corundum
oxide mineral
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Summary
corundum is a mineral species[1]. corundum ranks in the top 0.56% of mineral species entities by monthly Wikipedia readership (9,162 views/month, #8 of 1,431).[2]
Key Facts
- Named after: ruby[3]
- Chemical formula: Al₂O₃[4]
- Subclass of: hematite mineral group[5]
- Commons category: Corundum[6]
- Has part(s): aluminium oxide[7]
- Streak color: white[8]
- Crystal system: trigonal crystal system[9]
- IMA status and/or rank: grandfathered mineral (G)[10]
- Space group: space group R-3c[11]
- Strunz 8th edition (series ID, updated): IV/C.04a[12]
- Nickel-Strunz 9th edition (updated 2009): 4.CB.05[13]
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 4.CB.05[14]
- Topic's main category: Category:Corundum gemstones[15]
- Mohs' hardness: 9[16]
- Described by source: Brockhaus and Efron Encyclopedic Dictionary[17], Small Brockhaus and Efron Encyclopedic Dictionary[18], Explanatory Dictionary of the Living Great Russian Language[19], An Addition to the Catalogue of the Foreign Native Fossils in the Collection of J. Woodward M.D.[20], Armenian Soviet Encyclopedia, vol. 5[21]
- IMA Mineral Symbol: Crn[22]
Why It Matters
corundum has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[23] corundum is known by 56 alternative names across languages and contexts.[24]