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Sorbyite: Pb19(Sb,As)20S49
Comments: Gray metallic sorbyite stringers in white quartz. Location: Candelaria, Mineral County, Nevada, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sorensenite: Na4SnBe2Si6O18·2(H2O)
Comments: Translucent white prismatic sorensenite crystals and crystalline in dark aegirine. Location: Kvanefjeld, Ilimaussaq, Greenland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Souzalite: (Mg,Fe++)3(Al,Fe+++)4(PO4)4(OH)6·2(H2O)
Comments: Blue-gray radial sprays of souzalite in brown siderite. Location: Rapid Creek, Yukon Territory, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spadaite: MgSiO2(OH)2·(H2O) (?)
Comments: Tan mottled silky fibrous spadaite, slightly flexible coatings. Location: Palos Verdes Hills, Los Angeles County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spencerite: Zn4(PO4)2(OH)2·3(H2O)
Comments: Pale green pearly translucent spencerite, with divergent structure. Location: Salmo, Nelson Mining District, British Columbia, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spertiniite: Cu(OH)2
Comments: Sparse blue spertiniite on serpentinite rock. Location: Jeffrey Quarry, Asbestos, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spionkopite: Cu1.4S Yarrowite: Cu9S8
Comments: Blue-black metallic granular spionkopite, intermixed with yarrowite altering, with quartz. Location: Yarrow Creek, Alberta, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Spurrite: Ca5(SiO4)2(CO3)
Comments: Dark to light purple massive spurrite (cut face). Location: South Sister Peak, Tres Hermanas Mountains, Luna County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Stanleyite: (V++++O)SO4·6(H2O) Patronite: VS4
Comments: Blue crystalline stanleyite on dark patronite. Location: Minas Ragra, Junin, Peru. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Starkeyite: MgSO4·4(H2O)
Comments: Translucent starkeyite on rock. Location: Barvue Mine, Barville, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species