Mineral Information and Data:

Chalconatronite
Na2Cu(CO3)2 • 3H2O [CNMNC approved formula]

Named after the composition, copper and natron (soda).

IMA status : Valid species (Pre-IMA 1955) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
15.02.03.01  
  (15) Hydrated Carbonates
  (15.02) where A+m B++n (XO3)p · x(H2O), (m+n):p > 1:1
  (15.02.03)
  
Nickel-Strunz
(10th edition) :
05.CB.40
  (05) Carbonates and Nitrates
  (05.C) Carbonates without Additional Anions, with H2O
  (05.CB) With large cations (alkali and alkali-earth carbonates)
  
Crystal system: Monoclinic System
Point group (H-M): 2/m — prismatic
  
  
  
Other Properties: H2O Soluble.

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