Carlsbergite
| Carlsbergite | |
|---|---|
|
Carlsbergite was first described in the Agpalilik fragment of the Cape York meteorite. | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | CrN |
| Strunz classification | 01.BC.15 |
| Dana classification | 01.01.20.01 |
| Crystal symmetry |
Isometric hexoctahedral H-M symbol: (4/m32/m) Space group: F m3m |
| 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 |
| Crystal system | Cubic |
| Mohs scale hardness | 7 |
| Luster | Metallic |
| Diaphaneity | Opaque |
| Specific gravity | 5.9 |
| 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 it has been reported from:[3]
- the North Chile meteorite in the Antofagasta Province, Chile
- the Nentmannsdorf meteorite of Bahretal, Erzgebirge, Saxony
- 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
- the Smithonia meteorite of Oglethorpe County, Georgia
- the Kenton County meteorite of Kenton County, Kentucky
- the Lombard meteorite of Broadwater County, Montana
- the Murphy meteorite of Cherokee County and the Lick Creek meteorite of Davidson County, North Carolina
- the New Baltimore meteorite of Somerset County, Pennsylvania
References
- 1 2 3 4 "Carlsbergite". Webmineral. Retrieved 10 January 2013.
- 1 2 Carlsbergite in the Handbook of Mineralogy
- 1 2 Carlsbergite on Mindat.org
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