Identification and pairing reassessment of unequilibrated ordinary chondrites from four Antarctic dense collection areas

Kevin Righter, John Schutt, Nicole Lunning, Ralph Harvey, James Karner

Meteoritics & Planetary Science
First Published: 24 July 2021


“New analyses of Cr2O3 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.”