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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
Kulanite: Ba(Fe++,Mn,Mg)2Al2(PO4)3(OH)3
Comments: White apatite crystals to 0.5 cm in length and abundant, bladed, deep olive green crystals (see inset image) of kulanite. Location: Rapid Creek, Yukon Territory, Canada. Scale: 4.3 x 3.2 cm. © John Veevaert
Kuliokite-(Y): (Y,REE)4Al(SiO4)2(OH)2F5
Comments: White encrustations of kuliokite-(Y) grains on pegmatite. Location: Ploskaya Mt., Western Keivy, Kola Peninsula, Russia. Scale: Specimen Size 14x10x8 mm. © Sergey Vasiliev / Systematic Mineralogy
Kumtyubeite: Ca5(SiO4)2F2 Srebrodolskite: Ca2Fe+++2O5 Wadalite: Ca6Al5Si2O16Cl3 Rondorfite: Ca8Mg(SiO4)4Cl2
Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361). Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image. © American Mineralogist
Kupcikite: Cu3.4Fe0.6Bi5S10 Cuprobismutite: Cu10Bi12S23
Comments: Backscattered electron image of kupcĂkite (ku) replacing cuprobismutite (cu); both phases are in turn replaced by bsimuthinite derivative (bd79-92). Location: Felbertal, Austria. Scale: Scale bar 100 µ-m. © Canadian Mineralogist
Kupletskite: K2Na(Mn,Fe++)7(Ti,Nb)2Si8O26(OH)4F Niobokupletskite: K2Na(Mn,Zn,Fe)7(Nb,Zr,Ti)2Si8O26(OH)4(O,F)
Comments: Back-scattered electron image of Niobokupletskite (Nkpt) rimming kupletskite (Kpt). The zoning in the kupletskite is from Nb-poor to Nb-rich in the direction of the arrow (dark to medium gray). (CanMin v 38, p 628). Location: Mont Saint-Hilaire, Quebec, Canada. Scale: Scale bar 100 µ-m. © Canadian Mineralogist
Kupletskite: K2Na(Mn,Fe++)7(Ti,Nb)2Si8O26(OH)4F
Comments: Bronze-colored stellate crystalline spray of kupletskite on white orthoclase. Location: 3M quarry, Little Rock, Pulaski County, Arkansas, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Kupletskite-(Cs): (Cs,K)2Na(Mn,Fe++,Li)7(Ti,Nb)2Si8O26(OH)4F Tienshanite: BaNa2MnTiB2Si6O20
Comments: Dark olive-green colored crystalline tienshanite with cesium-kupletskite in microcline. Location: Dara-Pioz, Tien-Shan, Tadzhikistan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kuranakhite: PbMn++++Te++++++O6
Comments: Reddish-brown kuranakhite on matrix. Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Kurchatovite: Ca(Mg,Mn,Fe++)B2O5
Comments: Gray crystalline kurchatovite (arrow) in matrix (distinguishable by violet fluorescence). Location: Solongo, Republic of Buryatia, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species