Mineral Information and Data:

Cassidyite
Ca2Ni(PO4)2 • 2H2O [CNMNC approved formula]

Named for William A. Cassidy, who mapped the Wolf Creek, Australia, crater in 1953.

IMA status : Approved Species 1967 ()
CLASSIFICATION 
Dana
(8th edition) :
40.02.02.04  
  (40) Hydrated Phosphates
  (40.02) where A++ (B++)2 (XO4) · x(H2O)
  (40.02.02) Fairfieldite Subgroup (Triclinic: P1)
  
Nickel-Strunz
(10th edition) :
08.CG.05
  (08) Phosphates, Arsenates, Vanadates
  (08.C) Phosphates without Additional Anions, with H2O
  (08.CG) With large and medium-sized cations, RO4:H2O = 1:1
  
Crystal system: Triclinic System
Point group (H-M): 1 — pinacoidal
  
  
Geologic Setting: Alteration product of a highly weathered iron-nickel meteorite, formed by alteration of schreibersite.
  

<<< BACK TO MINERAL SEARCH