Mineral Specimen Images (K)

Kozoite-(Nd): (Nd,La,Sm,Pr)(CO3)(OH)  
Kozoite-(La): La(CO3)(OH)

Comments: Backscatter electron image of polished section through a sperical aggregate showing the zonation form kosoite-(La) to kosolite-(Nd). (JMPS, v 98, p 138).
Location: Cavity in alkaline basalt near Mitsukoshi, Saga Prefecture, Japan. Scale: See Image.
© JMPS

Kozulite: NaNa2Mn++4(Fe+++,Al)Si8O22(OH)2

Comments: Dark reddish-black granular kozulite in pale pink rhodonite with dark brown braunite.
Location: Tanohata Mine, Tanohata Muro, Shimoheii gun, Iwate, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kraisslite: (Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18

Comments: Yellow crystalline kraisslite in calcite.
Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Krasnovite: Ba(Al,Mg)(PO4,CO3)(OH)2·(H2O)

Comments: Pastel blue, vitreous massive krasnovite, associated with white ankerite.
Location: Cerro Sapo Carbonatite dike, Cochabamba, Bolivia. Scale: See Image.
© Rruff Database

Kratochvilite: (C6H4)2CH2

Comments: Pale yellow to brown crystalline crust of kratochvilite on shale.
Location: Zastavka, near Brna, Vychodocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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