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Svanbergite: SrAl3(PO4)(SO4)(OH)6
Comments: Milky white dolomite with scattered cinnamon brown crystals of svanbergite to 2 mm across. Location: Mt. Brussilof Mine, near Radium, British Columbia, Canada. Scale: Picture size 1.5 cm. © John Veevaert
Svyazhinite: MgAl(SO4)2F·14(H2O)
Comments: Granular svyazhinite aggregate. Location: Chelyabinsk Coal Basin, Kopeisk, Chelyabinsk District, Southern Urals, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Swamboite: U++++++H6(UO2)6(SiO4)6·30(H2O)
Comments: Yellow crystals of Swamboite to 0.5 mm across. Location: Swambo, Katanga, Dem. Rep. of the Congo. Scale: Picture size 1.5 cm. © John Veevaert
Swartzite: CaMg(UO2)(CO3)3·12(H2O)
Comments: Pale yellow powdery swartzite, intermixed with gypsum on schist rock. Location: Hillside Mine, Bagdad, Yavapai County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Swedenborgite: NaBe4SbO7
Comments: Water clear, prismatic crystal of swedenborgite on matrix. Under UV light it glows intense blue. Location: Langban, Varmland, Sweden. Scale: Crystal size 1 mm. © Tom Loomis / Dakota Matrix
Sweetite: Zn(OH)2
Comments: A white, pseudocubic crystal of sweetite. Location: Milltown Quarry, Ashover, Derbyshire, England, UK. Scale: Picture size 1.4 mm. © John Betts - Fine Minerals
Swinefordite: (Li,Ca0.5,Na)0.72(Li,Al,Mg)2.66(Si,Al)4O10(OH,F)2·2(H2O)
Comments: Dark green leathery swinefordite coating on pegmatite. Location: Foote Mine, King's Mountain, Cleveland County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Switzerite: (Mn++,Fe++)3(PO4)2·7(H2O)
Comments: Pale brown sub-metallic thin platy switzerite coatings. Location: Foote Mine, King's Mountain, Cleveland County, North Carolina, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sylvanite: (Au,Ag)2Te4
Comments: Flat-lying, metallic crystallized sylvanite on a quartz rich matrix. Caleb Simkoff Collection. Location: Sacaramb (Nagyag), Transylvania, Romania. Scale: 7.5 x 8.5 x 4 cm. © Dan Weinrich
Sylvite: KCl
Comments: Translucent sylvite crystal cluster, somewhat deliquescent. Location: F.O. Kailwerk, Sigmundshall, near Wunstorf, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species