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Tinticite: Fe+++5(PO4,VO4)4·7(H2O)
Comments: Porcelaneous tinticite chip. Location: Near Tintic Standard Mine, Tintic District, Juab County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tinzenite: (Ca,Mn,Fe)3Al2BO3Si4O12(OH)
Comments: Orange crystalline tinzenite with quartz and black braunite. Location: Cassagne mine, near Chiavari, Liguria, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tisinalite: Na3H3(Mn++,Ca,Fe)TiSi6(O,OH)18·2(H2O)
Comments: Yellow tisinalite in syenite pegmatite matrix. Location: Mount Alluaiv, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Titantaramellite: Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe
Comments: Dark brownish black titantaramellite crystal in quartz. Location: Rush Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tobelite: (NH4,K)Al2(Si3Al)O10(OH)2
Comments: Fine grained massive tobelite. Location: Tobe, Ehime, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tobermorite: Ca5Si6O16(OH)2·4(H2O)
Comments: Bright white tobermorite with blue calcite, USA. Location: Crestmore Quarry, Riverside County, California. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Todorokite: (Na,Ca,K)2(Mn++++,Mn+++)6O12·3-4.5(H2O) Opal: SiO2·n(H2O)
Comments: Dendritic todorokite in white opal. Location: Brosso Mine, Ivrea, Torino, Piemonte, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Tokkoite: K2Ca4[Si7O18(OH)](F,OH) Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)
Comments: Yellow crystalline tokkoite intermixed with purple charoite (viewed cross-sectional to fiber direction). Location: Murun, Aldan, Republic of Sakha, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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