Dmitryivanovite

Dmitryivanovite
General
CategoryOxide mineral
FormulaCaAl2O4
IMA symbolDiv
Strunz classification4.BC.10
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
Space groupP21/c
Unit cella = 7.95, b = 8.62
c = 10.25 [Å]; β = 93.1°; Z = 12
Identification
ColorColorless
Crystal habitPhase in CAI of 470 (NWA470) CH3 chondrite as subhedral grains
References

Dmitryivanovite is a natural mineral composed of calcium, aluminium and oxygen, with the molecular formula CaAl2O4. It was reported in 2009 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 honor Dmitriy A. Ivanov (1962–1986), a geologist, mineralogist, and petrologist who died on a field expedition.

It is the high-pressure CaAl2O4 dimorph of krotite.