Dmitryivanovite Explained

Dmitryivanovite
Category:	Oxide mineral
Formula:	CaAl2O4
Imasymbol:	Div^[1]
Strunz:	4.BC.10
System:	Monoclinic
Class:	Prismatic (2/m)
Symmetry:	P21/c
Unit Cell:	a = 7.95, b = 8.62 c = 10.25 [Å]; β = 93.1°; Z = 12
Color:	Colorless
Habit:	Phase in CAI of 470 (NWA470) CH3 chondrite as subhedral grains
References:	^[2] ^[3]

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

• Glossary of meteoritics
• Monocalcium aluminate

Notes and References

1. Warr. L.N.. 2021. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3. 291–320. 10.1180/mgm.2021.43. 2021MinM...85..291W. 235729616. free.
2. http://webmineral.com/data/Dmitryivanovite.shtml Webmineral data
3. http://www.mindat.org/min-30909.html Mindat.org
4. 10.2138/am.2009.3080 . Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis . 2009 . Mikouchi . T. . Zolensky . M. . Ivanova . M. . Tachikawa . O. . Komatsu . M. . Le . L. . Gounelle . M. . American Mineralogist . 94 . 5–6 . 746–750. 2009AmMin..94..746M . 55193804 .
5. Web site: New minerals approved by the IMA-CNMNC in September 2010 . 2011-05-09 . 2012-03-20 . https://web.archive.org/web/20120320181827/http://pubsites.uws.edu.au/ima-cnmnc/CNMNC%20NEWSLETTER%205.pdf . dead .
6. 10.1017/S1431927610056060 . Structures of Extraterrestrial Minerals Revealed by EBSD . 2010 . Zolensky . M . Mikouchi . T . Microscopy and Microanalysis . 16 . S2 . 676–677. 2010MiMic..16S.676Z . free .
7. 10.1038/180292a0 . Crystal Structure of Calcium Monoaluminate . 1957 . Dougill . Maryon W. . Nature . 180 . 4580 . 292–293. 1957Natur.180..292D . 42936397 .