Mineral Information and Data:

Seinajokite
FeSb2 [CNMNC approved formula]

Named for the locality: In the Seinäjoki deposit, Vaasa, Finland.

IMA status : Approved Species 1976 ()
CLASSIFICATION 
Dana
(8th edition) :
02.12.02.10  
  (02) Sulfides - Including Selenides and Tellurides
  (02.12) where Am Bn Xp, with (m+n):p=1:2
  (02.12.02) Marcasite Group (Orthorhombic: Pnnm)
  
Nickel-Strunz
(10th edition) :
02.EB.15b
  (02) Sulfides
  (02.E) Metal Sulfides, M:S = 1:2
  (02.EB) M:S = 1:2, with Fe, Co, Ni, PGE, etc.
  
Crystal system: Orthorhombic System
Point group (H-M): mmm (or 2/m 2/m 2/m) — dipyramidal
  
  
  

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