Difference between revisions of "Deltalumite"
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| − | A polymorph of [[leukosapphire]]. <br> | + | A polymorph of [[leukosapphire]]. Oxospinel type structure. <br> |
| − | This compound/material/gemstone | + | This compound/material/gemstone is interesting because normally Al<sub>2</sub>O<sub>3</sub> forms [[leukosapphire]] ([[corundum structure]]). |
'''Al<sub>2</sub>O<sub>3</sub> Deltalumite''' (δ form of corundum, polymorph of [[sapphire]]) – tetragonal – Mohs ?? (likely quite hard) – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Deltalumite] | '''Al<sub>2</sub>O<sub>3</sub> Deltalumite''' (δ form of corundum, polymorph of [[sapphire]]) – tetragonal – Mohs ?? (likely quite hard) – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Deltalumite] | ||
| + | |||
| + | Its structural formula can be written as (Al<sub>0.67</sub>◻<sub>0.33</sub>)Al<sub>2</sub>O<sub>4</sub>, where ◻ is a vacancy. | ||
| + | |||
| + | == Misc == | ||
| + | |||
| + | How to spell this? Deltalumite? Delt-alumite? Delta-lumite? Delta-alumite? <br> | ||
| + | Too much candy to pick from. | ||
== Related == | == Related == | ||
| + | * [[Leukosapphire]] | ||
* [[Base materials with high potential]] | * [[Base materials with high potential]] | ||
* [[Gemstone]] | * [[Gemstone]] | ||
| − | * [[ | + | |
| + | == External links == | ||
| + | |||
| + | * [https://www.wikidata.org/wiki/Q27013457 (on wikidata)] | ||
| + | * [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?!}} | ||
| + | |||
| + | === Papers === | ||
| + | |||
| + | "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! | ||
| + | * Paper including figures showing projections of the structure <br>https://link.springer.com/article/10.1134/S1075701520070089 | ||
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
