File:Chromite-201529.jpg · Wikimedia Commons · See Wikimedia Commons
Key facts
- Mineral.name
- Chromite
- Mineral.category
- Oxide minerals Spinel group Spinel structural group
- Mineral.image
- File:Chromite-201529.jpg
- Mineral.imagesize
- 260px
- Mineral.caption
- Octahedral chromite crystal from the Freetown Layered Complex in Sierra Leone, Africa (size: 1.3 x 1.2 x 1.2 cm)
- Mineral.formula
- (Fe, Mg)Cr2O4
- Mineral.IMAsymbol
- Chr
- Mineral.strunz
- 4.BB.05
- Mineral.system
- Isometric
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Fdm (no. 227)
- Mineral.unit cell
- a = 8.344 Å; Z = 8
- Mineral.color
- Black to brownish black; brown to brownish black on thin edges in transmitted light
- Mineral.habit
- Octahedral rare; massive to granular
- Mineral.twinning
- Spinel law on {Ill}
- Mineral.cleavage
- None, parting may develop along {III}
- Mineral.fracture
- Uneven
- Mineral.tenacity
- Brittle
via Wikipedia infobox
Wikidata facts
- Subclass of
- oxyspinel group
- Named after
- chromium
- Image
- ChromiteUSGOV.jpg
Show 11 more facts
- described by source
- Encyclopædia Britannica 11th edition
- Nickel-Strunz 9th edition (updated 2009)
- 4.BB.05
- Commons category
- Chromite
- chemical formula
- Fe²⁺Cr₂O₄
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 4.BB.05
- crystal system
- cubic crystal system
- streak color
- brown
- Mohs' hardness
- 5.5
- IMA Mineral Symbol
- Chr
- Strunz 8th edition (series ID, updated)
- IV/B.01c
- 2022 Harmonized System Code
- 261000
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