Chemistry:Tiemannite

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Tiemannite
Tiemannit.jpg
General
CategorySelenide mineral
Formula
(repeating unit)
HgSe
Strunz classification2.CB.05a
Dana classification02.08.02.04
Crystal systemIsometric
Crystal classHextetrahedral (43m)
H-M symbol: (4 3m)
Space groupF43m
Identification
ColorSteel-gray to black
Crystal habitMassive and as euhedral crystals
Cleavagenone
Mohs scale hardness2.5
|re|er}}Metallic
Streakgrayish black
Diaphaneityopaque
Specific gravity8.19 - 8.47
References[1][2]

Tiemannite is a mineral, mercury selenide, formula HgSe. It occurs in hydrothermal veins associated with other selenides, or other mercury minerals such as cinnabar, and often with calcite. Discovered in 1855 in Germany, it is named after Johann Carl Wilhelm Tiemann (1848–1899).

See also

References

  • Tiemannite from a micro-disseminated gold deposit in Qiongmo, Liu Jiajun, Zheng Minghua, Liu Jianming, Lu Wenquan, Journal of Chengdu Institute of Technology, vol. 23 (2), pages 21–28 (1996)
  • Timanite and onofrite in ores of Siberian mercury deposits, Vasil'yev V.I., Lavrent'yev Y.G., Doklady (Academy of Sciences of the USSR, Earth Sciences Section) vol. 222, Pages 159-162 (1975).

External links