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Stistaite: SnSb
Comments: Minute stistaite crystal. Location: Edjej River, Kyrgyzstan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stokesite: CaSnSi3O9·2(H2O)
Comments: Colorless transparent stokesite microcrystal in albite. Location: Corrego do Urucum, Galileia, Minas Gerais, Brazil. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Thick, tabular crystals of stokesite, perched atop a 2 cm sphere of feldspar crystals. Location: Corrego do Urucum, near Galilea, Minas Gerais, Brazil. Scale: 3.3 x 2.5 x 2 cm. © Rob Lavinsky
Stolzite: PbWO4
Comments: White stolzite crystals on matrix. Location: Tuena mine, New South Wales, Australia. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Stornesite-(Y): (Y, Ca)[ ]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36
Comments: BSE image of stornesite-(Y) (Sto) partially surrounding a spherical quartz(Qz)-biotite(Bt) aggregate in apatite (Ap). Other mineral phases include xenotime (Xnt), sillmanite Sil) and corderite (Crd). AmMin, v91, p 1416. Location: Paragneiss specimens from Johnston Fjord, Stornes Peninsula, Antarctica. Scale: See Image. © American Mineralogist
Stottite: Fe++Ge(OH)6 Brunogeierite: (Ge++,Fe++)Fe+++2O4
Comments: Brownish gray, cubic (tetartoidal) brunogeierite crystals with earthy gray stottite and zincian siderite matrix. Location: Tsumeb, Namibia. Scale: Cabinent Size. © William Pinch
Straczekite: (Ca,K,Ba)(V5+,V4+)8O20·3H2O
Comments: Greenish-black, prismatic-acicular crystals of straczekite. Location: Union Carbide Mine, Wilson Springs (Potash Sulfur Springs), Garland Co., Arkansas, USA. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Strakhovite: NaBa3(Mn++,Mn+++)4Si6O19(OH)3
Comments: Dark green vitreous massive strakhovite with inset image of sample. Location: Dzhavodi Area, Ir-Nimi manganese deposit, Taikan Ridge, Khabarovskiy Kray, Far-Eastern Region, Russia. Scale: See Image. © Rruff Database
Stranskiite: Zn2Cu++(AsO4)2
Comments: Blue fibrous Stranskiite veinlets in white quartz. Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Strashimirite: Cu8(AsO4)4(OH)4·5(H2O)
Comments: Green, radial sprays of acicular strashimirite crystals on matrix. Location: Majuba Hill mine, Pershing County, Nevada. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals