Chemistry:Dmitryivanovite
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| Dmitryivanovite | |
|---|---|
| General | |
| Category | Oxide mineral |
| Formula (repeating unit) | CaAl2O4 |
| Strunz classification | 4.BC.10 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) |
| Space group | P21/c |
| Unit cell | a = 7.95, b = 8.62 c = 10.25 [Å]; β = 93.1°; Z = 12 |
| Identification | |
| Color | Colorless |
| Crystal habit | Phase in CAI of 470 (NWA470) CH3 chondrite as subhedral grains |
| References | [1][2] |
Dmitryivanovite is a natural mineral composed of calcium, aluminium and oxygen, with the molecular formula CaAl2O4. It was reported in 2009[4] in a calcium-aluminium-rich inclusion in the carbonaceous chondrite meteorite 470 (NWA470) CH3, which landed in North Africa. The mineral name was chosen to[5] honor Dmitriy A. Ivanov (1962–1986), a geologist, mineralogist, and petrologist who died on a field expedition.[4][6][7]
It is the high-pressure CaAl2O4 dimorph of krotite.
See also
References
- ↑ Webmineral data
- ↑ Mindat.org
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
- ↑ 4.0 4.1 Mikouchi, T.; Zolensky, M.; Ivanova, M.; Tachikawa, O.; Komatsu, M.; Le, L.; Gounelle, M. (2009). "Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis". American Mineralogist 94 (5–6): 746–750. doi:10.2138/am.2009.3080. Bibcode: 2009AmMin..94..746M.
- ↑ "New minerals approved by the IMA-CNMNC in September 2010". http://pubsites.uws.edu.au/ima-cnmnc/CNMNC%20NEWSLETTER%205.pdf.
- ↑ Zolensky, M; Mikouchi, T (2010). "Structures of Extraterrestrial Minerals Revealed by EBSD". Microscopy and Microanalysis 16 (S2): 676–677. doi:10.1017/S1431927610056060. Bibcode: 2010MiMic..16S.676Z.
- ↑ Dougill, Maryon W. (1957). "Crystal Structure of Calcium Monoaluminate". Nature 180 (4580): 292–293. doi:10.1038/180292a0. Bibcode: 1957Natur.180..292D.
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