Mineral Information and Data:

Butschliite
K2Ca(CO3)2 [CNMNC approved formula]

Named for Johann Adam Otto Butschli (1848-1920), professor of zoology, Heidelberg, Germany, who studied the double carbonates of K and Ca.

IMA status : Valid species (Pre-IMA 1947) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
14.03.01.01  
  (14) Anhydrous Carbonates
  (14.03) with Compound Formula A+2 B++ (CO3)2
  (14.03.01)
  
Nickel-Strunz
(10th edition) :
05.AC.15
  (05) Carbonates and Nitrates
  (05.A) Carbonates without additional anions, without H2O
  (05.AC) Alkali and alkali-earth carbonates
  
Crystal system: Trigonal System
Point group (H-M): 3m (or 3 2/m) — hexagonal-scalenohedral
  
  
  

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