Freibergite is a complex
sulfosalt mineral of
silver,
copper,
iron,
antimony and
arsenic with formula . It has
cubic
Cubic may refer to:
Science and mathematics
* Cube (algebra), "cubic" measurement
* Cube, a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex
** Cubic crystal system, a crystal system w ...
crystals and is formed in
hydrothermal deposits. It forms one
solid solution series with
tetrahedrite and another with
argentotennantite. Freibergite is an opaque, metallic steel grey to black and leaves a reddish-black streak. It has a
Mohs hardness of 3.5 to 4.0 and a
specific gravity of 4.85 - 5. It is typically massive to granular in habit with no cleavage and an irregular fracture.
The mineral was first described in 1853 from an occurrence in the silver mines of the
type locality
Type locality may refer to:
* Type locality (biology)
* Type locality (geology)
See also
* Local (disambiguation)
* Locality (disambiguation)
{{disambiguation ...
at
Freiberg, Saxony.
References
Mineral handbookWebmineral
Silver minerals
Iron minerals
Copper minerals
Arsenic minerals
Antimony minerals
Sulfosalt minerals
Freiberg
Cubic minerals
Minerals in space group 217
Minerals described in 1853
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