A compositionally unusual calcium aluminate in one of the high-melting inclusions of the Efremovka meteorite

Details A compositionally unusual calcium aluminate in one of the high-melting inclusions of the Efremovka meteorite A compositionally unusual calcium aluminate in one of the high-melting inclusions of the Efremovka meteorite

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989geokh.....1804u&link_type=abstract

Geokhimiia (ISSN 0016-7525), Dec. 1989, p. 1804-1810. In Russian.

Computer Science

Aluminates, Calcium Compounds, Inclusions, Meteoritic Composition, Refractory Materials, Chemical Composition, Chondrites, Minerals, U.S.S.R.

Scientific paper

Results are presented on the petrographic and chemical characterization of an unusual calcium aluminate found in the E66A high-melting inclusion of the Efremovka chondrite, which shows a composition intermediate between the CaAl12O19 and the CaAl4O7 phases. Possible mechanisms involved in the genesis of calcium aluminates in high-temperature inclusions of carbonaceous chondrites are discussed.

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