publication . Other literature type . Article . 2018

A mutli-technique search for the most primitive co chondrites

Alexander, C.M.O'D.; Greenwood, R.C.; Bowden, R.; Gibson, J.M.; Howard, K.T.; Franchi, I.A.;
  • Published: 15 Jan 2018
  • Publisher: Elsevier BV
Abstract
As part of a study to identify the most primitive COs and to look for weakly altered CMs amongst the COs, we have conducted a multi-technique study of 16 Antarctic meteorites that had been classified as primitive COs. For this study, we have determined: (1) the bulk H, C and N abundances and isotopes, (2) bulk O isotopic compositions, (3) bulk modal mineralogies, and (4) for some selected samples the abundances and compositions of their insoluble organic matter (IOM). Two of the 16 meteorites do appear to be CMs – BUC 10943 seems to be a fairly typical CM, while MIL 090073 has probably been heated. Of the COs, DOM 08006 appears to be the most primitive CO identi...
Subjects
free text keywords: Geochemistry and Petrology, Weathering, Chondrite, Isotopes of oxygen, Isotope, Geochemistry, Pairing, Meteorite, Geology, Isotopes of carbon, Organic matter, chemistry.chemical_classification, chemistry, Mineralogy
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