Carlsbergite
Carlsbergite was first described in the Agpalilik fragment of the Cape York meteorite.
General
CategoryMineral
Formula
(repeating unit)		CrN
IMA symbolCbg[1]
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[2][3][4]

Carlsbergite is a nitride mineral that has the chemical formula CrN,[2] 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.[2]

It occurs in meteorites along the grain boundaries of kamacite (nickel-rich native iron) or troilite (FeS: iron sulfide) in the form of tiny plates.[2] It occurs associated with kamacite, taenite, daubreelite, troilite and sphalerite, (Zn,Fe)S.[3]

In addition to the Cape York meteorite, carlsbergite has been reported from:[4]

References

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. ^ a b c d "Carlsbergite". Webmineral. Retrieved 10 January 2013.
  3. ^ a b Carlsbergite in the Handbook of Mineralogy
  4. ^ a b Carlsbergite on Mindat.org
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