Difference between revisions of "Deltalumite"
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Oxospinel type structure. | Oxospinel type structure. | ||
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| + | == Papers == | ||
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| + | "Deltalumite, a new natural modification of alumina with spinel-type structure" | ||
| + | * Researchgate Jannuary 2019 [https://www.researchgate.net/publication/345362779_Deltalumite_a_new_natural_modification_of_alumina_with_spinel-type_structure] | ||
| + | * Researchgate December 2020 [https://www.researchgate.net/publication/349128285_Deltalumite_a_New_Natural_Modification_of_Alumina_with_a_Spinel-Type_Structure] | ||
| + | * [https://www.semanticscholar.org/paper/Deltalumite%2C-a-New-Natural-Modification-of-Alumina-Pekov-Anikin/403a9a67ff0454c5c562f9aa0ff2cdd142c31ac7/figure/3 (semanticscholar)] << Images! | ||
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| + | How to spell this? Delt-alumite? Delta-lumite? Delta-alumite? | ||
== Related == | == Related == | ||
Revision as of 10:22, 16 February 2024
A polymorph of leukosapphire.
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.
Oxospinel type structure.
Papers
"Deltalumite, a new natural modification of alumina with spinel-type structure"
- Researchgate Jannuary 2019 [2]
- Researchgate December 2020 [3]
- (semanticscholar) << Images!
How to spell this? Delt-alumite? Delta-lumite? Delta-alumite?
Related
External links
- https://www.wikidata.org/wiki/Q27013457
- Paper including figures showing projections of the structure
https://link.springer.com/article/10.1134/S1075701520070089
