Brunogeierite Mineral Data

General Brunogeierite Information
Chemical Formula:	(Ge++,Fe++)Fe+++2O4
Composition:	Molecular Weight = 244.11 gm
	Iron 51.47 % Fe 7.36 % FeO / 65.42 % Fe₂O₃
	Germanium 22.31 % Ge 32.14 % GeO₂
	Oxygen 26.22 % O
	______ ______
	100.00 % 104.92 % = TOTAL OXIDE
Empirical Formula:	Ge_0.75Fe²⁺_0.25Fe³⁺₂O₄
Environment:	In the lower oxidation zone of a dolostone-hosted hydrothermal polymetallic ore deposit, at a depth of 930 meters. Encrusting tennantite and inclusions in sphalerite and magnetite.
IMA Status:	Approved IMA 1972
Locality:	From Tsumeb, Namibia. Link to MinDat.org Location Data.
Name Origin:	For Dr. Bruno H. Geier (1902- ), formerly Chief Mineralogist, Tsumeb Corporation, Tsumeb, Namibia.
Name Pronunciation:	Brunogeierite + Pronunciation