Geographic Minerals

Kunzite is a pink to lilac colored gemstone, a variety of spodumene with the color coming from minor to trace amounts of manganese. It is…

Kerolite or Cerolite is a metamorphic nickel bearing phyllosilicate mineral variety of talc, can be seen as a mixture of serpentine and saponite as well.…

Kyanite is an attractive mineral that has a near sapphire-like blue color in some, particularly nice specimens. It is naturally a blue aluminosilicate mineral, usually…

Kutnohorite is a rare calcium manganese carbonate mineral with magnesium and iron that is a member of the dolomite group. It is a rare calcium…

Kurnakovite is a hydrated borate of magnesium with the chemical composition MgB3O3(OH)5·5H2O. This material consisting of hydrous borate of magnesium. It is a member of…

Kuratite, named for Dr. Gero Kurat (1938–2009), meteorite researcher and Curator of the Meteorite Collection at the Vienna Natural History Museum, was first recognized as…

Kukharenkoite-(Ce) is a barium cerium fluoride carbonate mineral, formula Ba2CeF(CO3)3. It was identified from samples found in the Mont-Saint-Hilaire alkaline intrusive complex, Quebec, and the…

Krutovite is a cubic nickel diarsenide with a chemical composition of NiAs2 and a sulfur content of 0.02-0.34 weight percent. It is a cubic nickel…

Krut’aite (also spelled Krutaite) is a rare mineral with the formula CuSe2. It crystallizes in the cubic crystal system. It has no industrial use, but…

Krotite is a natural mineral composed of calcium, aluminum and oxygen, with the molecular formula CaAl2O4. It was reported in 2011 in a calcium-aluminum-rich inclusion…

Kröhnkite, [Formula- Na2Cu(SO4)2•2H2O] is a rare copper sulfate mineral. It is an uncommon mineral that is secondary to the oxidized zone of copper deposits, typically…

Krieselite is a newly discovered naturally occurring mineral. It is the germanate analog of topaz. The type of material occurs in tiny vugs in tennantite/chalcocite/Galena/germanite…