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Szenicsite: Cu3MoO4(OH)4
Comments: Deep green szenicsite crystals on siliceous green to brown jasperoid. Location: Jardinera #1 Mine, Atacama Province, Chile. Scale: 6.2 x 3.5 cm. © John Veevaert
Szomolnokite: Fe++SO4·(H2O) Voltaite: K2Fe++5Fe+++3Al(SO4)12·18(H2O)
Comments: Whitish crystalline crust of voltaite on crystals of brown szomolnokite. Location: Alcaparrosa Mine, Cerritos Bayos, Chile. Scale: Picture size 1 cm. © John Veevaert
Talmessite: Ca2Mg(AsO4)2·2(H2O)
Comments: Pale green, crystalline aggregates of talmessite on reddish, hematite-stained calcite. Location: Ourlil, Bou Azzer, Anti Atlas Mts., Morocco. Scale: Crystal size 4 mm. © John Veevaert
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
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
Thaumasite: Ca3Si(CO3)(SO4)(OH)6·12(H2O)
Comments: Doubly-terminated Thaumasite. Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 1 cm across. © John Veevaert
Comments: Transparent crystal of thaumasite. Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 1.1 x 0.4 cm. © John Veevaert
Thomasclarkite-(Y): (Na,Ce)(Y,REE)(HCO3)(OH)3·4(H2O)
Comments: Transparent, yellowish crystal of thomasclarkite-(Y). Location: Mt. St. Hilaire, Quebec, Canada. Scale: 0.75 mm. © John Veevaert
Thomsenolite: NaCaAlF6·(H2O) Cryolite: Na3AlF6
Comments: Massive, white cryolite with solution cavities lined with prismatic Thomsenolite crystals. Location: Ivigtut, Greenland. Scale: . © John Veevaert
Tugtupite: Na4AlBeSi4O12Cl
Comments: Albite hosting a 1.2 cm mass of partially gem quality tugtupite. Location: Tugtup, Greenland. Scale: 2.1 x1.3 cm. © John Veevaert
Tyuyamunite: Ca(UO2)2V2O8·5-8(H2O)
Comments: Yellow tyuyamunite crystals 1 mm in size. Location: Marie Mine, Carbon Co., Montana. USA. Scale: picture size 2 cm.. © John Veevaert
Uranocircite: Ba(UO2)2(PO4)2·12(H2O) Metauranocircite: Ba(UO2)2(PO4)2·6-8(H2O)
Comments: Brilliant, fluorescent yellow green crystals of uranocircite altered to meta-uranocircite. Location: Bergen, Vogtland, Saxony, Germany. Scale: 2.3 x 2.2 cm. © John Veevaert
Uranopilite: [(UO2)6(SO4)O2(OH)6(H2O)6]·8(H2O) Zippeite: K4(UO2)6(SO4)3(OH)10·4(H2O)
Comments: Bright yellow uranopilite and reddish brown zippeite encrustations on uranium ore. Location: Happy Jack Mine, White Canyon, Utah. Scale: 3 cm. © John Veevaert
Ussingite: Na2AlSi3O8(OH) Cuprostibite: Cu2(Sb,Tl)
Comments: Massive ussingite hosting grains of the very rare copper antimony-thallium bearing cuprostibite. Location: Ilimaussaq, Tasseq, Greenland. Scale: 4.8 x3.4 cm. © John Veevaert
Ussingite: Na2AlSi3O8(OH) Vuonnemite: Na11Nb2TiSi4O12(PO4)2O5F2
Comments: Massive, violet colored ussingite with a single bladed partial crystal of white vuonnemite 1.5 cm in length. Location: Mt. Karnasurf, Lovozero, Russia. Scale: 4.2 x 3 cm. © John Veevaert
Vandenbrandeite: Cu(UO2)(OH)4
Comments: Cluster of deep greenish black crystals of vandenbrandeite to 2 mm. Location: Musonoi Mine, Katanga, Dem. Rep. of the Congo. Scale: Picture size 1.5 cm. © John Veevaert
Vauxite: Fe++Al2(PO4)2(OH)2·6(H2O)
Comments: Crystals of vauxite to 1.4mm. Location: Siglo Mine, Llallagua, Bolivia. Scale: Picture size 3 cm. © John Veevaert
Veszelyite: (Cu,Zn)2ZnPO4(OH)3·2(H2O)
Comments: Terminated and lustrous crystals of blue-green veszelyite to 0.5 cm in length. Location: Black Pine Mine, Philipsburg, Granite County, Montana, USA. Scale: Picture size 3 cm. © John Veevaert
Villyaellenite: Mn++5(AsO3OH)2(AsO4)2·4(H2O)
Comments: Bright rose red crystals of villyaellenite to 2.5 mm on gossan. Location: Veta Negra Mine, Tierra Amarilla, Chile. Scale: Picture size 1.5 cm. © John Veevaert
Volborthite: Cu++3V+++++2O7(OH)2·2(H2O)
Comments: Shale with a heavy coating of brilliant green, scaly crystals of volborthite. Location: Monument #1 Mine, Apache County, Arizona. Scale: 6.5 x 5.5 cm. © John Veevaert