Knorringite: Properties and Occurrences
Knorringite is a mineral species belonging to the garnet group and forms a series with the species pyrope. It is a green or blue mineral…
Geographic Minerals
Knebelite – Physical Properties
Knebelite is a manganese variety of the fayalite-tephroite series with formula (Fe, Mn)2SiO4. It forms dark green orthorhombic crystals. It is a variety of Fayalite-Tephroite…
Kleinite: Properties and Occurrences
Kleinite is a rare mineral that has only been found in the United States and Germany that occurs in hydrothermal mercury deposits. It is a…
Kinoite: Properties and Occurrences
Kinoite [Ca2Cu2Si3O8(OH)4] or [Ca2Cu2Si3O10·2H3O] is a light blue copper silicate mineral. It is somewhat scarce. It is a monoclinic-prismatic azure blue mineral containing calcium, copper,…
Kieserite: Properties and Occurrences
Kieserite is the magnesium sulfate mineral (MgSO4·H2O) and is named after Dietrich Georg von Kieser (Jena, Germany 1862). It is a fine-grained white mineral consisting…
Khatyrkite: Properties and Occurrences
Khatyrkite is a rare mineral which is mostly composed of copper and aluminum but may contain up to about 15% of zinc or iron. Its…
Keyite: Properties and Occurrences
Keyite is a mineral with the chemical formula Cu32+Zn4Cd2(AsO4)6·2H2O. It is a monoclinic-prismatic azure mineral containing arsenic, cadmium, calcium, copper, hydrogen, manganese, oxygen, and zinc.…
Kesterite: Properties and Occurrences
Kesterite is a sulfide mineral with a formula Cu2(Zn, Fe)SnS4. In its lattice structure, zinc and iron atoms share the same lattice sites. It is…
Kernite: Properties and Occurrences
Kernite, also known as rasorite is a hydrated sodium borate hydroxide mineral with formula Na2B4O6(OH)2·3H2O. It is a colorless to white mineral crystallizing in the…
Kermesite: Properties and Occurrences
Kermesite or antimony oxysulfide is also known as red antimony (Sb2S2O). It is an unusual sulfide mineral. The mineral’s color ranges from cherry red to…
Keilite: Properties and Occurrences
Keilite is an iron-magnesium sulfide mineral [chemical formula- (Fe, Mg)S)] that is found in enstatite chondrites. It is an isometric-hexoctahedral gray mineral containing calcium, chromium,…
Kegelite: Properties and Occurrences
Kegelite is a complex silicate mineral with formula Pb8Al4Si8O20(SO4)2(CO3)4(OH)8. It is a monoclinic mineral containing aluminum, carbon, hydrogen, lead, oxygen, silicon, and sulfur. It was…
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