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Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas
Author(s) -
Righter Kevin,
Schutt John,
Lunning Nicole,
Harvey Ralph,
Karner James
Publication year - 2021
Publication title -
meteoritics and planetary science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.09
H-Index - 100
eISSN - 1945-5100
pISSN - 1086-9379
DOI - 10.1111/maps.13707
Subject(s) - chondrule , chondrite , geology , pairing , olivine , identification (biology) , geochemistry , mineralogy , astrobiology , meteorite , physics , biology , botany , superconductivity , quantum mechanics
New analyses of Cr 2 O 3 contents of olivines from type II chondrules in unequilibrated chondrites (UOC) from four dense collections are reported here. This survey of petrologic type 3 UOCs was undertaken to identify primitive chondrites that may have been overlooked, and to address possible pairing errors. We have identified 23 primitive UOCs (≤3.10) (only five identified previously, for a total of 28 overall), and also recommend other revisions to prior classifications and pairings.