Carlsbergite was first described in the Agpalilik fragment of the Cape York meteorite.
General
Category
Mineral
Formula (repeating unit)
CrN
IMA symbol
Cbg[1]
Strunz classification
1.BC.15
Dana classification
01.01.20.01
Crystal system
Cubic
Crystal class
Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m)
Space group
Fm3m
Unit cell
a = 4.16 Å; Z = 4
Identification
Color
Light gray in reflected light with rose tint
Crystal habit
Oriented microscopic platelets, irregular to feathery grains
Mohs scale hardness
7
Luster
Metallic
Diaphaneity
Opaque
Specific gravity
5.9
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]
the North Chile meteorite in the Antofagasta Province, Chile
the Nentmannsdorf meteorite of Bahretal, Saxony, Germany
the Okinawa Trough, Senkaku Islands, Okinawa Prefecture, Japan
the Uwet meteorite of Cross River State, Nigeria
the Sikhote-Alin meteorite, Sikhote-Alin Mountains, Russia
the Hex River Mountains meteorite from the Cape Winelands District, Western Cape Province, South Africa
the Canyon Diablo meteorite of Meteor Crater, Coconino County, Arizona, United States
the Smithonia meteorite of Oglethorpe County, Georgia, United States
the Kenton County meteorite of Kenton County, Kentucky, United States
the Lombard meteorite of Broadwater County, Montana, United States
the Murphy meteorite of Cherokee County and the Lick Creek meteorite of Davidson County, North Carolina, United States
the New Baltimore meteorite of Somerset County, Pennsylvania, United States
Carlsbergite is a nitride mineral that has the chemical formula CrN, or chromium nitride. It is named after the Carlsberg Foundation which backed the recovery...
calculations of the electronic structure of the compound. Though rare, carlsbergite - the natural form of chromium nitride - occurs in some meteorites. Chromium(III)...
chromite, sulfides, phosphates, silica and copper. The rare nitride mineral carlsbergite (CrN) occurs within the matrix of the metal phase. Graphite was not observed...
Brezinaite Cr3S4 Brianite Na2CaMg(PO4)2 Calcium–aluminium-rich inclusion Carlsbergite CrN the North Chile meteorite in the Antofagasta Province, Chile the...