Mineral Specimen Images (S)

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)·4(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)4·5(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

Selenium: Se

Comments: Acicular crystals of native Selenium (up to 1 cm in length).
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Specimen size 3 cm.
© Thomas Witzke / Abraxas-Verlag

Seligmannite: PbCuAsS3  
Liveingite: Pb9As13S28

Comments: Black prismatic seligmannite crystals with crystalline black liveingite.
Location: Lengenbach Quarry, Binnental, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Seligmannite: PbCuAsS3

Comments: Lead gray, prismatic seligmannite crystal with brassy yellow pyrite on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Crystal size 2 mm.
© Walter Gabriel

Sellaite: MgF2

Comments: Compact, white acicular sellaite crystals.
Location: Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany. Scale: 21x16x10 mm.
© John Betts - Fine Minerals

Selwynite: NaK(Be,Al)Zr2(PO4)4·2(H2O)

Comments: Dark purplish blue crystal of selwynite.
Location: A granite quarry near Wycheproof, NW Victoria, Australia.. Scale: Not Given.
© Museum Victoria

Semenovite: (Na,Ca)9(Ce,La)2(Fe++,Mn)(Si,Be)20(O,OH,F)48

Comments: Tan crystals of semenovite to 1 mm across on matrix.
Location: Ilimaussaq, Tasseq, Greenland. Scale: Picture size 1 cm.
© John Veevaert

Semseyite: Pb9Sb8S21

Comments: Crystal clusters of semseyite crystals to 1 cm on sphalerite.
Location: Herja, Romania. Scale: Picture size 5 cm.
© John Veevaert

Semseyite: Pb9Sb8S21

Comments: Tabular crystals forming groups and rosettes of gray semseyite with creamy greenish yellow siderite.
Location: Herja mine, Maramures Rumania. Scale: 6.5 x 6 x 3.5 cm.
© Fabre Minerals

Senaite: Pb(Ti,Fe,Mn)21O38

Comments: Brownish-black senaite cleavage.
Location: Dattas, near Diamantina, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Senaite: Pb(Ti,Fe,Mn)21O38

Comments: Black crystal of senaite.
Location: Presidente Kibitschek, Minas Gerias, Brazil. Scale: Crystal size 2 mm.
© Dave Barthelmy