Brunogeierite

Brunogeierite


Composition: Fe2+2Ge4+O4
Crystal System : Cubic
Colours: Grey-black
Lustre : Sub-metallic
Hardness : 5
Specific Gravity : 5.51
Year of Discovery: 1972
IMA Number: 1972-004
IMA Status: Redefined
Discovered By: Bruno H. Geier (Tsumeb mineralogist)
Named for: Discoverer