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Kamchatkite: KCu++3OCl(SO4)2
Comments: Greenish brown crystals of kamchatkite in sealed plastic box. Location: Main Fracture Eruption (1975-1976), Tolbachik Volcano, Kamchatka, Russia. Scale: Specimen Size 2x3 cm. © Diederik Visser
Kamiokite: Fe2Mo3O8
Comments: Dull dark gray-black sectile massive kamiokite. Location: Krupka, Severocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kamitugaite: PbAl(UO2)5(PO4)2(OH)9·9.5(H2O)
Comments: Yellow crystalline kamitugaite on matrix. Location: Kobokobo pegmatite, Lusungu River District, Sud-Kivu, Democratic Republic of Congo (Zaïre). Scale: Picture Size 0.7 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Kamotoite-(Y): (Y,Nd,Gd)2U++++++4(CO3)3O12·14.5(H2O)
Comments: Bright greenish yellow kamotoite-(Y) crystals. Location: Kamoto mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Comments: Bright yellow, feather-like kamotoite-(Y) crystal habits. Location: Kamoto mine, Kolwezi, Shaba, Democratic Republic of the Congo. Scale: Picture size 2 cm. © Tom Loomis / Dakota Matrix
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
Comments: Anthony Kampf, Curator and Section Head of the Mineral Sciences Section at the Los Angeles County Museum of Natural History and the person whom kampfite was named for, kindly provided the pronunciation of the mineral kampfite. Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 12, 2004. Scale: NA. © Dave Barthelmy
Kamphaugite-(Y): (Ca1.84REEx)(Y1.46REE0.54-x)(CO3)4(OH)1.65·2(H2O)
Comments: Small white crystals of kamphaugite-(Y). Location: Tørdal (Hjøndalen), Telemark, Norway. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Kanemite: NaHSi2O5·3(H2O)
Comments: Yellowish white translucent micro spherical aggregate of kanemite. Location: Kanem, Chad. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kankite: Fe+++AsO4·3.5(H2O)
Comments: Greenish botryoidal aggregates of kankite. Location: Reiche Zeche Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Kanoite: (Mn++,Mg)2Si2O6
Comments: Brown, prismatic crystals of kanoite in matrix. Location: Tatehira, Oshima Peninsula, Hokkaido, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kanonaite: (Mn+++,Al)AlSiO5
Comments: Dark greenish black microcrystal of kanonaite in matrix. Location: Le Coreaux, near Salmchateau, Luxembourg, Belgium. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kaolinite: Al2Si2O5(OH)4
Comments: Authigenic kaolinite plates covering a quartz grain overgrown with authigenic quartz. SEM image of a core sample. Location: Unknown. Scale: Picture size 50 µ-m. © OMNI Laboratories, Inc
Kaolinite: Al2Si2O5(OH)4 Ammonioalunite: (NH4)Al3(SO4)2(OH)6
Comments: White chalky ammonioalunite on darker kaolinite. Location: Schoeller Mine, Kladno, Stredocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kaolinite: Al2Si2O5(OH)4 Pianlinite:
Comments: Off-white colored minute pianlinite (kaolinite) fragment. Location: Pianling, China. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kapustinite: Na5.5Mn0.25ZrSi6O16(OH)2
Comments: Purple-red kapustinite partly covered with white powdery newly formed thermonatrite with violet ussingite. Location: Palitra Pegmatite, Kedykverpakhk Mt., Lovozero, Kola, Russia. Scale: Specimen Size 0.3x1.2 cm. © Diederik Visser
Karchevskyite: [Mg18Al9(OH)54][Sr2(CO3,PO4)9(H2O,H3O)11]
Comments: Colorless hexagonal plates of karchevskyite, co-type material, associated with phlogopite, dolomite, pyrite, and magnetite. Location: Zheleznyi mine, Kovdor Massif, Kola Peninsula, Russia. Scale: See Image. © Rruff Database
Karelianite: V2O3
Comments: Dark bluish-black granular karelianite. Location: Outokumpu, Pohjois-Karjala, Finland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Karibibite: Fe+++2As+++4(O,OH)9
Comments: Orange yellow, radial sprays of karibibite on löllingite to 0.75mm. Location: Galileia, Minas Gerais, Brazil. Scale: picture size 5 mm. © Tom Loomis / Dakota Matrix
Karlite: (Mg,Al)6(BO3)3(OH,Cl)4
Comments: Pale lemon yellow colored translucent crystalline fragment of karlite. Location: Schlegeistal, Zillertaler Alpen, Tirol, Austria. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species