's Image Gallery

Struvite: (NH4)MgPO4·6(H2O)

Comments: Opaque, white crystal struvite aggregates in earthy matrix.
Location: Skipton Caves, Victoria, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Struvite: (NH4)MgPO4·6(H2O)

Comments: Yellow-brown tabular struvite crystal. Struvite is of organogenic origin and this type locality example is formed in manure pits.
Location: Nicolaikirche, Hamburg, Germany. Scale: Specimen Size 1 x 1 x 1 cm.
© Tom Loomis / Dakota Matrix

Studenitsite: NaCa2[B9O14(OH)4]·2(H2O)

Comments: Pale pink crystalline studenitsite micro fragment.
Location: Piskanja, Srbija, Yugoslavia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Studtite: [(UO2)O2(H2O)2](H2O)2  
Billietite: Ba(UO2)6O4(OH)6·8(H2O)

Comments: Acicular, white sprays of studtite crystals on yellow, tabular billietite.
Location: Shinkolobwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Sturmanite: Ca6(Fe+++,Al,Mn++)2(SO4)2[B(OH)4](OH)12·25(H2O)

Comments: Sharply terminated dark yellowish crystal of sturmanite with a few lesser crystals attached to one side.
Location: N'Chwaning mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 17 x 10 x 16 mm.
© Dan Weinrich

Sturtite: (Fe3+)(Mn2+,Ca,Mg)Si4O10(OH)3·10(H2O)

Comments: Dark red-brown resinous massive sturtite.
Location: North Mine, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stutzite: Ag5-xTe3,(x=0.24-0.36)

Comments: Dull black stutzite grains in white-green calcite.
Location: Mina Bambollita, Moctezuma, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Suanite: Mg2B2O5

Comments: Dark olive green nearly opaque suanite cleavage.
Location: Houxianya, Yingkou, Liaoning, China. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sudburyite: (Pd,Ni)Sb

Comments: SEM image showing ilmenite-hematite (il-hm), chalcopyrite (ccpy), and magnetite-ulvospinel (mte-usp). Detailed SEM image shows composite grain of sudburyite and safflorite (7 x 4 µm).
Location: Fesh road cut for Interstate 83 at Reesers Summit, one mile south of the exit for the Pennsylvania Turnpike between Harrisburg and York in York County, Pennsylvania, USA. Scale: See Image.
© Pennsylvania DCNR

Sudoite: Mg2(Al,Fe+++)3Si3AlO10(OH)8  
Manganite: MnO(OH)

Comments: Pinkish to nearly white earthy sudoite with dark manganite.
Location: Ilfeld, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Suessite: (Fe,Ni)3Si

Comments: B&W image of suessite (white) as vein fillings and blebs. Silicates (olivine, pigeonite) are gray; carbonaceous matrix is black. Hydrous ferric oxide veins are (light gray).
Location: North Haig olivine pigeonite achondrite (ureilite). (AmMin, v67:126). Scale: Scale Bar 100 µm.
© American Mineralogist

Sugakiite: Cu(Fe,Ni)8S8

Comments: Reflected light polished section of sugakiite (sg) associated with bornite (bn), talnakhite (td) and native copper (Cu). (CanMin, v43:266).
Location: Horoman, Samani-cho, Urakawa-gun, Japan. Scale: See Image.
© Canadian Mineralogist

Sugilite: KNa2(Fe+++,Mn+++,Al)2Li3Si12O30  
Effenbergerite: BaCuSi4O10

Comments: Blue effenbergerite pods to across in massive purple sugilite.
Location: Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: Crystal size 4 mm.
© John Veevaert

Sugilite: KNa2(Fe+++,Mn+++,Al)2Li3Si12O30  
Pectolite: NaCa2Si3O8(OH)

Comments: Sharp terminated purple crystals of sugilite to 5mm on white, acicular pectolite.
Location: Wessels Mine, Kalahari, South Africa. Scale: Picture size 1.5 cm.
© John Veevaert

Suhailite: (NH4)Fe3(Si3Al)O10(OH)2

Comments: PPL thin-section showing unoriented grains of graphite-rich golden suhailite. Suh - suhalite, Ann - annite, Sil - sillimanite. (AmMin v94:211).
Location: Betic Cordillera gneisses (Spain). Scale: See Image.
© American Mineralogist

Sulfoborite: Mg3B2(SO4)(OH)8(OH,F)2

Comments: Colorless transparent sulfoborite crystal.
Location: Lake Inder, Atyrau, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sulfur: S8  
Coccinite: Hg++I2 (?)

Comments: Orange-red coccinite on sulfur. Due to the volatility of the mineral at room temperature, the sample is preserved in a closed vial. The photo was made through the vial, therefore the sharpness is reduced.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Sulfur: S8

Comments: Single complex crystal of sulfur on white, sucrosic aragonite.
Location: Girgenti, Sicily, Italy. Scale: Crystal size 4.5.
© John Veevaert

Sulfur: S8  
Metastibnite: Sb2S3

Comments: Red coatings of metastibnite with yellow sulfur.
Location: Steamboat Springs, Washoe County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sulphohalite: Na6(SO4)2FCl

Comments: Octahedral sulphohalite crystal.
Location: Searles Lake, San Bernardino Co., California, USA. Scale: Crystal size 5 mm.
© John Veevaert