Mineral Specimen Images (S)

Siderophyllite: KFe++2Al(Al2Si2)O10(F,OH)2

Comments: Micaceous siderophyllite with quartz.
Location: Karaoba, Aktjubinsk, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Siderotil: Fe++SO4·5(H2O)

Comments: Siderotil pseudomorphs after melanterite.
Location: 2700' level, Campbell Shaft, Bisbee, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sidorenkite: Na3Mn(PO4)(CO3)

Comments: Dark brown sidorenkite masses in syenite rock.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sidwillite: MoO3·2(H2O)

Comments: Thin olive-green sidwillite coatings on quartz crystals.
Location: Lake Como, Summit County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Siegenite: (Ni,Co)3S4

Comments: Equant, dark gray, metallic crystals of siegenite on matrix.
Location: LaMotte mine, Fredericktown, Madison County, Missouri, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Siegenite: (Ni,Co)3S4  
Cattierite: CoS2

Comments: Pinkish metallic cattierite, intergrown with gray siegenite.
Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sieleckiite: Cu3Al4(PO4)2(OH)12·2(H2O)

Comments: SEM image showing a hemisphere of sieleckiite on variscite crystals. (MinMag, 52:515).
Location: Mt Oxide Copper Mine, 150 km north of Mt Isa, Queensland, Australia. Scale: Sphere Diameter 0.4 mm.
© Mineralogical Magazine

Sigloite: Fe+++Al2(PO4)2(OH)3·5(H2O)  
Vauxite: Fe++Al2(PO4)2(OH)2·6(H2O)

Comments: Lime green, crystalline aggregate of sigloite on massive, blue vauxite.
Location: Llallagua, Potosi Department, Bolivia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Silhydrite: 3SiO2·(H2O)

Comments: Fine grained massive silhydrite.
Location: Near Rome, Oregon, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Silicon: Si  
Moissanite: SiC

Comments: Backscattered electron image of metallic inclusion in moissanite (SiC). The gray shading in the BSE mage consists mainly of pure silicon (Si metal). The brighter areas are composed of Fe-silicide. (AmMin, 88:1818).
Location: Found in a cobble at a beach along the Turkish coast of the Mediterranean Sea, around 150 km NW from Izmir, and is most likely derived from Tertiary volcanic rocks outcropping in the area. Scale: Scalebar 200 µ-m.
© American Mineralogist

Sillenite: Bi12SiO20

Comments: Greenish to yellowish grains of sillénite in matrix.
Location: Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Sillimanite: Al2SiO5 = Al[6]Al[4]OSiO4

Comments: Silky massive sillimanite.
Location: Khasia Hills, Assum, India. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Silver: Ag  
Gold: Au

Comments: Very well crystallized Electrum (Silver rich gold) on quartz. The analysis gave 31.47% silver.
Location: Verespatak (now Rosia Montana), Transylvania, Romania. Scale: 2.8 x 3.4 cm.
© Fabre Minerals

Silver: Ag

Comments: Numerous fine, silver wires to 4 mm in diameter attached to a matrix of massive white calcite and minor sulfides.
Location: Himmelsfahrt mine, near Freiberg, Saxony, Germany. Scale: 4 x 4.5 x 6 cm.
© Dan Weinrich

Silver: Ag  
Stephanite: Ag5SbS4

Comments: Thick, ropy, native silver wires with blocky, well-crystallized stephanite on white and tan calcite matrix.
Location: Freiberg, Erzgebirge, Saxony, Alemania, Germay. Scale: Picture size 3 cm.
© Fabre Minerals

Silver: Ag  
Mckinstryite: (Ag,Cu)2S

Comments: Black metallic massive mckinstryite with wire silver.
Location: Peregrina Mine, Guanajuato, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Silvialite: (Ca,Na)4Al6Si6O24(SO4,CO3)

Comments: BSE image of silvialite (Sil), plagioclase (An70)-calcite symplectite (P-C) corona, and plagioclase (An45, P). MinMag, v63:321.
Location: Upper-mantle garnet-granulite xenoliths hosted by olivine nephelinite, from McBride Province, North Queensland, Australia. Scale: Scale Bar 100 µm.
© Mineralogical Magazine

Simmonsite: Na2LiAlF6

Comments: Backscattered electron images of primary assemblage of cryolite-cryolithionite (cl) simmonsite (sm) and trace elpasolite (ep). (AmMin, v 84, p 770).
Location: Zapot amazonite-topaz-zinnwaldite pegmatite located in the Gillis Range, Mineral Co., Nevada, USA. Scale: See Image.
© American Mineralogist

Simonellite: C19H24

Comments: Colorless to white Simonellite on fossil wood.
Location: Fognano, Tuscany, Italy. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Simonkolleite: Zn5(OH)8Cl2·(H2O)

Comments: Very small colorless crystals with hexagonal shape of simonkolleite.
Location: Richelsdorf Smelter, Süss, Richelsdorf District, Hesse, Germany. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag