Briartite

Last updated
Briartite
General
Category Minerals
Formula Cu2(Fe,Zn)GeS4
IMA symbol Btt [1]
Strunz classification 02.KA.10(02)
Dana classification 2.9.2.3.(02)
Crystal system Tetragonal
Space group 07;10
Unit cell 297.46 ų
Identification
ColourGray to gray blue; Iron-grey
Twinning Polysynthetic
Mohs scale hardness3.5–4.5
Luster Metallic; Unpolished
Diaphaneity Opaque
Specific gravity 4.337 (Calculated)
Density 4.337 g/cm3 (Calculated)
Common impuritiesGa, Sn

Briartite is an opaque iron-grey metallic sulfide mineral, Cu2(Zn,Fe)GeS4 with traces of Ga and Sn, found as inclusions in other germanium-gallium-bearing sulfides. [2]

It was discovered at the Prince Léopold Mine, Kipushi, Shaba, Congo (Léopoldville) in 1965 by Francotte and others, and named for Gaston Briart who had studied formations at Kipushi. [3]

Briartite is also found in Namibia, Greece, and Spain. [4]

See also

References

  1. ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi: 10.1180/mgm.2021.43 . S2CID   235729616.
  2. ↑ "Briartite". www.mindat.org. Retrieved 2021-02-09.
  3. ↑ "New Mineral Names" (PDF). Mineral Society of America. Archived (PDF) from the original on 2012-07-23. Retrieved 9 February 2021.
  4. ↑ "Briartite" (PDF). Handbook of Mineralogy. Archived (PDF) from the original on 2011-07-09. Retrieved 9 February 2021.


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