PETROGRAPHY, MINERAL CHEMISTRY AND CLASSIFICATION OF SOME GROVE MOUNTAINS METEORITES

doi:10.3724/SP.J.1084.2013.00369

Abstract

Abstract: The study of 99 meteorites which collected from the Grove Mountains, Antarctica, indicates these meteorites belong to ordinary chondrites H group, L group, LL group, Ureilite and carbonaceous chondrite, respectively. Among these meteorites, 97 are ordinary chondrites, including 1 H3, 23 H4, 9 H5, 8 H6, 2 L4, 21 L5, 31 L6, 1 LL4 and 1 LL6. Other two meteorites are olivine-pigeonite ureilite (GRV 022888) and CV3 carbonaceous chondrite (GRV 023159). Some of these meteorites experienced high degree shock, and 16 members were heavily shocked samples (15 S4 and 1 S5). These heavily shocked meteorites are favorable samples for the study of early shock history of asteroids. Weathering degree of these meteorites is slight, and shock effects are showed in all the types but the S6. These meteorites experienced only weak weathering. Key words Grove Mountains, Antarctic meteorite, ordinary chondrite, CV3, Ureilite.

Key words: Grove Mountains, Antarctic meteorite, ordinary chondrite, CV3, Ureilite

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