Mineral Information and Data:

Changchengite
IrBiS [CNMNC approved formula]

Named after chancheng, the name of the "Great Wall" of China.

IMA status : Approved Species 1997 ()
CLASSIFICATION 
Dana
(8th edition) :
02.12.03.14  
  (02) Sulfides - Including Selenides and Tellurides
  (02.12) where Am Bn Xp, with (m+n):p=1:2
  (02.12.03) Cobaltite Group (Cubic or pseudocubic crystals)
  
Nickel-Strunz
(10th edition) :
02.EB.25
  (02) Sulfides
  (02.E) Metal Sulfides, M:S = 1:2
  (02.EB) M:S = 1:2, with Fe, Co, Ni, PGE, etc.
  
Crystal system: Cubic System
Point group (H-M): 23 — tetartoidal
  
  
  

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