Size-frequency distributions of EH3 chondrules

Details Size-frequency distributions of EH3 chondrules Size-frequency distributions of EH3 chondrules

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987metic..22..237r&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 22, Sept. 30, 1987, p. 237-251.

Computer Science

25

Chondrites, Chondrule, Frequency Distribution, Meteoritic Composition, Particle Size Distribution, Grain Size, Petrography

Scientific paper

Size-frequency distributions of chondrules in three EH3 chondrites, namely Qingzhen, Kota-Kota and ALHA77156, are presently determined. Radial pyroxene chondrules are larger than cryptocrystalline chondrules, while nonporphyritic chondrules have a broader size-frequency distribution than the porphyritic, and porphyritic olivine-pyroxene chondrules are larger than porphyritic pyroxene chondrules. This last result is due to a reaction of fine-grained olivine with free silica to form pyroxene during mild thermal metamorphism of the whole-rocks.

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