Mineral Information and Data:

Crednerite
CuMnO2 [CNMNC approved formula]

Named for Karl F. H. Credner (1809-1876), German mining geologist and mineralogist.

IMA status : Valid species (Pre-IMA 1849) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
07.01.02.01  
  (07) Multiple Oxides
  (07.01) where A B X2 containing copper
  (07.01.02)
  
Nickel-Strunz
(10th edition) :
04.AB.05
  (04) Oxides and Hydroxides
  (04.A) Metal:Oxygen = 2.1 and 1:1
  (04.AB) M:O = 1:1 (and up to 1:1.25); with small to medium-sized cations only
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  

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