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Satimolite: KNa2Al4(B2O5)3Cl3·13(H2O)
Comments: Porcelaneous massive satimolite. Location: Satimola-Sahstock, Zapadno-Kazahstan, Kazakhstan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sauconite: Na0,3Zn3(Si,Al)4O10(OH)2·4(H2O)
Comments: Pale brown earthy sauconite on hemimorphite microcrystals. Location: Doughty Mine, near Sunbury, Northumberland County, Pennsylvania, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Sborgite: NaB5O6(OH)4·3(H2O)
Comments: Pale grayish-green massive sborgite. Location: Furnace Creek borate area, Death Valley, Inyo County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Scacchite: MnCl2
Comments: Deliquescent reddish scacchite crust on volcanic rock. Location: Vesuvius, Campania, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Scainiite: Pb14Sb30S54O5
Comments: Black metallic prismatic scainite crystals and crystalline masses on limestone. Location: Tafone Mine, near Manciano, Grosseto, Tuscany, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Scarbroite: Al5(CO3)(OH)13·5(H2O) Hydroscarbroite: Al14(CO3)3(OH)36·n(H2O)
Comments: White to tan nodular hydroscarbroite intermixed with scarbroite in sandstone. Location: Weston Favell, Northamptonshire, England. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schachnerite: Ag1.1Hg0.9
Comments: Schachnerite tarnishing silvery metallic. Location: Sala, Vastmanland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schafarzikite: Fe++Sb+++2O4
Comments: Dull black irregular schafarzikite masses in white marble. Location: Bucca della Vena Mine, Valdi Castello, Carducci, Tuscany, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schaurteite: Ca3Ge++++(SO4)2(OH)6·3(H2O) Tennantite: (Cu,Fe)12As4S13
Comments: Bright white silky fibrous schaurteite on dark tennantite. Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schertelite: (NH4)2MgH2(PO4)2·4(H2O)
Comments: Transparent glassy crystalline schertelite grains. Location: Skipton Caves, Ballarat, Victoria, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schiavinatoite: (Nb,Ta)BO4 Rynersonite: Ca(Ta,Nb)2O6
Comments: Brown, columnar schiavinatoite with minor white rynersonite sticks on quartz. Location: Ampanodiana Sud, Tetezantsio, Mahaiza, Antananarivo, Madagascar. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Schirmerite: Ag3Pb3Bi9S18 to Ag3Pb6Bi7S18
Comments: Gray metallic granular schirmerite in quartz. Location: Grand Trunk, Geneva District, Park County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schmiederite: Pb2Cu++2(Se++++O3)(Se++++++O4)(OH)4
Comments: Acicular schmiederite micro crystals in quartz. Location: Condor Mine, La Rioja, Argentina. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schoepite: (UO2)8O2(OH)12·12(H2O) Ianthinite: (UO2)·5(UO3)·10(H2O)
Comments: Purple to brown resinous ianthinite with yellow schoepite and orange becquerelite. Location: Colorado Plateau area, Saguache County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schorlomite: Ca3(Ti,Fe+++,Al)2[(Si,Fe+++,Fe++)O4]3
Comments: Lustrous massive black schorlomite. Location: Magnet Cove, Hot Spring County, Arkansas, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schreibersite: (Fe,Ni)3P
Comments: Golden metallic schreibersite cleavage fragment from type IIB octahedrite meteorite. Location: Sau Luiao de Moreira Meteorite, Ponte de Lima, Minho, Viana do Castelo, Portugal. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Schuetteite: Hg3(SO4)O2
Comments: Yellow earthy schuetteite coatings. Location: Oceanic Mine, San Luis Obispo County, California. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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
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
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