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Tomichite: (V,Fe)4Ti3AsO13(OH)
Comments: Section of drill core with a very rare crystal of tomichite to 1mm. Location: Hemlo Gold mine, Ontario, Canada. Scale: Core size 2.5 cm. © Tom Loomis / Dakota Matrix
Tongxinite: Cu2Zn
Comments: Tiny nugget with sorosite in a geletin capsule. Location: Newjansk, Ural, Russia. Scale: Not given. © Diederik Visser
Tooeleite: Fe+++6(AsO3)4(SO4)(OH)4·4H2O
Comments: SEM photograph of typical tooeleite crystal terminations. MinMag v56:71. Location: U.S. Mine, Tooele Country, Utah. USA. Scale: Scale Bar 50 µm. © Mineralogical Magazine
Topaz: Al2SiO4(F,OH)2
Comments: Transparent sharp gem topaz crystal set upon a matrix of crystallized white albite and silvery muscovite. Location: Yunu Village, Shigar, Gilgit division, Pakistan. Scale: 1.6 x 1.8 x 4.2 cm. © Dan Weinrich
Torbernite: Cu(UO2)2(PO4)2·8-12(H2O)
Comments: Bright green platy crystals of torbernite on matrix. Location: Musonoi Mine, Shaba, Zaire. Scale: 7x5x5 cm. © Isaias Casanova / IC Minerals
Comments: Cluster of green torbernite crystals. Radioactive. Location: Margabal Mine, Entraygues-sur-Truyère, Aveyron, Midi-Pyrénées, France. Scale: 22x13x10 mm. © John Betts - Fine Minerals
Tornebohmite-(Ce): (Ce,La,Nd)2Al(SiO4)2(OH)
Comments: Vein of dark green tornebohmite-(Ce) with selveges of black allanite-(Ce) in a K-feldspar matrix. Location: Jamestown District, Boulder Co., Colorado, USA. Scale: Specimen Size 6.5 x 3.8 x 2.5 cm. © Rob Lavinsky
Torreyite: (Mg,Mn)9Zn4(SO4)2(OH)22·8(H2O)
Comments: Whitish translucent granular torreyite. Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tosudite: Na0,5(Al,Mg)6(Si,Al)8O18(OH)12·5(H2O)
Comments: Fine grained massive tosudite. Location: Takatama Mine, Fukushima, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tounkite: (Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O)
Comments: Light yellow-green crystalline tounkite with dark lazurite in matrix. Location: Malobystrinskoje, Baikal, Russia. Scale: Not Given. © Diederik Visser