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
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
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
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
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
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
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
Kusachiite: CuBi2O4
Comments: Black kusachiite with blue henmilite. Location: Fuka, Bicchu-cho, Okayama Prefecture, Japan. Scale: Picture Size 0.5 mm. © Thomas Witzke
Kyzylkumite: V+++2Ti3O9
Comments: A small crystal of kyzylkumite with a triangular face. Location: Koscheka U Deposit, Auminzatau Mtns., Central Kyzylkum Region, Kyzylkum Desert, Uzbekistan. Scale: Picture size 1 mm. © Thomas Witzke / Abraxas-Verlag