Mineral Information and Data:

Calkinsite-(Ce)
Ce2(CO3)3 • 4H2O [CNMNC approved formula]

Named for Frank Cathcart Calkins (1878-1974), geologist with the U.S. Geological Survey.

IMA status : Approved Species 1953 ()
CLASSIFICATION 
Dana
(8th edition) :
15.04.01.01  
  (15) Hydrated Carbonates
  (15.04)
  (15.04.01)
  
Nickel-Strunz
(10th edition) :
05.CC.25
  (05) Carbonates and Nitrates
  (05.C) Carbonates without Additional Anions, with H2O
  (05.CC) With rare earth elements (REE)
  
Crystal system: Orthorhombic System
Point group (H-M): 222 — disphenoidal
  
  
  

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