Mineral Information and Data:

Chalcomenite
CuSe4+O3 • 2H2O [CNMNC approved formula]

Named From the Greek for copper and moon.

IMA status : Valid species (Pre-IMA 1881) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
34.02.02.01  
  (34) Selenites - Tellurites - Sulfites
  (34.02) as A++ XO3 · x(H2O)
  (34.02.02) Chalcomenite Group (Orthorhombic)
  
Nickel-Strunz
(10th edition) :
04.JH.05
  (04) Oxides and Hydroxides
  (04.J) Arsenites, Antimonites, Bismuthites, Sulfites,
  (04.JH) Selenites without additional anions, with H2O
  
Crystal system: Orthorhombic System
Point group (H-M): 222 — disphenoidal
  
  
  

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