Covellita

Características generales


Datos generales


Fórmula: CuS
Sistema de cristalización: Hexagonal
Lustre: Adamantino
Color: Light blue, indigo blue, dark blue or black
Dureza: 1,5-2
Rareza: raro
Características distintivas: Crystal habit, cleavage, density, iridescence and colour.

Clasificación

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

Nickel-Strunz : 02.CA.05a
  • 2: Sulfuros y sulfosales
  • 02.C: Sulfuros con metal, M:S = 1:1 (y similar)
  • 02.CA: Con Cu

Dana 8th ed. : 2.8.12.1

Etimología:

Named after the Italian mineralogist, N. Covelli (1790-1829).



Formación y ambiente

Accessory, hydrothermal (medium temp), infiltration

Propiedades fisicas

Hábito: Platy, massive or foliated

Lustre: Adamantino

Transparencia: Opaco

Color: Light blue, indigo blue, dark blue or black

Color en sección fina: Incolora

Dureza (Mohs): 1,5-2

Tenacidad: Brittle, Flexible

Exfoliación::
  • Primera exfoliación: Perfecta en [0001]
  • Segunda exfoliación: Perfecta
  • Tercera exfoliación: Perfecta


Fractura: Irregular

Densidad: 4,6-4,8 g/cm3 (medida) | 4,68 g/cm3 (calculada)

Cristalografía

Sistema cristalino: Hexagonal

Clase (H-M): 1m (6/m 2/m 2/m) - Dihexagonal dipiramidal

Grupo espacial: P6(3)/mmc

Parámetros de la celda: a=3,792Å c=16,344Å

Volumen de unidad de celda: V 203,53Å

Z: 6

Difracción de Rayos X:
Difracción de Rayos X
D(hkl)Intensidad
2,813100
1,89675
3,04865

Propiedades ópticas

Tipo: Opaco

Valores RI: nα= 1,4 - 2,62

Dispersión: Ninguna

Anisotropismo: Fuerte

Reflectancia:
Reflectancia
D(hkl)Intensidad
470.012,4
546.06,4
589.03,7
650.05,9


Propiedades químicas

Fórmula: CuS

Elementos químicos: Cu, S

Composición química: S: 33,54%, Cu: 66,46%,

Tests químicos

Fusibilidad: 2; Mineral tipo: Natrolita; Punto de fusión: 800ºC; Funde con mechero de gas
Color de la llama: Blue
Formación de sublimados: Se funde en glóbulos metálicos



Relaciones con otros minerales

Minerales acompañantes:

Bornita

BornitaSulfuros y sulfosales
Fórmula: Cu5FeS4
Sistema de cristalización: Ortorrómbico
Dureza: 3
Color: En superficie reciente es de color bronce pardo, pero al ser expuesta al aire se cubre rápidamente con una pátina jaspeada, púrpura y azulada (por eso se llama también mineral de pavo), y finalmente casi negra.
Raya: Negro grisáceo
Brillo: Metálico
 

Calcosina

CalcosinaSulfuros y sulfosales
Fórmula: Cu2S
Sistema de cristalización: Ortorrómbico
Dureza: 2,5-3
Color: Gris oscuro; pátina: negro mate con reflejos azules
Raya: Negro grisáceo
Brillo: Metálico
 

Calcopirita

CalcopiritaSulfuros y sulfosales
Fórmula: CuFeS2
Sistema de cristalización: Tetragonal
Dureza: 3,5-4
Color: Amarillo-latón, a menudo con iridiscencias
Raya: Negra verdosa
Brillo: Metálico
 

Cuprita

CupritaÓxidos
Fórmula: Cu2O
Sistema de cristalización: Cúbico
Dureza: 3,5-4
Color: Rojo, rojo púrpura, rojo pardusco o negro
Raya: Roja pardusca
Brillo: Adamantino
 

Enargita

EnargitaSulfuros y sulfosales
Fórmula: Cu3AsS4
Sistema de cristalización: Ortorrómbico
Dureza: 3
Raya: Negra
Brillo: Metálico
 

Pirita

PiritaSulfuros y sulfosales
Fórmula: FeS2
Sistema de cristalización: Cúbico
Dureza: 6-6,5
Color: Amarillo latón
Raya: Gris, parda o negra verdosa
Brillo: Metálico
 

Yacimientos y localidades de interés

Localidades

  • Mt. Vesuvius, Napoli, Campania, Italy - Localidad tipo.
  • Mount Vesuvius, Naples, Campania, Italy - Localidad tipo.
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Capillitas mine, Andalgalá, Catamarca, Argentina
  • Cygnet, Tasmania, Australia
  • Mt Lyell, Tasmania and Tingha, New South Wales, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Mt Lyell, Tasmania and Tingha, New South Wales, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Cygnet, Tasmania, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • Cygnet, Tasmania, Australia
  • Mt Isa Mine, Mt Isa, Queensland, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Cygnet, Tasmania, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Mt Lyell, Tasmania and Tingha, New South Wales, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Proprietary mine, Broken Hill, New South Wales, Australia
  • Burra Burra mine, Burra, South Australia, Australia
  • Mt Lyell, Tasmania and Tingha, New South Wales, Australia
  • 132 North nickel mine, Widgiemooltha, Western Australia, Australia
  • Mt Cleveland Mine, Luina, Tasmania, Australia
  • Rauris valley, Salzburg, Austria
  • Rotgülden, Salzburg, Austria
  • Schellgaden, Salzburg, Austria
  • Rauris valley, Salzburg, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Schellgaden, Salzburg, Austria
  • Rotgülden, Salzburg, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Rauris valley, Salzburg, Austria
  • Rotgülden, Salzburg, Austria
  • Schellgaden, Salzburg, Austria
  • Rauris valley, Salzburg, Austria
  • Walchen slags, Öblarn, Liezen, Steiermark, Austria
  • Schwaz-Brixlegg, Tyrol, Austria
  • Rotgülden, Salzburg, Austria
  • Schellgaden, Salzburg, Austria
  • El Dragón mine, Quijarro, Potosí Dept, Bolivia
  • Lavra do Énio pegmatite, Galiléia, Minas Gerais, Brazil
  • Boqueirãozinho pegmatite, Parelhas, Rio Grande do Norte, Brazil
  • Port Radium, Northwest Territories, Canada
  • Nanisivik Mine, Baffin Island, Nunavut, Northwest Territories, Canada
  • East Kemptville Tin Mine, East Kemptville, Yarmouth Co., Nova Scotia, Canada
  • Moldava, Teplice, Krusne Hory, Vychodocesky, Czech Republic
  • Hütte, Príbram, Stredocesky, Czech Republic
  • Litce nad Orlici, Vychodocesky, Czech Republic
  • Nejedly I, Libusin, Kladno, Stredocesky, Czech Republic
  • Alexander Gallery, Vrancice, Príbram, Stredocesky, Czech Republic
  • Wheal Maudlin, Lanlivery, Cornwall, England
  • Wheal Phoenix, Linkinhorne, Cornwall, England
  • Wheal Kind, St. Agnes, Cornwall, England
  • Waterbank mine, Ecton, Staffordshire, England
  • Pave York Mine, Greenburn Valley, Cumbria, England
  • Old Potts Gill mine, Caldbeck Fells, Cumbria, England
  • Penberthy Croft mine, St. Hilary, Cornwall, England
  • Mulberry Stockworks, Lanivet, Cornwall, England
  • Mt Wellington mine, Bissoe, Cornwall, England
  • Seathwaite Mine, Seathwaite Tarn. Conist, Cumbria, England
  • Shap Blue Quarry, Shap, Cumbria, England
  • Roughton Gill Mine, Caldbeck Fells, Cumbria, England
  • Mount Wellington mine, Bissoe, Cornwall, England
  • Wheal Kine, St. Agnes, Cornwall, England
  • Thief Gills, Roughtongill, Cumbria, England
  • Silver Gill, Caldbeck Fells, Cumbria, England
  • Carn Brea, Camborne, Illogan, Cornwall, England
  • Carrock mine, Caldbeck Fells, Cumbria, England
  • Gunheath China Clay Pit, Stenalees, St.Austell, Cornwall, England
  • Deer Hills Baryte mine, Caldbeck Fells, Cumbria, England
  • Brae Fell mine, Caldbeck Fells, Cumbria, England
  • Brandy Gill Lead mine, Caldbeck Fells, Cumbria, England
  • Geevor mine, Trewellard, St. Just, Cornwall, England
  • Engine Vein, Alderley Edge, Shropshire, England
  • Dale Head Mine, Newlands Valley, Cumbria, England
  • Driggith Mine, Caldbeck Fells, Cumbria, England
  • Buckbarrow Beck Veins, Waberthwaite, Cumbria, England
  • Clevedon Beach, Somerset, England
  • Gunheath pit, Bugle, Hensbarrow Moor, Cornwall, England
  • Belstone Consols, Devon, England
  • Black Scar Workings, Levers Water, Cumbria, England
  • Le Vialas, Lozère, Languedoc-Roussillon, France
  • Les Farges mine, Corrèze, Limousin, France
  • Tistoulet mine, Padern, Aude, Languedoc-Roussillon, France
  • Falgayrolles, Aveyron, Midi-Pyrénées, France
  • Bousiéyas, Alpes-Maritimes, France
  • Buhulien, Côtes-du-Nord, France
  • Chessy-les-Mines, Rhône, Rhône-Alpes, France
  • Cap Garonne, Le Pradet, Var, France
  • Monsols, Rhône, Rhône-Alpes, France
  • Herzog-Julius-Hütte, Goslar, Harz Mts, Sachsen, Germany
  • Königswart, Freudenstadt, Baden-Wuerttemberg, Germany
  • Hallwangen, Freudenstadt, Baden-Wuerttemberg, Germany
  • Kirchheimerstollen, Müllenbach, Baden-Baden, Baden-Wuerttemberg, Germany
  • Hilfe Gottes mine, Wiemannsbucht, Bad Grund, Harz Mts, Sachsen, Germany
  • Hintertal, Kinzigtal, Baden-Wuerttemberg, Germany
  • Hühn mine, Trusetal, Bad Salzungen, Thüringen, Germany
  • Johann mine, Wittichen, Baden-Wuerttemberg, Germany
  • Kafersteige mine, Pforzheim, Baden-Wuerttemberg, Germany
  • Hechtsberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
  • Glücksrad mine, Clausthal-Zellerfeld, Harz Mts, Sachsen, Germany
  • Clara mine, Oberwolfach, Baden-Wuerttemberg, Germany
  • Christophstal, Freudenstadt, Baden-Wuerttemberg, Germany
  • Silberbrünnle mine, Kinzigtal, Baden-Wuerttemberg, Germany
  • St. Andreasberg, Hartz Mts, Niedersachsen, Germany
  • Wenzel mine, Oberwolfach, Baden-Wuerttemberg, Germany
  • Uranlagerstatte Mullenbach, Baden-Baden, Germany
  • Gangzug Prinzbach, Kinzigtal, Baden-Wuerttemberg, Germany
  • Daniel mine, Schneeberg, Sachsen, Germany
  • Eberhard mine, Alpirsbach, Baden-Wuerttemberg, Germany
  • Geigeshalde / Falkenstein, Schramberg, Kinzigtal, Baden-Wuerttemberg, Germany
  • Glückauf mine, Bad Grund, Harz Mts, Sachsen, Germany
  • Anton mine, Heubachtal, Wittichen, Baden-Wuerttemberg, Germany
  • Bärensteinbruch quarry, Radautal, Bad Harzburg, Harz Mts, Sachsen, Germany
  • Rammelsberg mine, Goslar, Harz Mts, Sachsen, Germany
  • Hilarion adit, Agios Konstandinos, Laurion, Attica, Greece
  • Ilimaussaq, West Greenland
  • Ivigtut, Arsuk Fjord, Greenland
  • Silvermines district, Co. Tipperary, Ireland
  • Calabona mine, Alghero, Sardinia, Italy
  • Carrara, Tuscany, Italy
  • Val Graveglia, Liguria, Italy
  • Sarbay silver mine, Rudni, Kusteni Oblast, Kazakhstan
  • Chaidarkan, Alai, Kyrgyzstan
  • Chauvay, Alai, Kyrgyzstan
  • Boleo, Santa Rosalia, Baja California, Mexico
  • Mina Ojuela, Mapimi, Durango, Mexico
  • Kombat mine, Tsumeb, Otavi, Namibia
  • Alt Bobos mine, Otavi, Namibia
  • Abaneb West mine, Otavi, Namibia
  • Berg Aukas, Otavi, Namibia
  • Tschudi mine, Otavi, Namibia
  • Tsumeb mine, Tsumeb, Otavi, Namibia
  • Kongsberg, Buskerud, Norway
  • Panasqueira mine, Panasqueira, Beira-Beixa, Portugal
  • Dal'negorsk, Primorskiy Kray, Russia
  • Mutnovskoe, Kamchatka, Russia
  • Polar Urals, Tyumen Oblast, Russia
  • Rodnikovoe, Kamchatka, Russia
  • Murun massif, Davan, Torgo river basin, Aldan Shield, Yakutia, Siberia, Russia
  • Aldan Shield, Yakutiya, Siberia, Russia
  • Boyleston Quarry, Barrhead, Glasgow, Scotland
  • Hartfield Moss, Strathclyde, Scotland
  • Silver Glen, Clackmannanshire, Scotland
  • Leadhills-Wanlockhead district, Strathclyde/Dumfries and Galloway, Scotland
  • Loanhead quarry, near Beith, Strathclyde, Scotland
  • Messina, Transvaal, South Africa
  • Horcajo mines, Ciudad Real, Spain
  • Rio Tinto mines, Huelva, Spain
  • Mürtschenalp, Glarus, Switzerland
  • Nikitovka deposit, Donbass, Ukraine
  • Rawley Mine, Thebna, Maricopa Co., Arizona, USA
  • Red Mountain District, Mendocino Co., California, USA
  • Majuba Hill mine, Pershing Co., Nevada, USA
  • Alice mine, Alice district, Clear Creek Co., Colorado, USA
  • 79 Mine, Banner District, Gila Co., Arizona, USA
  • American mine, Bingham Canyon, Salt Lake Co., Utah, USA
  • Apache Mine, near Globe, Gila Co., Arizona, USA
  • Arlington Copper Mine, North Arlington, Bergen Co., New Jersey, USA
  • Questa Mine, Taos Co., New Mexico, USA
  • Platteville Area, Iowa Co., Wisconsin, USA
  • Summitville, Rio Grande Co., Colorado, USA
  • White Caps/Outlaw Mines etc, Manhattan, Nye Co., Nevada, USA
  • Manhan Lead Silver Mine, Southampton, Hampshire Co., Massachusetts, USA
  • mica Lode/Meyers/School Section Mines/etc, Royal Gorge Area, El Paso Co., Colorado, USA
  • Mountain City Copper Mine, Elko Co., Nevada, USA
  • New Cornelia Mine, Ajo, Pima Co., Arizona, USA
  • New Rambler copper-gold-platinum district, Albany Co., Wyoming, USA
  • Old Guard Mine, Tombstone, Cochise Co., Arizona, USA
  • Barr Mine, Picher, Oklahoma, USA
  • Benitoite/Dallas/Victor/New Idria Mines, New Idria Mining District, San Benito & Fresno Counties, California, USA
  • Bisbee, Cochise Co., Arizona, USA
  • Callahan mine, Brooksville, Hancock Co., Maine, USA
  • Butte, Silver Bow Co., Montana, USA
  • Butte General Area, Montana, USA
  • Bunker Hill mine, Kellogg, Shoshone Co., Idaho, USA
  • Buckhorn mine, Red Cloud district, Gallinas Mts, Lincoln Co., New Mexico, USA
  • Cashin/Bitter Creek/J & J Mine etc, Paradox Valley Area/La Sal Creek, Montrose Co., Colorado, USA
  • Black Hawk mine, Black Hawk district, Grant Co., New Mexico, USA
  • Black Hawk district, Grant Co., New Mexico, USA
  • Copper Queen Mine, Bisbee, Cochise Co., Arizona, USA
  • East Colusa Mine, Butte, Silver Bow Co., Montana, USA
  • Eagle Mine, Bonanza mining district, Saguache Co., Colorado, USA
  • Copper River District, Kennecott, Alaska, USA
  • Benson Mines, Newton Falls/Star Lake, St.Lawrence Co., New York, USA
  • Comstock Lode, Virginia City, Storey Co., Nevada, USA
  • Christmas Mine, Hayden, Gila Co., Arizona, USA
  • Centennial Eureka mine, Tintic distr., Juab Co, Utah, USA
  • Cornwall, Lebanon Co., Pennsylvania, USA
  • Bristol Copper Mine, Bristol, Hartford Co., Connecticut, USA
  • Wagon Wheel Gap, Pagosa Springs del Norte, Mineral Co., Colorado, USA
  • Zaca Mine, Monitor-Mogal District, Alpine Co., California, USA
  • Fernando Mine/etc, Darwin District, Inyo Co., California, USA
  • Fat Jack mine, Lane Mt., Yavapai Co., Arizona, USA
  • Evergreen mine, near Apex, Gilpin Co., Colorado, USA
  • Encampment copper district, Carbon Co., Wyoming, USA
  • Magdalena district, Socorro Co., New Mexico, USA
  • Loudville Lead Mine, Loudville, Hampshire Co., Massachusetts, USA
  • Liberty Copper/Dolly Hyde Copper Mines, Libertytown, Fredrick Co., Maryland, USA
  • Lewis/Adams/Washington/NezPerce/Idaho Counties, Seven Devils Mining District, Idaho, USA
  • Leonard Mine etc, Butte, Silver Bow Co., Montana, USA
  • La Sal No. 2 mine, Beaver Mesa, Mesa Co., Colorado, USA
  • Guston Mine etc, Red Mountain Pass Area, Ouray Co., Colorado, USA
  • Keystone-Douglas Creek gold-copper district, Albany Co., Wyoming, USA
  • Kennecott, Copper river district, Alaska, USA
  • Jackson Canyon, Humbolt Range, Pershing Co., Nevada, USA
  • Interstate 295 roadcut, Cranston, Providence Co., Rhode Island, USA
  • White Pine mine, Ontonagan Co., Michigan, USA
  • La Sal district, San Juan Co., Utah, USA
  • French Creek Mines, Knauertown, Chester Co., Pennsylvania, USA
  • Galena/Baxter Springs/Lawton, Cherokee Co., Kansas, USA
  • Mammoth-St. Anthony mine, Tiger, Pinal Co., Arizona, USA
  • Silver Crown copper district, Laramie Co., Wyoming, USA
  • Sneech Pond Copper mine, Cumberland, Providence Co., Rhode Island, USA
  • Sterling Hill and Franklin Furnace, Sussex Co., New Jersey, USA
  • Stewart Mine, Butte, Silver Bow Co., Montana, USA
  • Magma Mine, Superior, Pinal Co., Arizona, USA
  • Sunnyside mine, Silverton Mining District, Howardsville, San Juan Co., Colorado, USA
  • Tintic Standard mine, Dividend, Utah Co., Utah, USA
  • Twin Buttes, Pima Co., Arizona, USA
  • Saginaw Hill, Pima Co., Arizona, USA
  • Royal Gorge Area, Fremont Co., Colorado, USA
  • General Area, Franklin, Sussex Co., New Jersey, USA
  • General Area, Jasper & Newton counties, Missouri, USA
  • General Area, Picher/Commerce/Quapaw/Miami/Peoria, Ottowa Co., Oklahoma, USA
  • Gillman District, Colorado, USA
  • Glove Mine, San Rita Mts., Santa Cruz Co., Arizona, USA
  • Gold Hill mine, Tooele Co., Utah, USA
  • Granite Gap, Hidalgo Co., New Mexico, USA
  • Garret Mountain Quarries, Paterson, Passaic Co., New Jersey, USA
  • Nant-y-Cagel mine (Eagle Brook), Talybont, Ceulanymaesmawr, Dyfed, Wales
  • Llechwedd Helyg mine, Tir-y-Mynach, Dyfed, Wales
  • Bontddu trial level, Bontddu, Gwynedd, Wales
  • Penrhiw mine, Ystumtuen, Dyfed, Wales
  • Parys Mountain mine, Anglesey, Wales
  • Bwlchrehennaid Mine (Level Newydd), Goginan, Tirymynach, Dyfed, Wales
  • Clogau St. Davids mine, Bontddu, Gwynedd, Wales
  • Frongoch Mine, Pontrhydygroes, Dyfed, Wales
  • Dylife Mine, Dylife, Machynlleth, Powys, Wales
  • Esgair Hir mine, Talybont, Ceulanymaesmawr, Dyfed, Wales
  • Dolyhir Quarry, Powys, Wales
  • Nant-y-Car Mine, Rhayader, Powys, Wales


Bibliografía y más información

American Mineralogist, vol. 61, p.996(s), (1976)
Mineral and Gem encyclopedia, p.158, (1982)
Zeitschrift für Kristallographie, vol. 184, p.111, (1988)

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