Mineral Information and Data:

Elpasolite
K2NaAlF6 [CNMNC approved formula]

Named for the locality: St Peters Dome, El Paso County, Colorado, USA.

IMA status : Valid species (Pre-IMA 1883) Grandfathered
CLASSIFICATION 
Dana
(8th edition) :
11.06.02.01  
  (11) Halide Complexes; Alumino-fluorides
  (11.06) with miscellaneous formulae
  (11.06.02)
  
Nickel-Strunz
(10th edition) :
03.CB.15
  (03) Halides
  (03.C) Complex Halides
  (03.CB) Neso-aluminofluorides
  
Crystal system: Cubic System
Point group (H-M): m3m (or 4/m 3 2/m) — hexoctahedral
  
  
  

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