's Image Gallery

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 kupcíkite (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

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: 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-(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

Kurgantaite: CaSr[B5O9]Cl·(H2O)

Comments: Crystal fragment of white kurgantaite on sticky stuff.
Location: Korshunovskoye Deposit, Transbaikal, Irkutsk District, Russia. Scale: Specimen Size 6x3x2 mm.
© Sergey Vasiliev / Systematic Mineralogy

Kurilite: (Ag,Au)2(Te,Se,S)  
Hessite: Ag2Te

Comments: Metallic crystal of hessite on matrix. Hessite is also known as kurilite.
Location: Botes, Zlatna, Transylvania, Romania. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Kurnakovite: MgB3O3(OH)5·5(H2O)

Comments: Very pale lilac-colored crystal of kurnakovite.
Location: Boron, Kramer District, Kern County, California, USA. Scale: 7.2x4x2.5 cm.
© Richard Dale / Dale Minerals

Kurnakovite: MgB3O3(OH)5·5(H2O)

Comments: Chalky white outer alteration, else gray, translucent, coarsely-crystalline kurnakovite.
Location: The Open Pit, Boron, Kern Co., California, USA. Scale: 5x4x3cm.
© Tom Loomis / Dakota Matrix

Kusachiite: CuBi2O4

Comments: Black kusachiite with blue henmilite.
Location: Fuka, Bicchu-cho, Okayama Prefecture, Japan. Scale: Picture Size 0.5 mm.
© Thomas Witzke

Kutnohorite: Ca(Mn,Mg,Fe++)(CO3)2

Comments: Light-pinkish, parallel bundles of kutnohorite crystals on matrix.
Location: Wessels mine, Hotazel, Kuruman District, South Africa. Scale: 5 x 4.7 x 3 cm.
© Fabre Minerals

Kuzmenkoite-Mn: (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O)

Comments: Yellowish brown kuzmenkoite-Mn crystals on matrix, with smaller, more brown colored labuntsovite-Mn.
Location: Mnt Flora, Lovozero, Kola, Russia. Scale: Sample Size 2x3 cm.
© Diederik Visser

Kuzmenkoite-Mn: (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O)  
Calciohilairite: CaZrSi3O9·3(H2O)

Comments: White rhombododecahedral crystals of calciohilairite associated with orange=brown stout prismatic kuzmenkoite-Mn on matrix.
Location: Flora Mt, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: FOV ~1x1 cm.
© Pavel M. Kartashov

Kyanite: Al2SiO5 = Al[6]Al[6]OSiO4

Comments: Two terminated, bright blue crystals of kyanite in a white quartz matrix.
Location: Barra do Salinas, Minas Gerais, Brazil. Scale: 9.5 x 4 x 4 cm.
© Isaias Casanova / IC Minerals

Kyanite: Al2SiO5 = Al[6]Al[6]OSiO4

Comments: Cluster of 4, green, gemmy, fluorescent blades of kyanite.
Location: Pech, Afghanistan. Scale: 1.7 x 1.0 x 0.3 cm.
© Kieth Hayes

Kyanoxalite: Na7(Al5-6Si6-7O24)(C2O4)0.5-1.0·5H2O

Comments: Small aggregate of white kyanoxalite crystals in matrix.
Location: Karnasurt Mt. Lovozero Massif, Kola Peninsula, Russia. Scale: Sample Size 15x8x6 mm.
© Sergey Vasiliev / Systematic Mineralogy