Geographic Minerals

Kovdorskite: Properties and Occurrences

Kovdorskite: Properties and Occurrences

Kovdorskite, Formula: Mg2PO4(OH)·3H2O, is a rare, hydrated, magnesium phosphate mineral. It is a monoclinic-prismatic mineral containing carbon, hydrogen, magnesium, oxygen, and phosphorus. It was first described by Kapustin et al. and is found only in the Kovdor Massif near Kovdor, Kola Peninsu.....

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Köttigite: Properties and Occurrences

Köttigite: Properties and Occurrences

Köttigite is a rare hydrated zinc arsenate which was discovered in 1849 and named by James Dwight Dana in 1850 in honor of Otto Friedrich Köttig (1824 – 1892), a German chemist from Schneeberg, Saxony, who made the first chemical analysis of the mineral. It has the formula Zn3(AsO4)2·8H2.....

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Kostovite: Properties and Occurrence

Kostovite: Properties and Occurrence

Kostovite is a rare orthorhombic-pyramidal gray-white telluride mineral containing copper and gold with chemical formula AuCuTe4. It was discovered by Bulgarian mineralogist Georgi Terziev (1935–1972), who named it in honor of his professor Ivan Kostov (1913–2004). In 1965 kostovite was appro.....

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Kosmochlor: Properties and Occurrence

Kosmochlor: Properties and Occurrence

Kosmochlor is a rare chromium sodium clinopyroxene with the chemical formula NaCr3+Si2O6. It is a monoclinic-prismatic emerald green mineral containing chromium, oxygen, silicon, and sodium. The name is from German kosmisch, for its occurrence in meteorites, and the Greek color, for green. It was.....

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Kornerupine: Properties and Occurrences

Kornerupine: Properties and Occurrences

Kornerupine also known as Prismatine, is a rare boro-silicate mineral with the formula (Mg, Fe2+)4 (Al, Fe3+)6 (SiO4, BO4)5 (O, OH)2. The color can vary from brown, green to shades of yellow, the material is strongly pleochroic and frequently asteriated. Kornerupine is valued as a gemstone whe.....

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Kolbeckite: Properties and Occurrences

Kolbeckite: Properties and Occurrences

Kolbeckite (scandium phosphate dihydrate) is a mineral with formula: ScPO4·2H2O. It is a mineral consisting of a hydrous silicate and phosphate of beryllium, aluminum, and calcium. It was discovered originally at Schmiedeberg, Saxony, Germany in 1926 and is named after Friedrich L. W. Kolbeck, a.....

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Kogarkoite: Properties and Occurrences

Kogarkoite: Properties and Occurrences

Kogarkoite is a sodium sulfate fluoride mineral with formula Na3(SO4)F. It is a pale blue monoclinic mineral. The crystal is monoclinic and is a type of naturally occurring antiperovskite. Kogarkoite is named after the Russian petrologist Lia Nikolaevna Kogarko (born 1936) who discovered the mine.....

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Kochite: Properties and Occurrences

Kochite: Properties and Occurrences

Kochite is a rare silicate mineral with a chemical formula of (Na, Ca)3Ca2(Mn, Ca)ZrTi [(F, O)4(Si2O7)2 or double that. It is a triclinic-pinacoidal mineral containing aluminum, calcium, cerium, fluorine, hafnium, iron, lanthanum, manganese, niobium, oxygen, silicon, sodium, strontium, titanium, .....

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Kobellite: Properties and Occurrences

Kobellite: Properties and Occurrences

Kobellite [Pb22Cu4(Bi, Sb)30S69] is a gray, fibrous, metallic mineral. It is also a sulfide mineral consisting of antimony, bismuth, and lead. The mineral can be found in ores and deposits of Hvena, Sweden; Ouray, Colorado; and Wake County, North Carolina, US. The mineral was named after Wolfgang.....

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Knorringite: Properties and Occurrences

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 of the garnet group, forming a series with pyrope. Synthetic knorringite has the pure endmember formula Mg3Cr2(SiO4)3. It was discovered in 1968 in the Kao kimb.....

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Knebelite – Physical Properties

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 Series. It is a silicate mineral, a manganese variety of fayalite that forms dark green orthorhombic crystals. It is repor.....

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Kleinite: Properties and Occurrences

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 mineral consisting of a basic oxide, sulfate, and chloride of mercury and ammonium. Kleinite is named after Carl Klein (1842–1907), who was a professor of m.....

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