's Image Gallery

Stibivanite: Sb+++2V++++O5

Comments: Green crystals of stibivanite on matrix.
Location: Buca della Vena Mine, Stazzema (Ponte Stazzemese), Versilia, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Stibnite: Sb2S3

Comments: Prismatic crystals of metallic-lustered stibnite.
Location: Xikuangshan Mine, Lengshuijang, Hunan Province, China. Scale: Crystal size 5-10 cm.
© Dave Barthelmy

Stichtite: Mg6Cr2(CO3)(OH)16·4(H2O)

Comments: Massive, fibrous, lavender-purple stichtite.
Location: Kaapsche Hoop, Barberton District, Mpumalanga Province, South Africa. Scale: 5x3x2 cm.
© John Betts - Fine Minerals

Stilbite-Ca: NaCa4[Al8Si28O72]·n(H2O) (n=28-32)  
Apophyllite: KCa4(Si4O10)2F·8(H2O)  
Apophyllite-(KOH): KCa4Si8O20(OH,F)·8(H2O)

Comments: 3 cm. pink-colored rosette of stilbite and clear "apophyllite" (probably hydroxyapophyllite) in an amygdaloidal cavity.
Location: Aurangabad District, Jalgaon, India. Scale: Specimen size 6 cm.
© Dave Barthelmy

Stilbite-Ca: NaCa4[Al8Si28O72]·n(H2O) (n=28-32)  
Apophyllite-(KF): (K,Na)Ca4Si8O20(F,OH)·8(H2O)  
Apophyllite: KCa4(Si4O10)2F·8(H2O)

Comments: Doubly terminated, very clear and perfect fluorapophyllite with white stilbite.
Location: Jalgaon, India. Scale: 4 x 3.5 cm.
© Fabre Minerals

Stilbite-Ca: NaCa4[Al8Si28O72]·n(H2O) (n=28-32)

Comments: Tabular, honey-colored stilbite (stilbite-Ca?) crystals on matrix.
Location: Gunnedah, New South Wales, Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Stilbite-Ca: NaCa4[Al8Si28O72]·n(H2O) (n=28-32)  
Thomsonite-Ca: NaCa2Al5Si5O20·6(H2O)

Comments: Peach colored stilbite crystals to 3.5 cm in size is hosting two finely crystallized balls of powdery white thomsonite.
Location: Near Jalgaon, Maharashtra State, India. Scale: Picture size 15 cm.
© Dan Weinrich

Stilbite-Na: Na3Ca3[Al8Si28O72]·n(H2O) (n=28-32)

Comments: Stibite 'bow-ties' on matrix.
Location: Cape Pula, Pula, Cagliari Province, Sardinia, Italy. Scale: Largest Crystal Length 3 cm.
© Ed Rosenzweig

Stillwaterite: Pd8As3

Comments: B&W photomicrograph of a stillwaterite grain (gray) associated with native gold. (CanMin, v13:321).
Location: Heavy mineral centrates from the Banded and Upper zones of Stillwater Complex, Montana, USA. Scale: See Image.
© Canadian Mineralogist

Stillwellite-(Ce): (Ce,La,Ca)BSiO5

Comments: Brownish red euhedral crystal of stillwellite-(Ce) in matrix under halogen or sunlight lighting. Inset image shows the yellow color-change under fluorescent lighting.
Location: Darai -Piez Massif, Alay Range of Tien-Shan' Mountains, Garm Region, Tajikistan. Scale: Crystal Size 1.3 cm.
© Rob Lavinsky

Stilpnomelane: K(Fe++,Mg,Fe+++)8(Si,Al)12(O,OH)27·n(H2O)

Comments: Golden metallic scaly stilpnomelane on pink orthoclase.
Location: French Creek No. 2 Mine, near Saint Peters, Chester County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stistaite: SnSb

Comments: Minute stistaite crystal.
Location: Edjej River, Kyrgyzstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stistaite: SnSb  
Sorosite: Cu(Sn,Sb)  
Tin: Sn

Comments: Back-scattered electron image of large sorosite crystal (So=partly skeletal) adjacent to stistaite (St). Tn=native tin. Note abundant microcrystals of sorosite isolated within native tin. (AmMin 83:903).
Location: Baimka gold-platinum group mineral placer deposit, Chukotka, Russian Far East. Scale: Image Size 1.5 cm.
© American Mineralogist

Stokesite: CaSnSi3O9·2(H2O)

Comments: Colorless transparent stokesite microcrystal in albite.
Location: Corrego do Urucum, Galileia, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stokesite: CaSnSi3O9·2(H2O)

Comments: Thick, tabular crystals of stokesite, perched atop a 2 cm sphere of feldspar crystals.
Location: Corrego do Urucum, near Galilea, Minas Gerais, Brazil. Scale: 3.3 x 2.5 x 2 cm.
© Rob Lavinsky

Stokesite: CaSnSi3O9·2(H2O)  
Stannomicrolite: (Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7

Comments: Stokesite "ball" composed of lath-like tan or clear crystals with several micro crystals of yellow stannomicrolite.
Location: Urucum mine, Galileia, Minas Gerais, Brazil. Scale: 1.2 cm.
© Tom Loomis / Dakota Matrix

Stolzite: PbWO4

Comments: White stolzite crystals on matrix.
Location: Tuena mine, New South Wales, Australia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Stornesite-(Y): (Y, Ca)[ ]2Na6(Ca,Na)8(Mg,Fe)43(PO4)36

Comments: BSE image of stornesite-(Y) (Sto) partially surrounding a spherical quartz(Qz)-biotite(Bt) aggregate in apatite (Ap). Other mineral phases include xenotime (Xnt), sillmanite Sil) and corderite (Crd). AmMin, v91, p 1416.
Location: Paragneiss specimens from Johnston Fjord, Stornes Peninsula, Antarctica. Scale: See Image.
© American Mineralogist

Stottite: Fe++Ge(OH)6  
Brunogeierite: (Ge++,Fe++)Fe+++2O4

Comments: Brownish gray, cubic (tetartoidal) brunogeierite crystals with earthy gray stottite and zincian siderite matrix.
Location: Tsumeb, Namibia. Scale: Cabinent Size.
© William Pinch

Straczekite: (Ca,K,Ba)(V5+,V4+)8O20·3H2O

Comments: Greenish-black, prismatic-acicular crystals of straczekite.
Location: Union Carbide Mine, Wilson Springs (Potash Sulfur Springs), Garland Co., Arkansas, USA. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag