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Category Selenide mineral
(repeating unit)
Strunz classification 2.CB.05a
Dana classification
Crystal system Isometric
Crystal class Hextetrahedral (43m)
H-M symbol: (4 3m)
Space group F43m
Color Steel-gray to black
Crystal habit Massive and as euhedral crystals
Cleavage none
Mohs scale hardness 2.5
Luster Metallic
Streak grayish black
Diaphaneity opaque
Specific gravity 8.19 - 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[edit]


  • 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[edit]

Media related to Tiemannite at Wikimedia Commons