Mineral Information and Data:

Barringerite
(Fe,Ni)2P [CNMNC approved formula]

Named for Daniel M. Barringer (1860-1929), U.S. Mining engineer, who established the meteoritic origin of Meteor Crater, Arizona.

IMA status : Approved Species 1969 (IMA1968-037)
CLASSIFICATION 
Dana
(8th edition) :
01.01.21.01  
  (01) Native Elements
  (01.01) with metallic elements other than the platinum group
  (01.01.21) Barringerite Group phosphides
  
Nickel-Strunz
(10th edition) :
01.BD.10
  (01) Elements
  (01.B) Metallic Carbides, Silicides, Nitrides and
  (01.BD) Phosphides
  
Crystal system: Hexagonal System
Point group (H-M): 6m2 (or 6m2) — ditrigonal-dipyramidal
Space group: P62m
Unit cell: a = 5.87Å, c = 3.44Å
Crystal Habit: As bands, 10–15 μm wide and several hundred μm long, consisting of individual grains less than 1 μm in diameter, along the contact between schreibersite and troilite.
  
Color: White, similar to kamacite; bluish compared to schreibersite, in reflected light.
Diaphaneity: Opaque
Hardness (Mohs): >7
Measured Density: 6.92 (calculated) g/cm3
  
Geologic Setting: Along the contacts between schreibersite and troilite in a Fe–Ni meteorite (Ollague); as a single grain in a brecciated lunar meteorite of mixed mare and highland origin (Y-793274 meteorite); in the oxidation zone of a platinum-bearing Cu–Ni sulfide deposit (China).
Mineral Association: Kamacite, olivine, schreibersite, troilite (Ollague meteorite); plagioclase, glass (Y-793274 meteorite) schreibersite, wustite, lawrencite (Canyon Diablo meteorite).
  

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