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Category Telluride mineral
(repeating unit)
Strunz classification 2.EA.15 (10 ed)
2/D.16-10 (8 ed)
Dana classification
Crystal system Orthorhombic
Crystal class Pyramidal (mm2)
H-M Symbol: (mm2)
Space group Pma2
Color Grayish white
Twinning Fine lamellar
Cleavage Distinct/good
Tenacity Brittle
Mohs scale hardness 2 - 2.5
Luster Metallic
Diaphaneity Opaque
Specific gravity 7.94
Optical properties Anisotropic
Pleochroism Visible
References [1][2][3][4][5]

Kostovite is a rare orthorhombic-pyramidal gray white telluride mineral containing copper and gold with chemical formula AuCuTe4.[1][2][3]

Exhibition of Kostovite in the National Natural History Museum, Sofia, Bulgaria

It was discovered by Bulgarian mineralogist Georgi Terziev (Георги Терзиев) (1935–1972), who named it in honor of his professor Ivan Kostov (Иван Костов) (1913–2004).[6][7] In 1965 kostovite was approved as a new species by the International Mineralogical Association.[8] The type locality is the Chelopech copper ore deposit, Bulgaria.[9] Small deposits have also been found in Kochbulak (Eastern Uzbekistan), Commoner mine (Zimbabwe), Kamchatka (Russian Far East), Ashanti (Ghana), Buckeye Gulch (Leadville, Colorado, US), Bisbee (Arizona, US),[10] Kutemajärvi (Finland), Coranda-Hondol (Romania), Glava (Sweden), Bereznjakovskoje (Southern Urals, Russia), Moctezuma (Sonora, Mexico), Panormos Bay (Tinos Island, Greece), Guilaizhuang Mine, Tongshi complex (Linyi Prefecture, Shandong Province, China), Kalgoorlie-Boulder City, (Goldfields-Esperance region, Western Australia, Australia).[11]

See also[edit]

List of minerals named after people


Further reading[edit]

  • G. Van Tendeloo; S. Amelinckx (1986). "High-resolution electron-microscopic study of the modulated structure of kostovite". Acta Crystallographica. 42: 121–130. doi:10.1107/S0108768186098488.