Difference between revisions of "Deltalumite"
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== Related == | == Related == | ||
| + | * [[Leukosapphire]] | ||
* [[Base materials with high potential]] | * [[Base materials with high potential]] | ||
* [[Gemstone]] | * [[Gemstone]] | ||
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== External links == | == External links == | ||
Latest revision as of 10:29, 16 February 2024
A polymorph of leukosapphire. Oxospinel type structure.
This compound/material/gemstone is interesting because normally Al2O3 forms leukosapphire (corundum structure).
Al2O3 Deltalumite (δ form of corundum, polymorph of sapphire) – tetragonal – Mohs ?? (likely quite hard) – [1]
Its structural formula can be written as (Al0.67◻0.33)Al2O4, where ◻ is a vacancy.
Contents
Misc
How to spell this? Deltalumite? Delt-alumite? Delta-lumite? Delta-alumite?
Too much candy to pick from.
Related
External links
(wiki-TODO: Links seem to be broken, paper abstracts removed?!)
Papers
"Deltalumite, a new natural modification of alumina with spinel-type structure"
- Researchgate Jannuary 2019 [2]
- Researchgate December 2020 [3]
- (semanticscholar) << Images!
- Paper including figures showing projections of the structure
https://link.springer.com/article/10.1134/S1075701520070089
