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Trippkeite: CuAs+++2O4
Comments: Tiny bluegreen crystals of trippkeite, maximum size about 1 mm in volcanic rock. Type specimen for trippkeite. Location: Copiapo, Atacama, Chile. Scale: Specimen Size 14x6 mm. © German Type Specimen Catalogue
Tripuhyite: Fe++Sb+++++O4 Squawcreekite: (Fe+++,Sb+++++,W++++++)O4·(H2O)
Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite. Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given. © Diederik Visser
Tripuhyite: Fe++Sb+++++O4
Comments: Brown tripuhyite on matrix. Location: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Tristramite: (Ca,U++++,Fe+++)(PO4,SO4)·2(H2O)
Comments: Reflected light, crossed polars showing a cavity with tristramite (white) infill and surrounded by intergrowth of marcasite (dark) and pitchblende (dark). (MinMag, v47:344). Location: Wheal Trewavas Head dumps, Cornwall, UK. Scale: Scale bar = 0.1 mm. © Mineralogical Magazine
Tritomite-(Ce): (Ce,La,Ca,Y,Th)5(Si,B)3(O,OH,F)13
Comments: Dark brown, vitreous grains of tritomite-(Ce) in pegmatite matrix. Location: Langesundsfjorden, Larvik, Vestfold, Norway. Scale: Crystal size 1 cm. © Tom Loomis / Dakota Matrix
Tritomite-(Y): (Y,Ca,La,Fe++)5(Si,B,Al)3(O,OH,F)13 (?)
Comments: Massive, resinous spencite (Tritomite-(Y)), with brown zircon crystals.. Location: BEMCO prospect (Charlotte Mine), Cranberry Lake, Byram Township, Sussex Co., New Jersey, USA. Scale: Sample Size 2.0 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Trogerite: H2(UO2)2(AsO4)2·8(H2O) Metazeunerite: Cu(UO2)2(AsO4)2·8(H2O)
Comments: Yellow crystals of trögerite with green metazeunerite. Location: Walpurgis Flats, Weißer Hirsch Mine, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Trogtalite: CoSe2
Comments: Polished section (PPL). Grains of anhedral trogtalite (Tgt) partly replaced by a veinlet of sulfur-bearing berzelianite (Brz) in malachite-cemented (Mal) quartz (Qtz). (CanMin, v46:219). Location: Thrust-Slice '2400' of the Musonoi Extension mine, Katanga, Democratic Republic of Congo. Scale: See Image. © Canadian Mineralogist
Troilite: FeS Cohenite: (Fe,Ni,Co)3C Kamacite: alpha-(Fe,Ni) Taenite: gamma-(Fe,Ni)
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
Trolleite: Al4(PO4)3(OH)3 Berlinite: AlPO4
Comments: Pinkish crystalline berlinite with blue trolleite. Location: Ijzer Mine, Vestana, Christiansted, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Trolleite: Al4(PO4)3(OH)3 Viseite: Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?)
Comments: Chalky white massive viseite with bluish trolleite. Location: Champion Sillimanite Mine, near Laws, Mono County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species