Fluorapatito
Propiedades fisicas
Hábito: Massive - granular or euhedral crystals
Lustre: Vítreo - resinoso
Transparencia: Transparente, Opaco
Color: Violet, green, colourless, brown or blue
Color en sección fina: Incolora
Raya: Blanco
Dureza (Mohs): 5
Tenacidad: Frágil
Exfoliación::
- Primera exfoliación: Imperceptible en [0001]
- Segunda exfoliación: Imperceptible
- Tercera exfoliación: Imperceptible
Fractura: Concoidal
Densidad: 3,1-3,2 g/cm3 (medida) | 3,18 g/cm3 (calculada)
Cristalografía
Sistema cristalino:Hexagonal
Clase (H-M): 1m (6/m) - Dipiramidal
Grupo espacial: P6(3)/m
Parámetros de la celda: a=9,368Å c=6,884Å
Volumen de unidad de celda: V 523,2Å
Z: 2
Difracción de Rayos X:D(hkl) | Intensidad |
---|---|
2,8 | 100 |
2,702 | 60 |
2,772 | 55 |
Propiedades ópticas
Tipo: Uniaxial (-)
Valores RI: nα= 1,633; nγ= 1,63
Máxima birrefringencia: δ = 0,003
Dispersión: Ninguna
Pleocroismo: Dichroic
X: Incoloro
Y: Incoloro
Propiedades químicas
Fórmula: Ca2Ca3(PO4)3F
Elementos químicos: Ca, P, O, F
Composición química: P: 18,43%, F: 3,77%, O: 38,07%, Ca: 39,74%, PO4: 56,51%,
Tests químicos
Reacción a los ácidos: Se disuelve en ácido clorhídrico.
Color de la llama: Red, Yellow, Blue-Green
Otros: Heated with magnesium and moistened gives off phosphoretted hydrogen. Heated with sulphuric acid sometimes gives greasy bubbles of hydrofluoric acid.
Otras propiedades
Fluorescente:
Fosforescente:
Relaciones con otros minerales
Miembro del grupo de minerales: Apatite Group
Minerales pertenecientes al Apatite Group
Imagen | Mineral | Fórmula | Sistema | Dureza | Color | Raya | Brillo |
---|---|---|---|---|---|---|---|
![]() | Alforsita | Ba5(PO4)3Cl | Hexagonal | 5 | Incoloro | Blanco | Vítreo |
![]() | Belovita-(Ce) | NaCeSr3(PO4)3F | Trigonal | 5 | Amarillo meloso | Blanco | Vítreo - graso |
![]() | Belovita-(La) | NaLaSr3(PO4)3F | Trigonal | 5 | Amarillo o amarillo verdoso | Blanco | Vítreo |
![]() | Campylita | Pb5(AsO4)3Cl | Hexagonal | 3,5 | Amarillo, blanco, rojo, naranja o pardo | Blanco | Adamantino, resinoso |
![]() | Cloroapatito | Ca5(PO4)3Cl | Hexagonal | 5 | Blanco | Vítreo plomizo | |
![]() | Fluorapatito | Ca2Ca3(PO4)3F | Hexagonal | 5 | Blanco | Vítreo - resinoso | |
![]() | Fluorbritholita-(Y) | Ca2(Y,Ca,Ln)3(SiO4,PO4)3(F,OH) | Hexagonal | ||||
![]() | Fluorcaphita | SrCaCa3(PO4)3F | Hexagonal | 5 | Blanco | Vítreo | |
![]() | Fluorstrophita | SrCaSr3(PO4)3F | |||||
![]() | Hidroxilapatito | Ca5(PO4)3(OH) | Hexagonal | 5 | Blanco | Terroso | |
![]() | Hydroxylapatita-M | Ca5(PO4)3OH | |||||
![]() | Johnbaumita | Ca5(AsO4)3OH | Hexagonal | 4,5 | Blanco o incoloro | Blanco | Vítreo |
![]() | Kuannersuita-(Ce) | NaCeBa3(PO4)3F0.5Cl0.5 | Trigonal | 4,5-5,5 | Blanco | Vítreo | |
![]() | Mimetita | Pb5(AsO4)3Cl | Hexagonal | 3,5 | Blanco | Adamantino, resinoso | |
![]() | Morelandita | Ca2Ba3(AsO4)3Cl | Hexagonal | 4,5 | Blanco | Vítreo - graso | |
![]() | Piromorfita | Pb5(PO4)3Cl | Hexagonal | 3,5-4 | Diversas coloraciones verdosas, amarillento, anaranjado, pardo, gris o blanco. | Blanco | Adamantino, resinoso |
![]() | Stronadelphita | Sr5(PO4)3F | Hexagonal | 5 | |||
![]() | Turneaureita | Ca5(AsO4)3Cl | Hexagonal | 5 | Blanco | Vítreo - graso | |
![]() | Vanadinita | Pb5(VO4)3Cl | Hexagonal | 2,8-3 | Rojo rubí, anaranjado amarillo y castaño. | Amarillo pardusca | Adamantino |
Minerales acompañantes
Imagen | Mineral | Fórmula | Sistema | Dureza | Color | Raya | Brillo |
---|---|---|---|---|---|---|---|
![]() | Arsenopirita | FeAsS | Monoclínico | 5,5-6 | Blanco a gris acerado | Negra | Metálico |
![]() | Calcita | CaCO3 | Trigonal | 3 | Incoloro puro; ofrece varias tonalidades de gris, amarillo, marrón, rojo, verde, azul y negro cuando hay impurezas presentes | Blanco | Vítreo |
![]() | Casiterita | SnO2 | Tetragonal | 6-7 | Gris, verde, incoloro, negro pardusco o pardo. | Blanca pardusca | Adamantino |
![]() | Fluorita | CaF2 | Cúbico | 4 | Incoloro puro, pero dependiendo de sus impurezas puede ser blanca, verde, amarilla, anaranjada, rojiza o violácea. | Blanco | Vítreo |
![]() | Nephelina | (Na,K)AlSiO4 | Hexagonal | 5,5-6 | Blanco | Vítreo - graso | |
![]() | Topacio | Al2(SiO4)(F,OH)2 | Ortorrómbico | 8 | Azul pálido, pardo amarillento, incoloro, rojo, amarillo, marrón | Blanco | Vítreo |
Yacimientos y localidades de interés
Localidades
- Tavistock, Devonshire, England - Localidad tipo.
- Kunar valley, Afghanistan
- Nuristan, Laghman Province, Afghanistan
- Panzher valley, Afghanistan
- Cerro Blanco pegmatites, Cordoba, Argentina
- Burra Burra mine, Burra, South Australia, Australia
- Cygnet, Tasmania, Australia
- Mt Lyell, Tasmania and Tingha, New South Wales, Australia
- Proprietary mine, Broken Hill, New South Wales, Australia
- Spring Creek mine, Flinders Range, South Australia, Australia
- Knappenwald, Untersulzbachtal, Salzburg, Austria
- Schellgaden, Salzburg, Austria
- Constancia mine, Tazna, Sud Chichas, Potosí Dept, Bolivia
- Poopó, Oruro Dept., Bolivia
- Siglo Veinte (XX) mine, Llallagua, Bustillo, Potosí Dept, Bolivia
- Almerindo mine, Linopolis, Minas Gerais, Brazil
- Alto Benedito Pegmatite, Paraíba, Brazil
- Boqueirãozinho pegmatite, Parelhas, Rio Grande do Norte, Brazil
- Corrego do Urucum pegmatite, Minas Gerais, Brazil
- Corrego Frio mine, near Linopolis, Minas Gerais, Brazil
- Golconda Mine, Minas Gerais, Brazil
- Jacuaracu pegmatite, Lavra de Sr. Jose Pinto, Municipo de Timoteo, Jacuaracu, Minas Gerais, Brazil
- Jaguaracu Pegmatite, Jaguaracu, Minas Gerais, Brazil
- Sapucaia pegmatite mine, near Galileia, Minas Gerais, Brazil
- Bear Lake Road, near Tory Hill, Ontario, Canada
- Davis Hill, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
- Davis Quarry, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
- Demix-Varennes quarry, Saint-Amable sill, Varennes, Verchéres Co., Québec, Canada
- Francon quarry, St-Michel distr., Montreal Island, Québec, Canada
- Goulding-Keene Quarry, Dungannon Township, Bancroft, Hastings Co., Ontario, Canada
- Ice River complex, British Columbia, Canada
- Lake Clear - Kuehl Lake area, Renfrew Co., Ontario, Canada
- Mt St.-Hilaire, Rouville Co., Québec, Canada
- Parker mine, Notre Dame du Laus, Québec, Canada
- Poudrette quarry, Mt St.-Hilaire, Rouville Co., Québec, Canada
- Rapid Creek, Big Fish River - Blow River Area, Yukon Territory, Canada
- Sherbrooke, Québec, Canada
- Yates Mine, Huddersfield Township, Pontiac Co., Québec, Canada
- Yates Uranium mine, Otter Lake, Pontiac Co., Ontario, Canada
- Horni Bory, Zdar nad Sazavou, Maehren, Czech Republic
- Horni Slavkov, Karlovy Vary, Czech Republic
- Krasne, Sumperk, Maehren, Czech Republic
- Krupka, Krusne Hory, Vychodocesky, Czech Republic
- Novy rybnik, Pisek, Jihocesky, Czech Republic
- Rasovna, Sumperk, Maehren, Czech Republic
- Smrcina, Sobotin, Sumperk, Maehren, Czech Republic
- Vernerov, Severocesky, Czech Republic
- Vezna, Zdar nad Sazavou, Maehren, Czech Republic
- Vlastejovice, Kutna Hora, Stredocesky, Czech Republic
- Botallack mine, Botallack, St. Just, Cornwall, England
- Colcerrow quarry, Luxulyan, Cornwall, England
- Goonbarrow China Clay pit, St. Austell, Cornwall, England
- Gravel Hill mine, Perranzabuloe, Cornwall, England
- Gunheath China Clay Pit, Stenalees, St.Austell, Cornwall, England
- Gunheath pit, Bugle, Hensbarrow Moor, Cornwall, England
- Halvasso quarry, Longdowns, Cornwall, England
- Kessle quarry, Longdowns, Cornwall, England
- Megiliggar Rocks, Porthleven, Cornwall, England
- Meldon BR Quarry, Okehampton, Devon, England
- New Aplite Quarry, Meldon, Okehampton, Devon, England
- North Goonbarrow pit, Bugle, Hensbarrow Moor, Cornwall, England
- Old Gunnislake mine, Calstock, Cornwall, England
- Penberthy Croft mine, St. Hilary, Cornwall, England
- St. Michael's Mount, Marazion, Cornwall, England
- Stenna Gwyn Mine, St. Austell, Cornwall, England
- Stennagwyn mine, St. Stephen-in-Brannel, Cornwall, England
- Tregargus quarry, St. Stephen-in-Brannel, Cornwall, England
- Trelavour Downs, St. Dennis, Cornwall, England
- Tremearne Pegmatite, Breage, Cornwall, England
- Trolvis quarry, Longdowns, Cornwall, England
- Montebras, Soumans, Creuse, Limousin, France
- Trimouns Talc mine, Ariège, Midi-Pyrénées, France
- Artenberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
- Bärensteinbruch quarry, Radautal, Bad Harzburg, Harz Mts, Sachsen, Germany
- Clara mine, Oberwolfach, Baden-Wuerttemberg, Germany
- Daniel mine, Schneeberg, Sachsen, Germany
- Ehrenfriedensdorf, Sachsen, Germany
- Ehrenfriedersdorf, Sachsen, Germany
- Fohberg, Kaiserstuhl, Baden-Wuerttemberg, Germany
- Hechtsberg quarry, Kinzigtal, Baden-Wuerttemberg, Germany
- Horberig, Kaiserstuhl, Baden-Wuerttemberg, Germany
- Karem quarry, Birresborn, Eifel, Germany
- Roßgrabeneck, Kinzigtal, Baden-Wuerttemberg, Germany
- Schneckenstein, Vogtland, Sachsen, Germany
- Steinbissäge, Gremmelsbach, Kinzigtal, Baden-Wuerttemberg, Germany
- Steinbruch, Hinterohlsbach, Kinzigtal, Baden-Wuerttemberg, Germany
- Carrara, Tuscany, Italy
- Mount Vesuvius, Naples, Campania, Italy
- Val Graveglia, Liguria, Italy
- Fuka mine, Bicchu-cho, Kawakami, Okayama Pref., Japan
- Djelisu massif, Osh region, Khodzha-Ochkan river basin, Kyrgyzstan
- Vohemar, Madagascar
- Cerro de Mercado, Durango, Mexico
- Mogok, Ohngaing, Sagaing, Myanmar Republic
- Aris quarry, Windhoek, Namibia
- Watsons Beach, Otago, New Zealand
- Einerkilen, Flåt, Evje, Aust-Agder, Norway
- Evje-Ivedal, Iveland, Aust-Agder, Norway
- Basha Nala, Shigar Valley, near Skardu, Pakistan
- Shengus, Skardu Road, Gilgat, Northern Areas, Pakistan
- Tormiq Valley, Skardu Road, Gilgat, Northern Areas, Pakistan
- Panasqueira mine, Panasqueira, Beira-Beixa, Portugal
- Aldan Shield, Yakutiya, Siberia, Russia
- Dodo mine, Polar Urals, Tyumen Oblast, Russia
- Kovdor massif and Khibina massif, Vuonnemi River, Kola Peninsula, Russia
- Lake Baikal, Siberia, Russia
- Malkanskiy, Transbaikal, Siberia, Russia
- Mt Suolaiv, Lovozero alkaline Massif, Kola Peninsula, Russia
- Puiva, Saranpual, Polar Urals, Russia
- Leadhills-Wanlockhead district, Strathclyde/Dumfries and Galloway, Scotland
- Messina, Transvaal, South Africa
- Palabora mine, Loolekop, Transvaal, South Africa
- Dara-i-Pioz, Alayskiy Range, Garm, Tajikistan
- "Redstone Red Granite"" quarry, Conway, Carroll Co., New Hampshire, USA"
- A.C. Perham mine, West Paris, Oxford Co., Maine, USA
- Allen Mt. prospect, Stoneham, Oxford Co., Maine, USA
- Anderson mine, Mason, Oxford Co., Maine, USA
- B.B.#7 mine, Norway, Oxford Co., Maine, USA
- Barrus Farm locality, Goshen, Hampshire Co., Massachusetts, USA
- Bell Pit, Newry, Oxford Co., Maine, USA
- Bemis Stream prospect, Township D, Franklin Co., Maine, USA
- Bennett & Orchard Pit mines, Buckfield, Oxford Co., Maine, USA
- Berry-Havey mines, Poland, Androscoggin Co., Maine, USA
- Bethel Church, Indiana, USA
- Betts Manganese Mine, Plainfield, Hampshire Co., Massachusetts, USA
- Biermann & Codfish Hill quarries, Bethel, Fairfield Co., Connecticut, USA
- Big Creek - Rush Creek area, Fresno Co., California, USA
- Black Mt spodumene pegmatite prospect, Natrona Co., Wyoming, USA
- Black Mt. mines, Rumford, Oxford Co., Maine, USA
- Bonnet Shores, Narragansett, Washington Co., Rhode Island, USA
- Branchville Mica mine, Branchville, Fairfield Co., Connecticut, USA
- Brooks Hollow Dam, Bear Mountain State Park, Orange Co., New York, USA
- Broome prospect, Newry, Oxford Co., Maine, USA
- Bryant Pond Granite quarry, Woodstock, Oxford Co., Maine, USA
- Bumpus mine, Albany, Oxford Co., Maine, USA
- Catherine Mt. Molybdenite prospect, T10 SD, Hancock Co., Maine, USA
- Chester Mica mines, Chester, Hampden Co., Massachusetts, USA
- Cole mine, Stoneham, Oxford Co., Maine, USA
- Construction Materials Corp. quarry, Tiverton, Newport Co., Rhode Island, USA
- Copper Mt pegmatite district, Fremont Co., Wyoming, USA
- Crooker prospect, Newry, Oxford Co., Maine, USA
- Davis Mica mine, West Bath, Sagadahoc Co., Maine, USA
- Davis pyrite mine, Rowe, Franklin Co., Massachusetts, USA
- Deadmans Canyon pegmatite, El Paso Co., Colorado, USA
- Deer Hill mine, Stow, Oxford Co., Maine, USA
- Diamond Hill/Sneech Pond Copper Mines, Cumberland, Rhode Island, USA
- Dunn mines, Norway, Oxford Co., Maine, USA
- Dunton Quarry etc, Newry Township, Oxford Co., Maine, USA
- E.P. Thomas mine, Phippsburg, Sagadahoc Co., Maine, USA
- Eagle Mine, Bonanza mining district, Saguache Co., Colorado, USA
- Eastman mine, Stow, Oxford Co., Maine, USA
- Eight Mile Park, Eight Mile Park pegmatite district, Fremont Co., Colorado, USA
- Eight-Ball Mica prospect, Rumney, Grafton Co., New Hampshire, USA
- Ellingwood mine, Paris, Oxford Co., Maine, USA
- Emmons mine, Greenwood, Oxford Co., Maine, USA
- Estes mine, Baldwin, Cumberland Co., Maine, USA
- F. Perham prospect, Rumford, Oxford Co., Maine, USA
- Fisher Quarry, Topsham Township, Sagadahoc Co., Maine, USA
- Foote Spodumene Mine, Kings Mountain, Cleveland Co., North Carolina, USA
- Foster Hill prospects, Stoneham, Oxford Co., Maine, USA
- Freeport Granite quarry, Freeport, Cumberland Co., Maine, USA
- G.E. Smith mine, Newport, Sullivan Co., New Hampshire, USA
- General Area, Franklin, Sussex Co., New Jersey, USA
- General Electric mines, Buckfield, Oxford Co., Maine, USA
- George Elliot mine, Rumford, Oxford Co., Maine, USA
- Gillette quarry, Haddam Neck, East Hampton, Middlesex Co., Connecticut, USA
- Goddard Ledge mines, Rumford, Oxford Co., Maine, USA
- Grants Mills, Cumberland, Providence Co., Rhode Island, USA
- Greenlaw mine, Auburn, Androscoggin Co., Maine, USA
- Guy Johnson mine, Albany, Oxford Co., Maine, USA
- Hansen Creek, King Co., Washington, USA
- Harvard Quarry, Greenwood Township, Oxford Co., Maine, USA
- HedgeHog Hill, Peru Township, Oxford Co., Maine, USA
- Himalaya mine, Mesa Grande district, San Diego Co., California, USA
- Hooper Ledge prospect, Paris, Oxford Co., Maine, USA
- Interstate 295 roadcut, Cranston, Providence Co., Rhode Island, USA
- Iron Hill, Cebolla Creek area, Powderhorn, Gunnison Co., Colorado, USA
- Italian Mt. Area, Aspen, Gunnison Co., Colorado, USA
- Jamestown mine, Tuolumne Co., California, USA
- Joe McKeen Mt. locality, Lovell, Oxford Co., Maine, USA
- John Balla mine, South Acworth, Sullivan Co., New Hampshire, USA
- Keith mine, Auburn, Androscoggin Co., Maine, USA
- Keyes Mica mines, Orange, Grafton Co., New Hampshire, USA
- King Lithia Mine, Keystone, Pennington Co., South Dakota, USA
- Kinglet prospect, Newry, Oxford Co., Maine, USA
- LaChance mine, Brunswick, Cumberland Co., Maine, USA
- LCA mine, Bessermer City, Gaston Co., North Carolina, USA
- Litchfield Sodalite locality, Litchfield, Kennebec Co., Maine, USA
- Little Deer Hill prospect, Stow, Oxford Co., Maine, USA
- Little Green Monster Mine/Clay Canyon, Fairfield, Utah Co., Utah, USA
- Little Singepole Mt. prospects, Paris, Oxford Co., Maine, USA
- Little Three mine, Ramona district, San Diego Co., California, USA
- Lobikis mine, Peru, Oxford Co., Maine, USA
- local Quarries, Haddam, Middlesex Co., Connecticut, USA
- Lord Hill mine, Stoneham, Oxford Co., Maine, USA
- Maine Feldspar mine, Auburn, Androscoggin Co., Maine, USA
- Manton Avenue quarry, Providence, Providence Co., Rhode Island, USA
- Manville quarry, Cumberland, Providence Co., Rhode Island, USA
- Martin mine, Newry, Oxford Co., Maine, USA
- Martin Prospect, Newry, Maine, USA
- Mazatzal Mts., Four Peaks, Maricopa Co., Arizona, USA
- Meeper Mine, Pisgah National Forest, Buncombe Co., North Carolina, USA
- Melrose Farm Beryllonite prospects, Stoneham, Oxford Co., Maine, USA
- Meyers Ranch, McGuffey Area, Park Co., Colorado, USA
- mica Lode/Meyers/School Section Mines/etc, Royal Gorge Area, El Paso Co., Colorado, USA
- Mt Marie mines, Paris, Oxford Co., Maine, USA
- Mt Mica mine, Paris, Oxford Co., Maine, USA
- Mt. Rubellite mines, Hebron, Oxford Co., Maine, USA
- Mud mine, Alexandria, Grafton Co., New Hampshire, USA
- Nason mine, Batchelder's Grant, Oxford Co., Maine, USA
- near Auburn, Maine, USA
- Nevel mine, Newry, Oxford Co., Maine, USA
- New Cornelia Mine, Ajo, Pima Co., Arizona, USA
- Northumberland Mine, Toquima Range Area, Nye Co., Nevada, USA
- Noyes Mountain, Greenwood Township, Oxford Co., Maine, USA
- Nubble mine, Greenwood, Oxford Co., Maine, USA
- Ohtonens mine, Greenwood, Oxford Co., Maine, USA
- Organ Mts, Dona Ana Co., New Mexico, USA
- Orman McAllister mine, Lovell, Oxford Co., Maine, USA
- Palermo Nr 1 mine, North Groton, Grafton Co., New Hampshire, USA
- Pattuck mine, Alexandria, Grafton Co., New Hampshire, USA
- Peabody Pond Granite quarry, Naples, Cumberland Co., Maine, USA
- Pechnick prospect, Rumford, Oxford Co., Maine, USA
- Perry Petalite prospect, Peru, Oxford Co., Maine, USA
- Pingree Ledge mine, Albany, Oxford Co., Maine, USA
- Porcupine Hill mine, Topsham, Sagadahoc Co., Maine, USA
- Pownal Granite quarry, Pownal, Cumberland Co., Maine, USA
- Pulsifer mine & Dionne extension, Auburn, Androscoggin Co., Maine, USA
- Ragged Jack Mt. Chrysoberyl locality, Sumner, Oxford Co., Maine, USA
- Ray Mica Mine, Yancey Co., North Carolina, USA
- Redstone Granite quarry, Westerly, Washington Co., Rhode Island, USA
- Ridgefield, Fairfield Co., Connecticut, USA
- Rossie lead mines, St. Lawrence Co., New York, USA
- Roy Granite quarry, Oxford, Oxford Co., Maine, USA
- Roy mine, Rumford, Oxford Co., Maine, USA
- Royal Gorge Area, Fremont Co., Colorado, USA
- Ruggles Mine, Grafton Center, Grafton Co., New Hampshire, USA
- Rumford Falls locality, Rumford, Oxford Co., Maine, USA
- Ryerson Hill mines, Paris, Oxford Co., Maine, USA
- Scotty Mine, Newry Township, Oxford Co., Maine, USA
- Scribner Ledge mine, Albany, Oxford Co., Maine, USA
- Sedalia Copper Mine, Sedalia, Chaffee Co., Colorado, USA
- Smith Granite quarry, Westerly, Washington Co., Rhode Island, USA
- Songo Pond mine, Albany, Oxford Co., Maine, USA
- Square Pit, Topsham, Sagadahoc Co., Maine, USA
- Starrett mines, Warren, Knox Co., Maine, USA
- Sterling Hill and Franklin Furnace, Sussex Co., New Jersey, USA
- Strickland quarry, Middlesex Co., Connecticut, USA
- Sullivan Granite quarry, Bradford, Westerly, Washington Co., Rhode Island, USA
- Summit Rock, Douglas Co., Oregon, USA
- Swan Prospect, Pisgah National Forest, Buncombe Co., North Carolina, USA
- Swanson quarry, East Hampton, Middlesex Co., Connecticut, USA
- Sweet Home Mine, Alma District, Park Co., Colorado, USA
- Tamminen mine, Greenwood, Oxford Co., Maine, USA
- The-Hole-In-The-Ground mine, Auburn, Androscoggin Co., Maine, USA
- Thomas Mine, Pisgah National Forest, Buncombe Co., North Carolina, USA
- Three Peaks, Cedar City, Utah, USA
- Tiger Bill Quarries, Greenwood Township, Oxford Co., Maine, USA
- Tilcon Capaldi quarry, Acushnet, Bristol Co., Massachusetts, USA
- Tip Top pegmatite, Custer Co., South Dakota, USA
- Trumball Peak, Mariposa Co., California, USA
- Turner mine, Auburn, Androscoggin Co., Maine, USA
- Virginia Lake prospect, Stoneham, Oxford Co., Maine, USA
- Wade mine, Auburn, Androscoggin Co., Maine, USA
- Waisanen mine, Greenwood, Oxford Co., Maine, USA
- Walden Gem mine, Portland, Middlesex Co., Connecticut, USA
- Warren Nickel prospect, Warren, Knox Co., Maine, USA
- Washington, Litchfield Co., Connecticut, USA
- Watson's Pier, Narragansett, Washington Co., Rhode Island, USA
- Wentworth mine, Hartford, Oxford Co., Maine, USA
- White Mt. Batholith Pegmatite District, Carroll Co., New Hampshire, USA
- Whitecap Mt. localities, Rumford, Oxford Co., Maine, USA
- Whitehall mine, Rumford, Oxford Co., Maine, USA
- Willis Warren mine, Stoneham, Oxford Co., Maine, USA
- Fron Oleu (Prenteg), Tremadog, Gwynedd, Wales
- Kipushi mine, Lubumbashi, Shaba, Zaire
Bibliografía y más información
- American Mineralogist, vol. 74, p.870, (1989)
- American Mineralogist, vol. 80, p.329-335, (1995)
- Acta Crystallographica, vol. B47, p.683(s), (1991)
- American Mineralogist, vol. 75, p.295, (1990)
- American Mineralogist, vol. 76, p.1857, (1991)