Carlsbergite

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Carlsbergite
Agpalilik.jpg
Carlsbergite was first described in the Agpalilik fragment of the Cape York meteorite.
General
CategoryMineral
Formula
(repeating unit)
CrN
Strunz classification1.BC.15
Dana classification01.01.20.01
Crystal systemCubic
Crystal classHexoctahedral (m3m)
H-M symbol: (4/m 3 2/m)
Space groupFm3m
Unit cella = 4.16 Å; Z = 4
Identification
ColorLight gray in reflected light with rose tint
Crystal habitOriented microscopic platelets, irregular to feathery grains
Mohs scale hardness7
LusterMetallic
DiaphaneityOpaque
Specific gravity5.9
References[1][2][3]

Carlsbergite is a nitride mineral that has the chemical formula CrN,[1] or chromium nitride.

It is named after the Carlsberg Foundation which backed the recovery of the Agpalilik fragment of the Cape York meteorite in which the mineral was first described.[1]

It occurs in meteorites along the grain boundaries of kamacite or troilite in the form of tiny plates.[1] It occurs associated with kamacite, taenite, daubreelite, troilite and sphalerite.[2]

In addition to the Cape York meteorite, carlsbergite has been reported from:[3]

References[edit]

  1. ^ a b c d "Carlsbergite". Webmineral. Retrieved 10 January 2013.
  2. ^ a b Carlsbergite in the Handbook of Mineralogy
  3. ^ a b Carlsbergite on Mindat.org