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.
Tennantite: (Cu,Fe)12As4S13
Comments: Crystals of dark gray tennantite on white quartz. Location: Concepcion del Oro, Zacatecas, Mexico. Scale: 6 x 5.5 cm. © Fabre Minerals
Tennantite: (Cu,Fe)12As4S13 Schaurteite: Ca3Ge++++(SO4)2(OH)6·3(H2O)
Comments: Bright white silky fibrous schaurteite on dark tennantite. Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tennantite: (Cu,Fe)12As4S13 Calcioandyrobertsite-1M: KCaCu5(AsO4)4[As(OH)2O2]·2(H2O)
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
Tenorite: CuO Chrysocolla: (Cu,Al)2H2Si2O5(OH)4·n(H2O)
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: Mn2SiO4 Ericssonite: BaMn++2Fe+++O[Si2O7](OH) Orthoericssonite: BaMn2(Fe+++O)Si2O7(OH)
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: Mn2SiO4 Johnbaumite: Ca5(AsO4)3(OH)
Comments: Violet crystalline massive johnbaumite with brown tephroite. Location: Jacobsberg, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tephroite: Mn2SiO4
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
Terlinguacreekite: Hg++3O2Cl2
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: Hg+Hg++ClO
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: Ca5(SiO4)2SO4
Comments: Pale blue crystalline ternesite. Location: Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Terranovaite: (Na,Ca)8(Si68Al12)O160·29(H2O)
Comments: B&W image of terranovaite crystal. (AmMin, v82:423). Location: Jurassic Ferrar dolerites of Mt. Adamson, Northern Victoria Land, Antarctica. Scale: See Image. © American Mineralogist