's Image Gallery

Kipushite: (Cu,Zn)5Zn(PO4)2(OH)6·(H2O)

Comments: Prismatic emerald green microcrystals of kipushite on quartz.
Location: Snowshoe Claim, near Battle Mountain, Lander County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kirschsteinite: CaFe++SiO4

Comments: Grayish green crystalline massive kirschsteinite.
Location: Mazarron, Murcia, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kitaibelite: Ag10PbBi30S51  
Pavonite: (Ag,Cu)(Bi,Pb)3S5

Comments: Steel-gray metallic massive pavonite (kitaibelite is discredited as Pb-bearing pavonite).
Location: Near Charcas, San Luis Potosi, Mexico. Scale: See Image.
© Rruff Database

Kitkaite: NiTeSe  
Penroseite: (Ni,Co,Cu)Se2  
Sederholmite: NiSe

Comments: B&W polished section image showing kitkaite replacing calcite in penroseite, clausthalite and sederholmite. Note the absence of the clausthalite envelope around kitkaite..
Location: Valley of the Kitka river in Kuusamo, northeast Finland. (AmMin, v50:581). Scale: 100 X.
© American Mineralogist

Kivuite: (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8·7(H2O)  
Dewindtite: Pb3[H(UO2)3O2(PO4)2]2·12(H2O)

Comments: Pale yellow coatings of kivuite with yellowier dewindtite on pegmatite.
Location: Ruggles Mine, Grafton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kladnoite: C6H4(CO)2NH

Comments: Glassy prismatic colorless kladnoite crystals on matrix.
Location: Kladno, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Klebelsbergite: Sb+++4O4(OH)2(SO4)

Comments: Small, acicular sprays of klebelsbergite with yellow crystals of sulfur on stibnite.
Location: Pereta Mine, Grosseto Province, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Kleinite: Hg2N(Cl,SO4)·n(H2O)

Comments: Crystalline druse of bright canary yellow kleinite on matrix.
Location: McDermmitt, Humboldt County, Nevada. USA. Scale: Crystal size 1-2 mm.
© John Veevaert

Klockmannite: CuSe

Comments: Klockmannite intergrown with covellite on quartz.
Location: Lichtenberg Mine, Ronneburg U Deposit, Gera district, Thuringia, Germany. Scale: Picture size 7.5 mm.
© Thomas Witzke / Abraxas-Verlag

Klockmannite: CuSe  
Fischesserite: Ag3AuSe2

Comments: Pinkish-grey fischesserite (Fl) with fine-grained bluish-grey klockmannite (Kl) and grey clausthalite (Cl). Polished section from microprobe analysis in reflected light, parallel nicols.
Location: Predborice, Bohemia, Czech Republic. Scale: Picture size 0.7 mm.
© Thomas Witzke

Klyuchevskite: K3Cu3(Fe+++,Al)O2(SO4)4  
Klyuchevskite-Duplicate: K3Cu3Fe+++O2(SO4)4

Comments: Clusters of dark green radiating prismatic klyuchevskite crystals associated with langbeinite, co-type sample. Klyuchevskite-duplicate is the same mineral with different Dana numbers.
Location: Yadevitaya fumarole, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

Klyuchevskite-Duplicate: K3Cu3Fe+++O2(SO4)4  
Klyuchevskite: K3Cu3(Fe+++,Al)O2(SO4)4

Comments: Clusters of dark green radiating prismatic klyuchevskite crystals associated with langbeinite, co-type sample. Klyuchevskite-duplicate is the same mineral with different Dana numbers.
Location: Yadevitaya fumarole, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: See Image.
© Rruff Database

Knasibfite: K3Na4[SiF6]3[BF4]

Comments: SEM image of knasibfite crystals (CanMin; v46:449).
Location: La Fossa crater, Vulcano Island, Aeolian Archipelago, Sicily, Italy. Scale: See Image.
© Canadian Mineralogist

Koashvite: Na6(Ca,Mn)(Ti,Fe)Si6O18·(H2O)

Comments: Brown translucent crystalline fragment of koashvite.
Location: Mount Koashva, Khibiny Massive, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kobeite-(Y): (Y,U)(Ti,Nb)2(O,OH)6 (?)

Comments: Subparallel aggregate of black, tabular, euhedral kobeite-(Y) crystals in matrix.
Location: Ohro, Kobe, Kyoto, Japan. Scale: Picture size 5 mm.
© Paul M. Schumacher

Kobellite: Pb22Cu4(Bi,Sb)30S69

Comments: Dark gray metallic crystalline kobellite with quartz.
Location: Crabtree Quarry, Raleigh, Wake County, North Carolina, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kochkarite: PbBi4Te7

Comments: Bright silvery veinlets of kochkarite throughout matrix.
Location: Kochkar' Au deposit, Plast, Urals Region, Russia. Scale: Overall: 2.5 x 2 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Kochsandorite: CaAl2(CO3)2(OH)4·H2O

Comments: Pearly circles of radiating white microcrystals of kochsandorite on coal.
Location: Many coal deposit, Bicske-Zsambeki Basin, Tatabanya. Scale: 2.5x1.7x1.1 cm.
© Richard Dale / Dale Minerals

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

Koechlinite: Bi2MoO6

Comments: Greenish yellow crystal of koechlinite on quartz.
Location: Adam Heber Mine, Neustädtel, Schneeberg district, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag