Briartite Knowpia

Briartite
Briartite
General
Category	Mineral
Formula; (repeating unit)	Cu2(Fe,Zn)GeS4
IMA symbol	Btt
Strunz classification	02.KA.10(02)
Dana classification	2.9.2.3.(02)
Crystal system	Tetragonal
Space group	07;10
Unit cell	297.46 Å³
Identification
Colour	Gray to gray blue; Iron-grey
Twinning	Polysynthetic
Mohs scale hardness	3.5–4.5
Luster	Metallic; Unpolished
Diaphaneity	Opaque
Specific gravity	4.337 (Calculated)
Density	4.337 g/cm3 (Calculated)
Common impurities	Ga, 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]

References edit

^ 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.
^ "Briartite". www.mindat.org. Retrieved 2021-02-09.
^ "New Mineral Names" (PDF). Mineral Society of America. Archived (PDF) from the original on 2012-07-23. Retrieved 9 February 2021.
^ "Briartite" (PDF). Handbook of Mineralogy. Archived (PDF) from the original on 2011-07-09. Retrieved 9 February 2021.

[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.

[2]

[1]

[3]

[4]

Summary

See also edit

References edit