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Schulenbergite: (Cu,Zn)7(SO4,CO3)2(OH)10ˇ3(H2O) Linarite: PbCu(SO4)(OH)2
Comments: Light greenish rosettes of schulenbergite with small green crystals of ramsbeckite and blue crystals of linarite. Location: Gelbe Birke Mine, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.2 mm. © Thomas Witzke / Abraxas-Verlag
Schultenite: PbHAsO4
Comments: Arrow-shaped crystals of schultenite on matrix. Location: Gifford Lakes, King County, Washington, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Schumacherite: Bi3[(V,As,P)O4]2O(OH) Pucherite: BiVO4
Comments: Brown crystals of pucherite with yellow schumacherite on matrix. Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Schwertmannite: Fe+++16O16(OH)12(SO4)2
Comments: Orange-brown, earthy schwertmannite. Location: Jachymov, Bohemia, Czech Republic. Scale: Not Given. © Diederik Visser
Scolecite: CaAl2Si3O10ˇ3(H2O)
Comments: Delicate cluster spray of colorless transparent acicular crystals of scolecite. The scolecites measure to 3 mm in thickness. Location: Nasik district, Maharashtra, India. Scale: 5 x 3.5 x 9.5 cm. © Dan Weinrich
Scorodite: Fe+++AsO4ˇ2(H2O)
Comments: Quartz with an exposed vug lined with lustrous bluish colored crystals of scorodite to 4 mm across. Location: Hemerdon Mine, Sparkwell, Devon, England. Scale: 5 x 3.6 cm. © John Veevaert
Scorodite: Fe+++AsO4ˇ2(H2O) Beudantite: PbFe+++3(AsO4)(SO4)(OH)6
Comments: Blue, 2 cm in length scorodite crystals on a sparkling matrix of brilliant brown-black beudantite. Location: Tsumeb, Namibia. Scale: 8 x 5 x 3 cm. © John Schneider
Comments: Color changing scorodite, green (left image) in daylight, red (right image) under indoor lighting. Location: Ahgbar, Morocco. Scale: NA. © John Veevaert
Scorzalite: (Fe++,Mg)Al2(PO4)2(OH)2
Comments: Deep blue scorzalite with muscovite, quartz, and feldspar in matrix. Location: Polermo Mine, North Groten, New Hampshire, USA. Scale: 5 x 3.5 cm. © John Veevaert
Scotlandite: PbSO3
Comments: Radiating group of colorless spear-head shaped prismatic crystals of scotlandite. Location: Lady Anne Hopetoun shaft. Leadhills, Lanarkshire, Scotland. Scale: See Image. © Rruff Database
Scrutinyite: PbO2
Comments: Acicular crystals of scrutinyite. Location: Hilarion Mine, Agios Konstantinos, Lavrion District, Attikí Prefecture, Greece. Scale: Picture size 1 mm. © Thomas Witzke / Abraxas-Verlag
Searlesite: NaBSi2O5(OH)2
Comments: Clear, prismatic crystal of Searlesite. Location: Point of Rocks Mesa. Colfax County, New Mexico, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Sederholmite: NiSe Kitkaite: NiTeSe Penroseite: (Ni,Co,Cu)Se2
Comments: B&W polished section image showing kitkaite replacing calcite in penroseite, clausthalite and sederholmite. Note the absence of the clausthalite envelope around kitkaite.. Location: Valley of the Kitka river in Kuusamo, northeast Finland. (AmMin, v50:581). Scale: 100 X. © American Mineralogist
Seeligerite: Pb3Cl3(IO3)O
Comments: Orange crystalline seeligerite in matrix. Location: Casucha Mine, Sierra Gorda, Antofagasta, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Segelerite: CaMgFe+++(PO4)2(OH)ˇ4(H2O)
Comments: Yellow, prismatic, striated crystal of Segelerite. Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Segnitite: PbFe+++3H(AsO4)2(OH)6
Comments: Translucent yellow crystalline segnitite crust. Location: Kintore Open Cut, Broken Hill, New South Wales, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Seidite-(Ce): Na4(Ce,Sr)2{Ti(OH)2(Si8O18)}(O,OH,F)4ˇ5(H2O)
Comments: Scanning Electron image of seidite-(Ce) with the axial components of a and c superimposed on crystal. Location: Yubileynaya pegmatite at Mount Karnasurt, Lovozero alkaline massif, Kola Peninsula, Russia. Scale: Image size 0.5 mm. © Canadian Mineralogist
Seidozerite: (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 Arfvedsonite: NaNa2(Fe++4Fe+++)Si8O22(OH)2
Comments: Dark red translucent seidozerite with vitreous, black arfvedsonite. Location: Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Seifertite: SiO2
Comments: BSE-SEM showing white lamellae are seifertite and the black lamellae consisting of dense SiO2 glass, probably formed by vetrification of another metastable post-stishovite silica plolymorph. Location: Shergotty meteorite. Scale: See Image. © Bavarian Research Institute
Sekaninaite: (Fe++,Mg)2Al4Si5O18
Comments: Black-green crystalline sekaninaite cleavage with dark purple colored fracture surface. Location: Rozna, Moravia, Jihomoravsky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species