Taaffeite   Magnesiotaaffeite-2N2S

Comments: Faucetted purple magnesiotaaffeite. These specimens are very rare and un-cut samples ever rarer..
Location: Ceylon gem gravels, Ratnapura, Sri Lanka. Scale: See Image.
© Dave Barthelmy

Tacharanite   Phillipsite

Comments: Spherical tacharanite aggregates on phillipsite crystals.
Location: Espalion, Aveyron, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tachyhydrite

Comments: Translucent pink tinted granular tachyhydrite.
Location: Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taenite   Troilite   Cohenite   Kamacite

Comments: Brown masses of troilite, with white cohenite, in kamacite/taenite matrix, in meteorite (polished section).
Location: Meteor Crater, Canyon Diablo, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taenite   Kamacite   Troilite

Comments: Polished and acid etched slice, with crust, illustrating Widmanstaaten lines, with taenite darker areas between kamacite crystals, with tarnished troilite inclusions, in fine octahedrite meteorite.
Location: Gibeon Meteorite, found 1836, Great Namaqualand, Hardap, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taenite

Comments: Massive taenite, altering, intermixed with kamacite, in meteorite.
Location: Agtalilik Meteorite, Melville Bay, Greenland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taimyrite   Atokite

Comments: Photomicrograph (oil immersion) of atokite and taimyrite intergrowth inside tetraauricupride reaction rim on Pt-Fe alloy. Outlined section shows atokite relics within taimyrite. (CanMin, v 42, p 610).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia,. Scale: See Image.
© Canadian Mineralogist

Tainiolite

Comments: Micaceous tainiolite aggregate.
Location: Magnet Cove, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Takedaite

Comments: Translucent granular takedaite.
Location: Fuka, Okayama, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Takeuchiite

Comments: Aggregates of black prismatic takeuchiite crystals.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Takovite

Comments: Aqua-colored takovite on rock.
Location: Carr-Boyd Nickel Mine, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Talc

Comments: White Talc pseudomorphous after quartz.
Location: Johannezeche, Bavaria, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Talmessite

Comments: Pale green, crystalline aggregates of talmessite on reddish, hematite-stained calcite.
Location: Ourlil, Bou Azzer, Anti Atlas Mts., Morocco. Scale: Crystal size 4 mm.
© John Veevaert

Talmessite

Comments: Translucent nearly colorless talmessite microcrystals.
Location: Old Gold Hill Mine, Tooele County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Talmessite

Comments: Vivid pink-colored talmessite crystalline aggregates scattered on matrix.
Location: Bou Azzer, Morocco. Scale: Picture size 2 cm.
© Sandro Maggia/Minernet.it

Talnakhite

Comments: Tarnished brown talnakhite with brassy chalcopyrite.
Location: Talnakh Deposit, Norilsk, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tamarugite   Blodite

Comments: Clear, yellow bl?dite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Tamarugite   Metasideronatrite

Comments: Orange metasideronatrite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Tamarugite

Comments: Small white flakes of Tamarugite.
Location: Carola Mine, Freital, near Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Taneyamalite

Comments: Dark brown silky fibrous taneyamalite vein in manganese ore.
Location: Taneyama Mine, Toyo, Kumamoto, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tangeite

Comments: Green. rosette crystalline-aggregates of tangeite on sandstone matrix.
Location: Thompson, Grand County, Utah, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tantalcarbide

Comments: Dark gray metallic tantalcarbide grains in sand.
Location: Nizhnii Tagil Massif, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taramellite

Comments: Dark brown crystalline taramellite.
Location: Candoglia, Domo d'Ossola, Val Toce, Piedmonte, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taramite

Comments: Taramite, variety mboziite, black microcrystal prisms in quartz.
Location: Foyaite Dike, Mbozi Syenite-Gabbro Complex, 50 miles south of Mbeya, Mbeya, Tanzania. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Taranakite

Comments: Bright white chalky powdery taranakite mass.
Location: South Farallon Island, near San Francicso, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tarapacaite

Comments: Pale brown translucent tarapacaite, deliquescent granular.
Location: Tarapaca, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tarbuttite

Comments: Clear, prismatic crystal of tarbuttite on matrix.
Location: Broken Hill Mine, Kabwe, Central Zambia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tarkianite

Comments: A euhedral grain of tarkianite associated with sperrylite (Sp) in heavy-mineral concentrate. Plane-polarized light, oil immersion, sample 2_72_6.
Location: Sulfide concentrate from Hitura Ni-Cu-PGE mine, Nivala, western central Finland. Scale: See Scale Bar.
© Canadian Mineralogist

Tatyanaite   Rustenburgite

Comments: Back-scattered electron images showing inclusions of rustenburgite intergrown with taimyrite-tatyanaite aggregates. (AmMin, v 42, p 608).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image.
© American Mineralogist

Tausonite

Comments: Brown crystal of tausonite in matrix.
Location: Murun massif, Chara River, Davan, Torgo River Basin, Aldan Shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Tavorite

Comments: Tabular, prismatic crystals of tavorite on matrix.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tavorite   Hureaulite

Comments: Lime green tavorite micro crystals with pink, gemmy hureaulite.
Location: Tip Top mine, Custer Co., South Dakota, United States. Scale: Picture size 1.0 cm.
© Tom Loomis / Dakota Matrix

Tazheranite

Comments: Brown grain of tazheranite in matrix.
Location: Tazheran Massif, Lake Baikal area, Irkutskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Teallite

Comments: Gray, metallic vein of coarsely crystalline teallite.
Location: Carguaycollo mine (type locality), Potos? , Bolivia. Scale: 4.5x4x2.5 cm.
© Fabre Minerals

Teepleite

Comments: Tan bladed crystals teepleite on massive halite.
Location: Borax Lake, Lake County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tegengrenite

Comments: Red, pseudo-octahedral crystal of tegengrenite in quartz.
Location: Jakobsberg, Nordmark, Filipstad, V?rmland, Sweden. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Telargpalite   Oulankaite   Tulameenite   Chalcopyrite

Comments: Gray long-prismatic crystal of oulankaite with light grayish telargpalite and pale yellowish-white rims of tulameenite in massive yellowish chalcopyrite. Polished section (from microprobe analysis) in reflected light.
Location: Lukkulaisvaara ultrabasic Massif, Olanga (Oulanka) River, Oulanka plutonic complex, Karelia Republic, Northern Region, Russia. Scale: Picture size 0.12 mm.
© Thomas Witzke / Abraxas-Verlag

Tellurantimony   Mattagamite   Altaite

Comments: Silvery metallic intergrowths of mattagamite with tellurantimony and altaite.
Location: Mattagami Lake Mine, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tellurite   Denningite

Comments: Vitreous colorless to very pale yellowish elongated crystals denningite with yellow tellurite.
Location: Bambolla Mine, Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Tellurite

Comments: Scaly yellow tellurite on white quartz.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tellurium

Comments: Crystalline native tellurium on quartz.
Location: Rosia Montana (Verespatak), Transylvania, Romania. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tellurium   Empressite

Comments: Bronze-colored microcrystals of empressite with bright native tellurium crystals.
Location: Rex mine, Boulder County, Colorado, USA. Scale: 1.9 x 1.4 x 0.7 cm.
© Richard Dale / Dale Minerals

Tellurobismuthite

Comments: Platy hexagonal metallic crystals of tellurobismuthite to 3+ mm. in matrix.
Location: Boliden, Skellefte?, V?sterbotten, Sweden. Scale: 2.7x1.6x0.7 cm.
© Richard Dale / Dale Minerals

Tellurobismuthite

Comments: Metallic tellurobismuthite crystal fragment.
Location: Boliden, Vasterbotten, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Telluropalladinite   Kotulskite   Keithconnite

Comments: Polyphase grain of (1) ferroan platinum corroded by (2) Pt(Fe,Cu) and overgrown by (5) telluropalladinite, an unknown (6) Pd-Te-Fe-Si-O phase, (7) Fe-hydroxide and (8) a Ca-Mn-Fe silicate with inclusions of (3) kotulskite and (4) keithconnite. (BGR).
Location: Stream sediments of rivers in the vicinity of the original discovery of the Merensky Reef on the farm Maandagshoek close to Burgersfort in the Eastern Bushveld, South Africa.. Scale: See Image.
© Federal Institute for Geosciences and Natural Resources

Temagamite   Borovskite   Merenskyite

Comments: Borovskite (Bvk) - temagamite (Tmg) - merenskyite (Mrk) composite grain included in chalcopyrite (Ccp). (CanMin, v 42, p 674).
Location: McBratney high-grade PGE-Au occurrence, Bear Lake mafic unit, Proterozoic Flin Flon greenstone belt, Manitoba, Canada. Scale: See Image.
© Canadian Mineralogist

Tennantite   Calcio-andyrobertsite-1M

Comments: Vein of blue calcioandyrobertsite in massive dark gray tennantite. The vein of calcioandyrobertsite extends for 0.8cm.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Specimen size 1.1 x 0.5 cm.
© John Veevaert

Tennantite

Comments: Crystals of dark gray tennantite on white quartz.
Location: Concepcion del Oro, Zacatecas, Mexico. Scale: 6 x 5.5 cm.
© Fabre Minerals

Tennantite   Schaurteite

Comments: Bright white silky fibrous schaurteite on dark tennantite.
Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tennantite

Comments: Micro-quartz coated, dark gray tennantite on quartz. Former Sussman Tsumeb specimen.
Location: Tsumeb, Namibia. Scale: Crystal size 5 cm.
© John Schneider

Tenorite   Chrysocolla

Comments: Lustrous black botryoidal Tenorite mostly covering a sky-blue massive chrysocolla matrix.
Location: 79 mine, Banner district, Pinal Co., Arizona. Scale: 5.5 x 3 cm.
© Dan Weinrich

Tephroite

Comments: Sharp crystals of tephroite to 1.2 cm across.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: Picture size 5 cm.
© John Veevaert

Tephroite   Ericssonite   Orthoericssonite

Comments: Dark brown ericssonite, intergrown with orthoericssonite, with pink rhodonite, light brown diopside (var. schefferite) and gray tephroite.
Location: Langban, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tephroite   Johnbaumite

Comments: Violet crystalline massive johnbaumite with brown tephroite.
Location: Jacobsberg, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Terlinguacreekite

Comments: Reddish brown crystalline aggregates of eglestonite? or montroydite? in calcite matrix covered with yellow crusts of terlinguacreekite.
Location: Mariposa Mine, Terlingua, Brewster County, Texas, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species

Terlinguaite

Comments: Beige, massive granular crystals of terlinguaite on pink calcite.
Location: Mariposa mine, Terlingua, Terlingua district, Brewster Co., Texas, USA. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ternesite

Comments: Pale blue crystalline ternesite.
Location: Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Terskite

Comments: Pale violet terskite fragment.
Location: Mount Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tertschite

Comments: Bright white fibrous powdery tertschite.
Location: Kurtpinari Mine, Faras, Balikesir, Turkey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Teruggite

Comments: Opaque rounded teruggite aggregate.
Location: Loma Blanca, Jujuy, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tetra-auricupride

Comments: Golden brown crystals of tetra-auricupride on matrix.
Location: Karabash (Karabasch), Chelyabinsk Oblast', Urals Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Tetradymite

Comments: Gray metallic foliated tetradymite in quartz.
Location: Mangfallberg, Boliden, Vasterbotten, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tetrahedrite

Comments: A very brilliant tetrahedrite group with the tops of the crystals covered in chalcopyrite.
Location: Casapalca, Lima, Peru. Scale: 8 x 6 cm.
© Fabre Minerals

Tetrahedrite

Comments: Bright sharp metallic tetrahedrite crystals to 1 cm in size on pinkish to colorless crystalline calcite matrix.
Location: Cavnic (Kapnik), Maramures, Romania. Scale: 14 x 11 x 3 cm.
© Dan Weinrich

Tetranatrolite   Gonnardite

Comments: White, pseudocubic crystals of tetranatrolite (gonnardite) on matrix.
Location: Point of Rocks Mesa, Colfax County, New Mexico, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tetrarooseveltite

Comments: Light-yellow, earthy tetrarooseveltite.
Location: Moldava, Teplice (Teplitz), Krusn? Hory (Erzgebirge), Severocesk? Kraj, Bohemia, Czech Republic. Scale: Picture size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag

Tetrawickmanite

Comments: Tan, pseudoctahedral crystal of tetrawickmanite on matrix.
Location: Foote mine, Kings Mountain, Cleveland County, North Carolina, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Thalenite-(Y)

Comments: Subhedral, brownish thalenite-(Y) crystal embedded in a sucrosic matrix of yttrian fluorite.
Location: Hundholmen, Tysfjord, Norway. Scale: 0.5 cm.
© Sigurd Stordal / University of Tromsoe

Thalfenisite

Comments: Polished 2mm fragment of thalfenisite in epoxy mount..
Location: Oktyabr'sky mine, Noril'sk, Siberia, Russia. Scale: 1.2cm across.
© Tom Loomis / Dakota Matrix

Thaumasite

Comments: Doubly-terminated Thaumasite.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 1 cm across.
© John Veevaert

Thaumasite

Comments: Transparent crystal of thaumasite.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 1.1 x 0.4 cm.
© John Veevaert

Theisite

Comments: Pale blue pearly theisite scattered on matrix.
Location: Grand Junction, Mesa County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thenardite

Comments: White thenardite on augite-nephelinite rock.
Location: B?renstein Quarry, Niederschlag, Oberwiesenthal, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Theophrastite   Chromite

Comments: Green pearly scaly theophrastite coatings on massive dark chromite.
Location: Vermion Region, near Thessaloniki, Kedriki Makedhonia, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thermonatrite   Nacaphite

Comments: Sparse pale yellow-brown microcrystal and crystalline nacaphite with white thermonatrite on a dark matrix.
Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thermonatrite

Comments: Granular thermonatrite.
Location: Eruption of 1859, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thomasclarkite-(Y)

Comments: Transparent, yellowish crystal of thomasclarkite-(Y).
Location: Mt. St. Hilaire, Quebec, Canada. Scale: 0.75 mm.
© John Veevaert

Thometzekite

Comments: Pale olive-green colored thometzekite crusts on quartz.
Location: Moldovo. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thomsenolite   Cryolite

Comments: Massive, white cryolite with solution cavities lined with prismatic Thomsenolite crystals.
Location: Ivigtut, Greenland. Scale: .
© John Veevaert

Thomsonite-Ca   Stilbite-Ca

Comments: Peach colored stilbite crystals to 3.5 cm in size is hosting two finely crystallized balls of powdery white thomsonite.
Location: Near Jalgaon, Maharashtra State, India. Scale: Picture size 15 cm.
© Dan Weinrich

Thoreaulite

Comments: Yellow thoreaulite grain.
Location: Ognevka Ta Deposit, Kalba Range, Shyghys Qazaqstan Oblysy (Vostochno-Kazakhstanskaya [Eastern-Kazakhstan] Oblast'), Kazakhstan. Scale: Grain size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Thorianite

Comments: Thorianite penetration twin.
Location: Huddersfield, Quebec, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Thorikosite

Comments: Yellow, prismatic crystals of Thorikosite on matrix.
Location: Passa Limani Cove slag locality, Passa Limani area, Lavrion District, Attik? (Attica; Attika) Prefecture, Greece. Scale: Picture size 1.6 mm.
© Thomas Witzke / Abraxas-Verlag

Thorite

Comments: Brown crude crystal of thorite var. uranothorite with still visible termination on both ends. Mildly radioactive.
Location: Kemp Uranium Mine, Cheddar, Cardiff Township, Haliburton Co., Ontario, Canada. Scale: 15x14x13 mm.
© John Betts - Fine Minerals

Thorite

Comments: Several small, black cubic crystals of thorite.
Location: Balangoda, Ratnapura, Sabaragamuwa province, Sri Lanka. Scale: Picture size 0.8 cm.
© Paul M. Schumacher

Thornasite

Comments: Opaque thornasite microcrystals.
Location: DeMix-Varennes Quarry, Saint Amable Sill, Varennes, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thorogummite

Comments: Yellow-tan resinous thorogummite with calcite.
Location: Fort Dauphin, Toliara, Madagascar. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thorogummite

Comments: Pale tan to yellowish thorogummite pseudomorphous after thorite in matrix.
Location: Fort Dauphin (T?lanaro) area, Toliara (Tul?ar) Province, Madagascar. Scale: Picture size 5 mm.
© Paul M. Schumacher

Thortveitite

Comments: Small white prismatic crystals of thortveitite on matrix.
Location: A4 highway tunnel, Thiemendorf, K?nigshain, Oberlausitz, Saxony, Germany. Scale: Picture size 1.7 mm.
© Thomas Witzke / Abraxas-Verlag

Threadgoldite

Comments: Beige threadgoldite filling cracks in, and coating, black uraninite. Schumacher Collection.
Location: Kobokobo Pegmatite, Lusungu River District, Kivu, Congo (Za?re). Scale: Picture size 5 mm.
© Paul M. Schumacher

Tiemannite

Comments: Dull black tiemannite masses on limestone.
Location: Marysvale, Piute County, Utah. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tiemannite

Comments: Dull steel-gray, tetragonal crystals of tiemannite to 0.5mm with modifications and striations, slight purple tinge.
Location: Rio Blanco, Pinal De Arvole, Atriagu, Queretare, Mexico. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Tienshanite   Cesium-kupletskite

Comments: Dark olive-green colored crystalline tienshanite with cesium-kupletskite in microcline.
Location: Dara-Pioz, Tien-Shan, Tadzhikistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tikhonenkovite

Comments: Colorless tikhonenkovite grain.
Location: Karasug Fe-REE-barite-fluorite Deposit, Tannu-Ola Range, Tuva Republic, Eastern-Siberian Region, Russia. Scale: Grain length 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Tilasite

Comments: Brownish, prismatic crystals of tilasite.
Location: Cervandone, Val d'Ossola Lombardy, Italy. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tilleyite

Comments: Opaque white fibrous tilleyite with blue calcite.
Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tin

Comments: Stream rounded silvery metallic tin grains.
Location: Near Oban, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tin   Sorosite   Stistaite

Comments: Back-scattered electron image of large sorosite crystal (So=partly skeletal) adjacent to stistaite (St). Tn=native tin. Note abundant microcrystals of sorosite isolated within native tin. (AmMin 83:903).
Location: Baimka gold-platinum group mineral placer deposit, Chukotka, Russian Far East. Scale: Image Size 1.5 cm.
© American Mineralogist

Tinaksite   Charoite

Comments: Yellow-brown prismatic tinaksite crystals in purple charoite with black aegirine.
Location: Murun, Aldan Uplift, Chara and Olekma Rivers, near Olekminsk, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tinaksite   Charoite

Comments: Polished slab of deep purple chariote with inclusions of black augite, white feldspar and orange tinaksite.
Location: Murun, Siberia, Russia. Scale: Picture size 10 cm.
© Kevin Ward

Tincalconite

Comments: Pristine white tincalconite pseudomorph after a single borax crystal.
Location: Boron, Kramer District, Kern Co., California, USA. Scale: 30x14x5 mm.
© John Betts - Fine Minerals

Tinsleyite   Phosphosiderite   Rockbridgeite

Comments: Violet botryoidal tinsleyite on bluish-purple botryoidal phosphosiderite on dark, massive rockbridgeite.
Location: Bendada, Guarda, Portugal. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tinticite

Comments: Porcelaneous tinticite chip.
Location: Near Tintic Standard Mine, Tintic District, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tinzenite

Comments: Orange crystalline tinzenite with quartz and black braunite.
Location: Cassagne mine, near Chiavari, Liguria, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tinzenite

Comments: Orange bladed aggregate of tinzenite crystals and clear quartz.
Location: Molinello mine, Val Graveglia, Italy. Scale: 5.8x3.6x3.3 cm.
© Richard Dale / Dale Minerals

Tiptopite   Montgomeryite

Comments: Clear, acicular crystals of tiptopite with red montgomeryite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Tiptopite   Englishite   Montgomeryite

Comments: Red montgomeryite lath-like crystals to 1mm in 2mm rosettes associated with clear, acicular sprays of tiptopite to 0.75mm and white cottonball-like crystals of englishite to 0.2mm.
Location: Tip Top mine, Custer Co., South Dakota, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Tiragalloite

Comments: Orange crystals of tiragalloite in matrix.
Location: Molinello Mine, Val Graveglia, Liguria, Italy. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Tisinalite

Comments: Yellow tisinalite in syenite pegmatite matrix.
Location: Mount Alluaiv, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Titanite

Comments: Several twinned green crystals of Titanite (sphene) on matrix.
Location: Capelinha, Minas Gerais, Brazil. Scale: 5.5x5x3.5 cm.
© Isaias Casanova / IC Minerals

Titanite   Amesite

Comments: Green titanite (sphene) crystals on purple chromamesite (clinochlore?).
Location: Saranovskaya Deposit, Middle Ural Mountains, Russia. Scale: Picture size 7 cm.
© Dave Barthelmy

Titanowodginite

Comments: Black crystals of titanowodginite in matrix.
Location: Tanco Mine (Bernic Lake Mine), Bernic Lake, Lac-du-Bonnet area, Manitoba, Canada. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Titantaramellite

Comments: Dark brownish black titantaramellite crystal in quartz.
Location: Rush Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tlalocite

Comments: Green, spherulitic aggregates of Tlalocite on matrix.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Tlapallite

Comments: Green, microcrystalline druse of tlapallite grains.
Location: Bambollita Mine (Oriental Mine), Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Tobelite

Comments: Fine grained massive tobelite.
Location: Tobe, Ehime, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tobermorite

Comments: Bright white tobermorite with blue calcite, USA.
Location: Crestmore Quarry, Riverside County, California. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tochilinite

Comments: Grayish-black, metallic wires of tochilinite on matrix.
Location: Brosso Mine, Ivrea, Piedmont, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Todorokite   Opal

Comments: Dendritic todorokite in white opal.
Location: Brosso Mine, Ivrea, Torino, Piemonte, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tokkoite   Charoite

Comments: Yellow crystalline tokkoite intermixed with purple charoite (viewed cross-sectional to fiber direction).
Location: Murun, Aldan, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tokyoite

Comments: Metallic reddish brown crystals of tokyoite (< 0.3 mm) on dark gray braunite matrix.
Location: Gambatesa mine, Graveglia Valley,, Genova, Italy. Scale: Picture size 4 mm.
© Tom Loomis / Dakota Matrix

Tolbachite

Comments: Small orange-brownish crystals of tolbachite.
Location: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag