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Kochsandorite: CaAl2(CO3)2(OH)4·H2O
Comments: White fibers of kochandorite on coal-marl matrix. Location: Mány coal field, Tatabánya, Hungary. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Kogarkoite: Na3(SO4)F
Comments: Pale green granular mass of kogarkoite with yellow native sulfur. Location: Vulcano, Sicily, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Koktaite: (NH4)2Ca(SO4)2·(H2O)
Comments: Tan to white scaly coating of koktaite. Location: Zastavka, near Brna, Vychodocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kolicite: Mn7Zn4(AsO4)2(SiO4)2(OH)8
Comments: Minute orange crystal of kolicite in franklinite. Location: Sterling Mine, Ogdensburg, Sussex County, New Jersey, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kolovratite: Hydrous vanadate of Ni and Zn
Comments: Aqua-colored botryoidal crust of kolovratite. Location: Mina Ojuela, Mapimi, Durango, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Komarovite: (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2·3.5(H2O)
Comments: Pale pink crystalline komarovite vein in syenite rock. Location: Mount Karnasurt, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Koninckite: Fe+++PO4·3(H2O) (?)
Comments: Pale pink botryoidal crust of koninckite on rock. Location: Richelle, Liege, Belgium. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Konyaite: Na2Mg(SO4)2·5(H2O)
Comments: white powdery konyaite. Location: Great Konya Basin, Konya, Turkey. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Koritnigite: ZnHAsO4·(H2O)
Comments: Translucent nearly colorless fragment of koritnigite. Location: Tsumeb, Oshikoto, Namibia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Kornerupine: (Mg,Fe++)4Al6(SiO4,BO4)5(O,OH)2
Comments: Greenish gray mottled crystal prism of kornerupine. Location: Western Hart's Range, Northern Territory, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species