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Stetefeldtite: Ag2Sb2O6(O,OH)
Comments: Light yellow, massive, earthy stetefeldtite aggregates. Location: Snyder Hill Mine, Tucson Mountains, Pima Co., Arizona, USA. Scale: 2.5x2x1cm. © Tom Loomis / Dakota Matrix
Stevensite: (Ca0.5,Na)0.33(Mg,Fe++)3Si4O10(OH)2·n(H2O)
Comments: Granular massive stevensite. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stewartite: Mn++Fe+++2(PO4)2(OH)2·8(H2O) Rockbridgeite: (Fe++,Mn)Fe+++4(PO4)3(OH)5
Comments: Pointed, brownish yellow stewartite crystals on massive, dark rockbridgeite. Location: Hagendorf, Bavaria, Germany. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Stibarsen: SbAs Vaughanite: TlHgSb4S7 Paakkonenite: Sb2AsS2
Comments: B&W image of vaughanite (Va) aggregate surrounding a fibrous bundle of paakkonenite (Pfi) and associated with stibarsen (Star) and realgar (Re). Oil immersion. (CanMin, v53:369). Location: Rare primary constituent of the Golden Giant orebody of the Hemlo gold deposit, Hemlo, Ontario, Canada. Scale: See Image. © Canadian Mineralogist
Stibarsen: SbAs
Comments: Massive Stibarsen. Location: Bohemia, Czechoslovakia. Scale: 3 x 2 cm. © John Veevaert
Stibiconite: Sb+++Sb+++++2O6(OH)
Comments: Yellowish druses of microscopic stibiconite pseudomorphic after sharply terminated stibnite crystals. Location: Xi Kuang Shang mine, Len Shui Jiang, Hunan Province, China. Scale: 31x11x8 cm. © Dan Weinrich
Stibioclaudetite: AsSbO3
Comments: Transparent prismatic crystals of stibioclaudetite in a vug. Type specimen for this species.. Location: Tsumeb, Namibia. Scale: See Image. © William Pinch
Stibiopalladinite: Pd5Sb2
Comments: Gray metallic stibiopalladinite, with bronze tarnish, flattened crystal grains. Location: Choco, Columbia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stibiotantalite: SbTaO4
Comments: Translucent stibiotantalite crystal. Location: Himalaya Mine, Mesa Grande, San Diego County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stibivanite: Sb+++2V++++O5
Comments: Green crystals of stibivanite on matrix. Location: Buca della Vena Mine, Stazzema (Ponte Stazzemese), Versilia, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag