co., Rhode Island, USA
  • Platteville Area, Iowa Co., Wisconsin, USA
  • Putney, Windham Co., Vermont, USA
  • Quabbin Aqueduct, Hardwick, Worcester Co., Massachusetts, USA
  • Quarries, Tate Area, Pickens Co., Georgia, USA
  • Quartzite, Yuma Co., Arizona, USA
  • Questa Mine, Taos Co., New Mexico, USA
  • Preble Hill mine, Garland, Penobscot Co., Maine, USA
  • Pine Island, Orange Co., New York, USA
  • Pints Quarry/Waterloo lead and zinc Mines, Dubuque, DubuqueCo., Iowa, USA
  • Masslite quarry, Plainville, Norfolk Co., Massachusetts, USA
  • Marion/Salem/Princeton, Crittendon Co., Kentucky, USA
  • May Day/Comstock Mines, La Plata District, La Plata Co., Colorado, USA
  • McLaughlin's Ledge, Cumberland, Providence Co., Rhode Island, USA
  • Melrose mine, Stoneham, Oxford Co., Maine, USA
  • Memphis Mine, Organ district, Dona Ana Co., New Mexico, USA
  • Menominee Range, Dickinson & Iron Co., Michigan, USA
  • Miami, Gila Co., Arizona, USA
  • Mariposa mine, Terlingua district, Brewster Co., Texas, USA
  • Mascot Mine, Gorham, Coos Co., New Hampshire, USA
  • Mascot District, Jefferson City, Tennessee, USA
  • Pioche District, Lincoln Co., Nevada, USA
  • Pittsburg/McClellan Mines, Pope Co., Illinois, USA
  • Perkins Island Beryl locality, Georgetown, Sagadahoc Co., Maine, USA
  • Matchless, Leadville District, Lake Co., Colorado, USA
  • New Shoreham, Newport Co., Rhode Island, USA
  • Martin Marietta Quarry, Hickory, Catawba Co., North Carolina, USA
  • Mary Murphy Mine, Chalk Creek, Chaffee Co., Colorado, USA
  • Marysvale, Piute Co., Utah, USA
  • Massachusetts Talc Company mine, Rowe, Franklin Co., Massachusetts, USA
  • Monroe, Union Co., North Carolina, USA
  • Carlton mine, Chester, Windham Co., Vermont, USA
  • Bull Moose/Rice/Victory/Tip Top/White Elephant etc, Custer, Pennington Co., South Dakota, USA
  • Bullion Mining & Milling mine, Acton, York Co., Maine, USA
  • Bunker Hill mine, Kellogg, Shoshone Co., Idaho, USA
  • Burro Mountain Area, Central District, Grant Co., New Mexico, USA
  • Butte General Area, Montana, USA
  • Cactus mine, San Francisco district, Utah, USA
  • Cactus Rat mines, near Thompson, Grand Co., Utah, USA
  • Carmel Antimony mine, Carmel, Penobscot Co., Maine, USA
  • Buckwheat mine dump, Franklin, Sussex Co., New Jersey, USA
  • Buckfield Magnetite mine, Buckfield, Oxford Co., Maine, USA
  • Catherine Mt. Molybdenite prospect, T10 SD, Hancock Co., Maine, USA
  • Centennial (La Plata) gold district, Albany Co., Wyoming, USA
  • Champion Mine, Lake City, Hinsdale Co., Colorado, USA
  • Champion mine, near Laws, Inyo Co., California, USA
  • Champion mine, White Mountains, Mono Co., California, USA
  • Champion-Consolidated mines, Milton, Oxford Co., Maine, USA
  • Chandlers Mill/Smith Mine etc, newport, Sullivan Co., New Hampshire, USA
  • Chapel Hill, Orange Co., North Carolina, USA
  • Charles Davis Mica mine, North Groton, Grafton Co., New Hampshire, USA
  • Calumet Iron Mine, Salida, Chaffee Co., Colorado, USA
  • Brummet Creek, Nashville Area, Brown Co., Indiana, USA
  • 79 Mine, Banner District, Gila Co., Arizona, USA
  • ACCO Stone Quarry, Montgomery Co., Virginia, USA
  • Acton mine, Acton, York Co., Maine, USA
  • Adams mine, San Juan Co., Colorado, USA
  • Adirondacks, Sanford & Star lakes, Essex Co., New York, USA
  • Aggregate Industries quarry, Ashland, Middlesex Co., Massachusetts, USA
  • Alaska Mine, Poughkupsie Gulch (Silverton District), San Juan Co., Colorado, USA
  • Alder Pond locality, Lower Enchanted, Somerset Co., Maine, USA
  • 700' level, Sta.167, Queens Tunnel of NYC Water Tunnel #3, Woodside, Queens, New York City, New York, USA
  • Beryl Mountain Mine, South Acworth, Sullivan Co., New Hampshire, USA
  • Callahan mine, Brooksville, Hancock Co., Maine, USA
  • Camel's Hump area, Bethlehem, Lehigh Co., Pennsylvania, USA
  • Camp Bird/Dunmore/Monarch Mtn/Portland Mines et., Ouray Area, Ouray Co., Colorado, USA
  • Campbell shaft, Bisbee, Cochise Co., Arizona, USA
  • Canaan Lime Quarry, Falls Village, Litchfield Co., Connecticut, USA
  • Canoe Creek, Blair Co., Pennsylvania, USA
  • Carissa mine, South Pass-Atlantic City gold district, Fremont Co., Wyoming, USA
  • Carlin gold deposit, Elko, Elko Co., Nevada, USA
  • Carlin Mine, Carlin, Eureka Co., Nevada, USA
  • Aldrich mine, Stoneham, Oxford Co., Maine, USA
  • Case Coal mine, Portsmouth, Newport Co., Rhode Island, USA
  • Monte Cristo District, Snohomish Co., Washington, USA
  • Brewer Knob, Jefferson, Chesterfield Co., South Carolina, USA
  • Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA
  • Bristol, Bristol Co., Rhode Island, USA
  • Brooklyn Mine, Cement Creek District, San Juan Co., Colorado, USA
  • Broome prospect, Newry, Oxford Co., Maine, USA
  • Browns Creek Area, Natrop/Mount Antero, Chaffee Co., Colorado, USA
  • Brant Lake Area, Thurman, Warren Co., New York, USA
  • Bessey mines, Buckfield, Oxford Co., Maine, USA
  • Breckenridge, Summit Co., Colorado, USA
  • Boston-Acton mine, Acton, York Co., Maine, USA
  • Brandywine Quarry, Willimgton, New Castle Co., Delaware, USA
  • Morenci-Metcalf, Clifton, Greenlee Co., Arizona, USA
  • Morey, Nye Co., Nevada, USA
  • Mount Chase Locality, T6 R6 WELS, Penobscot Co., Maine, USA
  • Mohawk Mine, Goldfield, Esmeralda Co., Nevada, USA
  • Goddard Ledge mines, Rumford, Oxford Co., Maine, USA
  • Chester Emery mine, Chester, Hampden Co., Massachusetts, USA
  • "Bradbury Mt. Gold & Silver"" mine, Woodstock, Oxford Co., Maine, USA"
  • Branchville Mica mine, Branchville, Fairfield Co., Connecticut, USA
  • Betts Manganese Mine, Plainfield, Hampshire Co., Massachusetts, USA
  • Betty Baker Mine, Hillsville, Virginia, USA
  • Booth & Lane Mines, Monroe, Fairfield Co., Connecticut, USA
  • Black Hawk mine, Black Hawk district, Grant Co., New Mexico, USA
  • Central City, Gilpin Co., Colorado, USA
  • Brown-Tipton Mine, Mosheim, Greene Co., Tennessee, USA
  • Carmel, Putnam Co., New York, USA
  • Carrsville Area, Livingston Co., Kentucky, USA
  • Carson Hill/New Melones Lake, Calaveras Co., California, USA
  • Cartersville district, Bartow Co., Georgia, USA
  • Casco mine, Acton, York Co., Maine, USA
  • Bond Mt. prospect, Newfield, York Co., Maine, USA
  • Blue Berry Mt., Woburn, Middlesex Co., Massachusetts, USA
  • Betty O'Neal, Nevada, USA
  • Bisbee, Cochise Co., Arizona, USA
  • Black Cloud Mine, Leadville District, Lake Co., Colorado, USA
  • Black Hawk district, Grant Co., New Mexico, USA
  • Black Mt. mines, Rumford, Oxford Co., Maine, USA
  • Bryant Pond Granite quarry, Woodstock, Oxford Co., Maine, USA
  • Blackbird District near Cobalt, Salmon, Lehmi Co., Idaho, USA
  • Bloomington Crushed Stone Quarry, Monroe Co., Indiana, USA
  • Blue Ball Stone Co. Quarry, Blue Ball, Pennsylvania, USA
  • Hendre quarry, Glyn Ceiriog, Clwyd, Wales
  • Ton Mawr Quarry, Pentyrch, Cardiff, South Glamorgan, Wales
  • Bontddu trial level, Bontddu, Gwynedd, Wales
  • Plynlimon Mine, Ponterwyd, Dyfed, Wales
  • Brynarian Mine, Talybont, Llangynfelyn, Dyfed, Wales
  • Bwlch Mine (Deganwy), Llandudno, Gwynedd, Wales
  • Nant Helen opencast coal mine, Neath, Wales
  • Nant-y-Cagel mine (Eagle Brook), Talybont, Ceulanymaesmawr, Dyfed, Wales
  • Nantymwyn Mine, Rhandirmwyn, Llandovery, Dyfed, Wales
  • Parys Mountain mine, Anglesey, Wales
  • Parc Mine, Wrexham, Wales
  • Penrhiw mine, Ystumtuen, Dyfed, Wales
  • Castell Mine, Ponterwyd, Dyfed, Wales
  • Hendre Felen Mine, Ysbyty Ystwyth, Dyfed, Wales
  • Cae Coch Mine, Llanrwst, Gwynedd, Wales
  • Sygun Mine, Beddgelert, Gwynedd, Wales
  • Machen Quarry, Machen, Mid Glamorgan, Wales
  • Ystumteun Mine, Ponterwyd, Dyfed, Wales
  • Darren Mine, Penbontrhydybeddau, Parcel Canol, Dyfed, Wales
  • Llechwedd Helyg mine, Tir-y-Mynach, Dyfed, Wales
  • Llanharry Hematite Mine,Llanharry, Mid Glamorgan, Wales
  • Cwmystwyth mine,Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Dyfed, Wales
  • Cwmparc Tips, Treorchy, Rhondda, Wales
  • Esgair Hir mine, Talybont, Ceulanymaesmawr, Dyfed, Wales
  • Esclusham Mountain, Minera, Wales
  • Dylife Mine, Dylife, Machynlleth, Powys, Wales
  • Drws-y-Coed mine, Llandwrog, Gwynedd, Wales
  • Dolaucothi Mine, Lampeter, Dyfed, Wales
  • Hafan Mine, Talybont, Ceulanymaesmawr, Dyfed, Wales
  • Brynyrafr Mine, Talybont, Trefeirig, Dyfed, Wales
  • Kipushi mine, Lubumbashi, Shaba, Zaire
  • Broken Hill mine, Kabwe, Zambia


Usos

Fue empleada de antiguo en los eslabones de las armas de fuego como piedra foguera, pero por su poca dureza fue sustituida pronto. Hoy día su principal aplicación está en la extracción de ácido sulfúrico. A veces es posible extraer de ella cantidades de cobre y oro, con los que a menudo aparece asociada. La obtención del ácido se produce mediante el «tueste» del mineral, es decir, se calienta hasta altas temperaturas en presencia de oxígeno, ya que así emana dióxido de azufre (SO2) y posteriormente este se transforma artificialmente a trióxido de azufre (SO3) al que se añade agua para transformarlo en ácido.

Como piedra ornamental, de interés científico y coleccionista.

Bibliografía y más información

American Mineralogist, vol. 74, p.1168, (1989)

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