Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Tangeite: CaCu(VO4)(OH)
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
Tarbuttite: Zn2(PO4)(OH)
Comments: Clear, prismatic crystal of tarbuttite on matrix. Location: Broken Hill Mine, Kabwe, Central Zambia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tavorite: LiFe+++(PO4)(OH)
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
Tellurium: Te
Comments: Crystalline native tellurium on quartz. Location: Rosia Montana (Verespatak), Transylvania, Romania. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tetranatrolite: Na2[Al2Si3O10]·2(H2O) Gonnardite: Na2CaAl4Si6O20·7(H2O)
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
Tetrawickmanite: Mn++Sn++++(OH)6
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
Thorianite: ThO2
Comments: Thorianite penetration twin. Location: Huddersfield, Quebec, Canada. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tilasite: CaMg(AsO4)F
Comments: Brownish, prismatic crystals of tilasite. Location: Cervandone, Val d'Ossola Lombardy, Italy. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tiptopite: K2(Na,Ca)2Li3Be6(PO4)6(OH)2·(H2O) Montgomeryite: Ca4MgAl4(PO4)6(OH)4·12(H2O)
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
Trechmannite: AgAsS2
Comments: Dark red, trigonal pyramid crystal of trechmannite on dolomite. Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tridymite: SiO2
Comments: Clear, pseudohexagonal crystals of tridymite on matrix. Location: Bellerberg quarry, Laacher See, Rhineland-Palatinate, Germany. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tschernichite: (Ca,Na)(Si6Al2)O16·4-8(H2O)
Comments: Clear crystal of tschernichite in a vug. Location: Goble, Colombia County, Oregon, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tsumcorite: PbZnFe++(AsO4)2·(H2O)
Comments: Yellow tsumcorite crystalline rosettes on matrix. Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tsumebite: Pb2Cu(PO4)(SO4)(OH)
Comments: Green crystalline aggregates of tsumebite on matrix. Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tuhualite: [ ](Na,K)Fe++Fe+++[Si6O15]
Comments: Black, tabular crystals of tuhualite on matrix. Location: Opo Bay, Mayor Island, New Zealand. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tunellite: SrB6O9(OH)2·3(H2O)
Comments: Clear, prismatic crystals of tunellite on matrix. Location: Death Valley, Inyo County, California, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Turquoise: CuAl6(PO4)4(OH)8·4(H2O)
Comments: Blue, triclinic crystals (rare) of turquoise on matrix. Location: Lynch Station, Campbell County, Virginia, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Tyrolite: CaCu5(AsO4)2(CO3)(OH)4·6(H2O)
Comments: Blue, crystalline aggregates of tyrolite on matrix. Location: Lake Serene mine, Index, Snohomish County, Washington, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Uranophane-beta: Ca[(UO2)SiO3(OH)]2·(H2O)
Comments: Bright yellow uranophane-beta crystalline aggregates. Location: Rossing mine, Rossing, Namibia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Vauxite: Fe++Al2(PO4)2(OH)2·6(H2O) Sigloite: Fe+++Al2(PO4)2(OH)3·5(H2O)
Comments: Lime green, crystalline aggregate of sigloite on massive, blue vauxite. Location: Llallagua, Potosi Department, Bolivia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals