Mineral Information and Data:

Osmium
Os [CNMNC approved formula]

Named for the principle element in the composition.

IMA status : Approved Species 1804 ()
CLASSIFICATION 
Dana
(8th edition) :
01.02.02.01  
  (01) Native Elements
  (01.02) with platinum group metals and alloys
  (01.02.02) Osmium group (Space Group P63/mmc)
  
Nickel-Strunz
(10th edition) :
01.AF.05
  (01) Elements
  (01.A) Metals and Intermetallic Alloys
  (01.AF) Platinum group elements
  
Crystal system: Hexagonal System
Point group (H-M): 6/mmm (or 6/m 2/m 2/m) — dihexagonal-dipyramidal
  
  
  

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