Rare earth elements and the petrogenesis of aubrites

Journal Article · Sat Dec 01 00:00:00 EST 1990 · Geochimica et Cosmochimica Acta; (USA)

DOI:https://doi.org/10.1016/0016-7037(90)90304-4· OSTI ID:5921101

Floss, C; Crozaz, G ^[1]; Strait, M M ^[2]

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1. Washington Univ., St. Louis, MO (USA)
2. Alma College, MI (USA)

REE measurements in the Bishopville aubrite confirm that oldhamite (CaS) is the dominant REE carrier, while most other phases, including the major silicates, are extremely REE-depleted. In oldhamite, a variety of REE patterns are observed, which could not have been produced during crystallization from a single fractionating magma. Although the aubrites have clearly undergone igneous processing, oldhamite (which is highly refractory) may be a relict phase. In this case, whole-rock REE data cannot provide information on the igneous evolution of these meteorites.

• OSTI ID: 5921101
• Journal Information: Geochimica et Cosmochimica Acta; (USA), Vol. 54:12; ISSN 0016-7037
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
CHONDRITES
MINERALOGY
PETROGENESIS
ENSTATITE
GEOCHEMISTRY
GEOLOGIC HISTORY
MAGMA
RARE EARTHS
ALKALINE EARTH METAL COMPOUNDS
CHEMISTRY
ELEMENTS
MAGNESIUM COMPOUNDS
MAGNESIUM SILICATES
METALS
METEORITES
MINERALS
OXYGEN COMPOUNDS
PYROXENES
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
STONE METEORITES
580000* - Geosciences