Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Iquiqueite: K3Na4Mg(Cr++++++O4)B24O39(OH)ˇ12(H2O) Nitratine: NaNO3
Comments: Yellow iquiqueiite in clear, massive nitration. Location: Salar de Miraje, Antofagasta, Chile. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Iriginite: (UO2)(Mo++++++2O7)ˇ3(H2O)
Comments: Yellow aggregates of iriginite on matrix. Location: Cameron area, Coconino County, Arizona, USA. Scale: Picture size 2.5 mm. © Thomas Witzke / Abraxas-Verlag
Isoferroplatinum: (Pt,Pd)3(Fe,Cu) Cuproiridsite: CuIr2S4
Comments: Gray equant crystal of cuproiridsite in light gray isoferroplatinum. Polished section (from microprobe analysis) in reflected light. Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.14 mm. © Thomas Witzke / Abraxas-Verlag
Isokite: CaMg(PO4)F
Comments: Pale brownish to brown isokite in quartz. Location: Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Scale: Picture size 7 mm. © Thomas Witzke / Abraxas-Verlag
Isomertieite: Pd11Sb2As2 Arsenopalladinite: Pd8(As,Sb)3 Gold: Au Bornite: Cu5FeS4
Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light. Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm. © Thomas Witzke / Abraxas-Verlag
Isovite: (Cr,Fe)23C6
Comments: Dark gray metallic grain of isovite. Location: Verkhneivinsk, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Grain size 0.7 mm. © Thomas Witzke / Abraxas-Verlag
Jachymovite: (UO2)8(SO4)(OH)14ˇ13(H2O)
Comments: Yellow crystals of jáchymovite. Location: Jáchymov (St Joachimsthal), Krusné Hory (Erzgebirge), Západoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Jarosite: KFe+++3(SO4)2(OH)6 Alunogen: Al2(SO4)3ˇ17(H2O)
Comments: Colorless to white, tabular crystals alunogen on reddish jarosite. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Jarosite: KFe+++3(SO4)2(OH)6 Fairbankite: PbTe++++O3
Comments: Colorless to white crystals of fairbankite with orangish brown jarosite. Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Jarosite: KFe+++3(SO4)2(OH)6 Winstanleyite: TiTe++++3O8
Comments: Small, yellow octahedral crystal of winstanleyite on brownish red jarosite. Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 0.9 mm. © Thomas Witzke / Abraxas-Verlag
Jensenite: Cu++3Te++++++O6ˇ2(H2O)
Comments: Small green crystals of jensenite in matrix. Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 1.2 mm. © Thomas Witzke / Abraxas-Verlag
Jeromite: As(S,Se)2
Comments: Orange, powdery jeromite on matrix. Location: Salar de Surire, Tarapaca, Chile. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Johnsomervilleite: Na2Ca(Mg,Fe++,Mn)7(PO4)6
Comments: Dark brownish johnsomervilleite. Location: Sapucaia Mine, Conselheiro Pena district, Galiléia, Governador Valadares, Rio Doce, Minas Gerais, Southeast Region, Brazil. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Jordisite: MoS2
Comments: Black earthy jordisite on matrix. Location: Glückauf Shaft, Himmelsfürst Mine, Brand-Erbisdorf, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Juonniite: CaMgSc(PO4)2(OH)ˇ4(H2O)
Comments: Brownish grain of juonniite on matrix. Location: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Kaatialaite: Fe+++[H2As+++++O4]3ˇ5-5.5(H2O)
Comments: White kaatialaite with arsenolite on native arsenic. Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Kamacite: alpha-(Fe,Ni) Carlsbergite: CrN
Comments: Polished section showing a small light gray elongated inclusion of carlsbergite in massive kamacite. Location: Kenton County meteorite, Kenton Co., Kentucky, USA. Scale: Picture size 0.08 mm. © Thomas Witzke / Abraxas-Verlag
Kamacite: alpha-(Fe,Ni) Nickelphosphide: (Ni,Fe)3P
Comments: Small inclusion of nickelphosphide in massive kamacite. Location: Kenton County meteorite, Kenton Co., Kentucky, USA. Scale: Picture size 0.09 mm. © Thomas Witzke / Abraxas-Verlag
Kambaldaite: NaNi4(CO3)3(OH)3ˇ3(H2O)
Comments: Light green kambaldaite blebs and crusts. Location: Kambalda Nickel deposit, Kambalda, WA, Australia. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Kampfite: Ba12(Si11Al5)O31(CO3)8Cl5
Comments: Light, bluish-gray crystalline kampfite. Location: Esquire #1 Claim, Rush Creek, Fresno Co., California, USA. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag