Mineral Information and Data:

Haapalaite
2[(Fe,Ni)S] • 1.61[(Mg,Fe)(OH)2] [CNMNC approved formula]

Named for Paavo Haapala (1906-), Finnish geologist.

IMA status : Approved Species 1973 ()
CLASSIFICATION 
Dana
(8th edition) :
02.14.03.01  
  (02) Sulfides - Including Selenides and Tellurides
  (02.14) (Hydroxyl or Hydrated)
  (02.14.03)
  
Nickel-Strunz
(10th edition) :
02.FD.30
  (02) Sulfides
  (02.F) Sulfides of Arsenic, Alkalies; Sulfides with Halide, Oxide, Hydroxide, H2O
  (02.FD) With O, OH, H2O
  
Crystal system: Trigonal System
Point group (H-M): 3m (or 3 2/m) — hexagonal-scalenohedral
  
  
  

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