Tiemannite
Encyclopedia
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 C. W. Tiemann (1848–1899).
Vein (geology)
In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation...
associated with other selenides, or other mercury
Mercury (element)
Mercury is a chemical element with the symbol Hg and atomic number 80. It is also known as quicksilver or hydrargyrum...
minerals such as cinnabar
Cinnabar
Cinnabar or cinnabarite , is the common ore of mercury.-Word origin:The name comes from κινναβαρι , a Greek word most likely applied by Theophrastus to several distinct substances...
, and often with calcite
Calcite
Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate . The other polymorphs are the minerals aragonite and vaterite. Aragonite will change to calcite at 380-470°C, and vaterite is even less stable.-Properties:...
. Discovered in 1855 in Germany, it is named after C. W. Tiemann (1848–1899).