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.
Krausite: KFe+++(SO4)2·(H2O)
Comments: Pale yellowish crystals of krausite on black matrix. Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1.7 mm. © Thomas Witzke / Abraxas-Verlag
Krauskopfite: BaSi2O4(OH)2·2(H2O)
Comments: White pearly crystalline krauskopfite on quartz. Location: Rush Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Krautite: MnAs+++++O3(OH)2·(H2O)
Comments: Pale pink aggregates of krautite on greenish colored matrix. Location: Jachymov, Bohemia, Zapadocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kremersite: (NH4,K)2Fe+++Cl5·(H2O)
Comments: Orange crystals of kremersite. Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 1.5 mm. © Thomas Witzke / Abraxas-Verlag
Krennerite: AuTe2
Comments: Metallic krennerite crystals on quartz. Location: Emperor mine, Vatukoula, Viti Levu, Fiji. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Krettnichite: PbMn+++2(VO4)2(OH)2
Comments: Dark brown to nearly black crystals of krettnichite. Location: Johann Shaft; Jakob Tunnel (Dump), Krettnich, Wadern, Saarland, Germany. Scale: Picture size 3.5 mm. © Thomas Witzke / Abraxas-Verlag
Krettnichite: PbMn+++2(VO4)2(OH)2 Brackebuschite: Pb2(Mn,Fe++)(VO4)2(OH)
Comments: Scanning electron microscope image of a prismatic krettnichite (kr) aggregate associated with manganite (ma) and barian brackebuschite (br) in a vug. The inset is a close-up illustrating the morphology of brackebuschite. (Eur. J. Mineral, 13:146). Location: hydrothermal manganite-quartz vein at the historic manganese deposit of Krettnich, Saarland, Germany. Scale: See Image. © Eur. J. Mineral
Kristiansenite: Ca2ScSn(Si2O7)(Si2O6OH)
Comments: Two very nice, clear, intergrown crystals of kristiansenite in pinkish matrix. Location: Heftetjern pegmatite, Tørdal, Drangedal, Telemark, Norway. Scale: Crystal size 1 mm. © Tom Loomis / Dakota Matrix
Krohnkite: Na2Cu(SO4)2·2(H2O) Natrochalcite: NaCu2(SO4)2(OH)·(H2O)
Comments: Royal blue kröhnkite and green natrochalcite. Location: Chiquicamata, Chile. Scale: 3.5 x 2 cm. © John Veevaert
Krupkaite: PbCuBi3S6 Friedrichite: Pb5Cu5Bi7S18 Benjaminite: (Ag,Cu)3(Bi,Pb)7S12
Comments: Crystals of a mixture of friedrichite, krupkaite, and benjaminite, with quartz crystals. Location: Estela Mine, Julcani District, Junin, Peru. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Krupkaite: PbCuBi3S6
Comments: Acicular, fine metallic crystal sprays of krupkaite to 4mm with pale yellow manganoan siderite. Location: Julcani district, Peru. Scale: Picture size 1 cm. © Tom Loomis / Dakota Matrix
Krupkaite: PbCuBi3S6 Paarite: Cu1.7Pb1.7Bi6.3S12
Comments: A mosaic of large grains of a low-Cu bismuthinite derivative, decomposed into an intergrowth of paarite (bd42) and krupkaite (bd49). Location: In quartz veins of the Felbertal scheelite deposit, Salzburg Province, Austria. (CanMin v43:909). Scale: See Image. © Canadian Mineralogist
Krutaite: CuSe2
Comments: Dark gray, metallic, octahedral crystals of krutaite on matrix. Location: El Dragón mine, Quijarro province, Potosí, Bolivia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Krutaite: CuSe2 Kerstenite: PbSeO4 (?) Clinochalcomenite: CuSeO3·2(H2O)
Comments: Tan opaque fibrous kerstenite with possible blue clinochalcomenite on dark krutaite. Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Krutovite: NiAs2
Comments: Gray silivery metallic krutovite grains in matrix. Location: Belorechensk, Krasnodarskij oblast, southeast of Krasnodar, Russia. Scale: Specimen Size 5x2 cm. © Diederik Visser
Kryzhanovskite: MnFe+++2(PO4)2(OH)2·(H2O)
Comments: Brown crystals of kryzhanovskite. Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Ktenasite: (Cu,Zn)5(SO4)2(OH)6·6(H2O)
Comments: Turquoise blue ktenasite on matrix. Location: Gelbe Birke Mine, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 0.9 mm. © Thomas Witzke / Abraxas-Verlag
Kudriavite: (Cd,Pb)Bi2S4
Comments: Tufts of gray metallic kudriavite crystals on matrix. Location: Mutnovskyi Volcano, Kamchatka, Russia. Scale: Sample Size 5x5 mm. © Diederik Visser
Kukharenkoite-(Ce): Ba2Ce(CO3)3F
Comments: White-tan crystals of kukharenkoite-(Ce). Location: Kirovskii (Kirovsky) apatite mine, Mt Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Kukharenkoite-(La): Ba2(La,Ce)(CO3)3F
Comments: Very small olive-green sprays of kukharenkoite-(La) crystals. Location: Kirovsky apatite mine, Mount Kukisvumchorr, Khibina massif, Kola Peninsula, Russia.. Scale: Crystal Size to 0.02 cm. © Jeff Weissman / Photographic Guide to Mineral Species