Dmitryivanovite

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]

Dmitryivanovite
General
Category	Oxide mineral
Formula	CaAl2O4
IMA symbol	Div[1]
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	[2][3]

It is the high-pressure CaAl₂O₄ dimorph of krotite.

See also

• Glossary of meteoritics
• Monocalcium aluminate