Chemistry:Carlsbergite
From HandWiki
Short description: Chromium nitride mineral found in meteorites
| Carlsbergite | |
|---|---|
 Carlsbergite was first described in the Agpalilik fragment of the Cape York meteorite. | |
| General | |
| Category | Mineral |
| Formula (repeating unit) | CrN |
| 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 |
| |re|er}} | 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 (nickel-rich native iron) or troilite (FeS: iron sulfide) in the form of tiny plates.[1] It occurs associated with kamacite, taenite, daubreelite, troilite and sphalerite, (Zn,Fe)S.[2]
In addition to the Cape York meteorite, carlsbergite has been reported from:[3]
- 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
References
- ↑ 1.0 1.1 1.2 1.3 "Carlsbergite". Webmineral. http://webmineral.com/data/Carlsbergite.shtml. Retrieved 10 January 2013.
- ↑ 2.0 2.1 Carlsbergite in the Handbook of Mineralogy
- ↑ 3.0 3.1 Carlsbergite on Mindat.org
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
 |  |
