Mineral Specimen Images (S)

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

Sphaerocobaltite: CoCO3  
Vladimirite: Ca5(AsO3OH)2(AsO4)2·5(H2O)

Comments: Translucent white prismatic vladimirite microcrystals with pink sphaerocobaltite.
Location: Irhtem Mine, near Bou Azzer, Ouarzazate, Morocco. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sphalerite: (Zn,Fe)S

Comments: Highly lustrous, black, complex sphalerite crystals to 15 mm in size completely covering the top of a sulfide matrix.
Location: Nanisivik mine, Baffin Island, Northwest Territories, Canada. Scale: 6.5 x 7.5 x 1.8 cm.
© Dan Weinrich

Sphalerite: (Zn,Fe)S  
Ankerite: Ca(Fe++,Mg,Mn)(CO3)2  
Dickite: Al2Si2O5(OH)4

Comments: White, rhombohedral crystals of ankerite and dark gray, metallic sphalerite on beige dickite.
Location: Prego mine, Kladno, Czech Rebublic. Scale: Picture size 2 cm.
© Dave Barthelmy

Sphalerite: (Zn,Fe)S  
Baumhauerite-2a: Pb3As4S9

Comments: Dark crystal of baumhauerite-2a (same shape as baumhauerite) with olive-green transparent sphalerite crystal on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture 2 cm tall.
© Walter Gabriel

Spinel: MgAl2O4

Comments: Spinel on white marble.
Location: Mogok, Myanmar. Scale: 2.2 x 1.5 cm.
© Fabre Minerals

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

Spionkopite: Cu1.4S  
Yarrowite: Cu9S8

Comments: Blue-gray metallic yarrowite grains in granular quartz rock with spionkopite.
Location: Yarrow Creek, Alberta, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Spiroffite: (Mn,Zn)2Te3O8

Comments: Milky yellow crystalline aggregate of Spiroffite on matrix.
Location: Moctezuma mine, Sonora, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Spodiophyllite: (Na,K)4(Mg,Fe++)3(Fe+++,Al)2(Si8O24)

Comments: Gray to black prismatic spodiophyllite crystals in matrix.
Location: Mt. Kukisvumtchorr, Chibiny, Kola, Russia. Scale: Specimen Size 4x4 cm.
© Diederik Visser

Spodumene: LiAlSi2O6

Comments: Stacked crystals of Spodumene (Var. Kunzite).
Location: Galileia, Minas Gerais, Brazil. Scale: Crystal size 7 cm.
© Dave Barthelmy

Spriggite: Pb3[(UO2)6O8(OH)2](H2O)x; x ~ 3

Comments: Secondary electron microscope image of spriggite crystals and twins. (AmMin, 89:341).
Location: Number 2 workings, Radium Ridge, Northern Flinders Ranges, South Australia. Scale: See Image.
© American Mineralogist

Spurrite: Ca5(SiO4)2(CO3)  
Bredigite: Ca7Mg(SiO4)4

Comments: White veins of bredigite in massive gray spurrite (slabbed specimen).
Location: Camphouse, Ardnamurchan, Argyll, Highland, Scotland. 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

Squawcreekite: (Fe+++,Sb+++++,W++++++)O4·(H2O)  
Tripuhyite: Fe++Sb+++++O4

Comments: Micro red-orange squawcreekite crystals in matrix. The mineral is now considered to be a Zn-bearing variety of Tripuhyite.
Location: Squaw Creek Tin Mine, Catron County, New Mexico. Scale: Not Given.
© Diederik Visser

Srebrodolskite: Ca2Fe+++2O5  
Periclase: MgO

Comments: Black grains of srebrodolskite with white periclase.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Srebrodolskite: Ca2Fe+++2O5  
Kumtyubeite: Ca5(SiO4)2F2  
Wadalite: Ca6Al5Si2O16Cl3  
Rondorfite: Ca8Mg(SiO4)4Cl2

Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361).
Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image.
© American Mineralogist

Srilankite: (Ti,Zr)O2

Comments: Backscatter electron image of srilankite (Sri) - rutile (Rt) - ilmenite (Ilm) composite grain (AmMin, v 89, p 761).
Location: Atlantis II Fracture Zone, Southwest Indian Ridge, Southern Indian Ocean. Scale: See Image.
© American Mineralogist

Stanfieldite: Ca4(Mg,Fe++,Mn)5(PO4)6

Comments: B&W BSE image of a fragment of stanfieldite in an epoxy grain mount.
Location: Brahin Meteorite, Pallasite, Minsk, Belarus (1810). Scale: See Image.
© Diederik Visser

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