Mineral Information and Data:

Cernyite
Cu2CdSnS4 [CNMNC approved formula]

Named for Dr. Cerny, mineralogist at the University of Manitoba, Winnipeg, Canada.

IMA status : Approved Species 1978 ()
CLASSIFICATION 
Dana
(8th edition) :
02.09.02.02  
  (02) Sulfides - Including Selenides and Tellurides
  (02.09) where Am Bn Xp, with (m+n):p=1:1
  (02.09.02) Stannite Group (Tetragonal: I-42m) A2BCS type
  
Nickel-Strunz
(10th edition) :
02.CB.15a
  (02) Sulfides
  (02.C) Metal Sulfides, M:S = 1:1 (and similar)
  (02.CB) With Zn, Fe, Cu, Ag, etc.
  
Crystal system: Tetragonal System
Point group (H-M): 42m (or 4 2m) — scalenohedral
  
  
  

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