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Sphaerocobaltite: CoCO3
Comments: Calcite with numerous crystals of red sphaerocobaltite to 3 mm across. Location: Kamoto Mine, Mashamba, Katanga, Dem. Rep. of the Congo. Scale: Picture size 1.5 cm. © John Veevaert
Stibarsen: SbAs
Comments: Massive Stibarsen. Location: Bohemia, Czechoslovakia. Scale: 3 x 2 cm. © John Veevaert
Stromeyerite: AgCuS
Comments: 1.5 cm spray of hair-like Stromeyerite crystals on quartz and calcite matrix. Location: Vrancice near Pribram, Czech Republic. Scale: Picture size 2 cm. © John Veevaert
Sugilite: KNa2(Fe+++,Mn+++,Al)2Li3Si12O30 Pectolite: NaCa2Si3O8(OH)
Comments: Sharp terminated purple crystals of sugilite to 5mm on white, acicular pectolite. Location: Wessels Mine, Kalahari, South Africa. Scale: Picture size 1.5 cm. © John Veevaert
Sulfur: S8
Comments: Single complex crystal of sulfur on white, sucrosic aragonite. Location: Girgenti, Sicily, Italy. Scale: Crystal size 4.5. © John Veevaert
Sulphohalite: Na6(SO4)2FCl
Comments: Octahedral sulphohalite crystal. Location: Searles Lake, San Bernardino Co., California, USA. Scale: Crystal size 5 mm. © John Veevaert
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
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
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