Science

Langite is a rare hydrated copper sulfate mineral, with hydroxyl, found almost exclusively in druses of small crystals. It is a mineral [Cu4(SO4)(OH)6·2H2O] composed of…

Langbeinite is a potassium magnesium sulfate mineral with the chemical formula K2Mg2(SO4)3. Langbeinite crystallizes in the isometric-tetartoidal system as transparent colorless or white with pale…

Lanarkite is a mineral, a form of lead sulfate with formula Pb2(SO4)O. It is a mineral consisting of sulphate of lead, occurring either massive or…

Labradorite is a Feldspar mineral (formula: [(Ca, Na)(Al, Si)4O8], which is the most abundant group of minerals that can be found in the earth’s crust.…

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…