Difference between revisions of "Deltalumite"
From apm
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== External links == | == External links == | ||
| − | * https://www.wikidata.org/wiki/Q27013457 | + | * [https://www.wikidata.org/wiki/Q27013457 (on wikidata)] |
* Paper including figures showing projections of the structure <br>https://link.springer.com/article/10.1134/S1075701520070089 | * Paper including figures showing projections of the structure <br>https://link.springer.com/article/10.1134/S1075701520070089 | ||
| + | * [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Deltalumite (on mineralienatlas.de)] | ||
| + | * [https://www.mindat.org/min-47933.html (on mindat.org)] | ||
| + | {{wikitodo|Links seem to be broken, paper abstracts removed?!}} | ||
Revision as of 10:26, 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
- (on wikidata)
- Paper including figures showing projections of the structure
https://link.springer.com/article/10.1134/S1075701520070089 - (on mineralienatlas.de)
- (on mindat.org)
(wiki-TODO: Links seem to be broken, paper abstracts removed?!)
