Tistarite
| Tistarite | |
|---|---|
| General | |
| Category | Oxide minerals |
| Formula (repeating unit) | Ti2O3 |
| Strunz classification | 4.CB.05 |
| Crystal system | Trigonal |
| Crystal class |
Hexagonal scalenohedral (3m) H-M symbol: (3 2/m) |
| Space group | R3c |
| Identification | |
| References | [1] |
Tistarite is an exceedingly rare mineral with the formula Ti2O3, thus being the natural analogue of titanium(III) oxide.[2][1] In terms of chemistry it is the titanium-analogue of hematite, corundum, eskolaite, and karelianite. Other minerals with the general formula A2O3 are arsenolite, avicennite, claudetite, bismite, bixbyite, kangite, sphaerobismoite, yttriaite-(Y) and valentinite. Tistarite and grossmanite - both found in the famous Allende meteorite (so is kangite) - are the only currently known minerals with trivalent titanium. Titanium in minerals is almost exclusively tetravalent.[1][3][4] The only known terrestrial occurrence of tistarite was found during minerals exploration by Shefa Yamim Ltd. in the upper mantle beneath Mount Carmel, Israel.[5][6]
References
- 1 2 3 Mindat, Tistarite, http://www.mindat.org/min-38695.html
- ↑ Ma, C., and Rossmann, G.R., 2009: Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite. American Mineralogist 94(5-6), 841-844
- ↑ Mindat, Kangite, http://www.mindat.org/min-42879.html
- ↑ Mindat, Yttriaite-(Y), http://www.mindat.org/min-40471.html
- ↑ W.L. Griffin, S.E.M. Gain, D.T. Adams, J-X. Huang, M. Saunders, V. Toledo, N.J. pearson, and S.Y. O'Reilly (2016-08-17), First terrestrial occurrence of tistarite (Ti2O3): Ultra-low oxygen fugacity in the upper mantle beneath Mount Carmel, Israel (PDF), Geological Society of America, doi:10.1130/G37910.1, archived (PDF) from the original on 2016-09-12, retrieved 2016-09-12 – via Shefa Yamim Ltd.
- ↑ J-Wire Staff (2016-02-21). "Australian university confirms Israeli rare mineral discovery". J-Wire. Archived from the original on 2016-02-22. Retrieved 2016-09-12.