Mineral Information and Data:

Bornhardtite
Co3Se4 [CNMNC approved formula]

Named after Dr. Wilhelm Bornhardt (1864-?), German student of ore deposits.

IMA status : Valid species (Pre-IMA 1955) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
02.10.01.05  
  (02) Sulfides - Including Selenides and Tellurides
  (02.10) where Am Bn Xp, with (m+n):p=3:4
  (02.10.01) Linnaeite Group (Isometric: Fd3m)
  
Nickel-Strunz
(10th edition) :
02.DA.05
  (02) Sulfides
  (02.D) Metal Sulfides, M:S = 3:4 and 2:3
  (02.DA) M:S = 3:4
  
Crystal system: Cubic System
Point group (H-M): m3m (or 4/m 3 2/m) — hexoctahedral
  
  
  

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