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Tapiolite-(Mn): (Mn++,Fe++)(Ta,Nb)2O6 Tapiolite: (Fe,Mn)(Ta,Nb)2O6
Comments: Black opaque resinous massive manganotapiolite. Location: Skogbole Mine, Kimito, Turku ja Pori, Finland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Taramellite: Ba4(Fe+++,Ti,Fe++,Mg)4(B2Si8O27)O2Clx (x=0 to 1)
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: Na(CaNa)Fe++3AlFe+++[Si6Al2O22](OH)2
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: K3Al5(HPO4)6(PO4)2·18(H2O)
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: K2CrO4
Comments: Pale brown translucent tarapacaite, deliquescent granular. Location: Tarapaca, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Taseqite: Na12Sr3Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2
Comments: Crystalline magenta-colored taseqite in matrix. Location: Kukisvumchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 0.3 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Teepleite: Na2B(OH)4Cl
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
Tellurite: TeO2
Comments: Scaly yellow tellurite on white quartz. Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tellurobismuthite: Bi2Te3
Comments: Metallic tellurobismuthite crystal fragment. Location: Boliden, Vasterbotten, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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