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Size-frequency distributions of EH3 chondrulesSize-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.
Document ID
19880037989
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rubin, Alan E. (California, University Los Angeles, United States)
Grossman, Jeffrey N. (USGS Reston, VA, United States)
Date Acquired
August 13, 2013
Publication Date
September 30, 1987
Publication Information
Publication: Meteoritics
Volume: 22
ISSN: 0026-1114
Subject Category
Lunar And Planetary Exploration
Accession Number
88A25216
Funding Number(s)
CONTRACT_GRANT: NAG9-40
Distribution Limits
Public
Copyright
Other

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