Mineral Information and Data:

Phaunouxite
Ca3(AsO4)2 • 11H2O [CNMNC approved formula]

Named from Phaunoux, the French name for the Rauenthal Valley, France, within which the mineral was first found.

IMA status : Approved Species 1982 ()
CLASSIFICATION 
Dana
(8th edition) :
40.03.12.01  
  (40) Hydrated Phosphates
  (40.03) where (A++)3 (XO4)2 · x(H2O)
  (40.03.12)
  
Nickel-Strunz
(10th edition) :
08.CJ.40
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CJ) With only large cations
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
  

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