Rare earth elements in some lithic and mineral clasts of polymict ureilites and petrogenetic implications

Details Rare earth elements in some lithic and mineral clasts of polymict ureilites and petrogenetic implications Rare earth elements in some lithic and mineral clasts of polymict ureilites and petrogenetic implications

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28..485g&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 485.

Computer Science

Meteoritic Composition, Mineralogy, Rare Earth Elements, Ureilites, Petrogenesis, Textures, Grain Size, Scanning Electron Microscopy, Abundance, Ion Probes

Scientific paper

Polymict ureilites, though dominated by a coarse-grained component similar in texture and composition to monomict ureilites, also contain a wide variety of small mineral and lithic clasts which have remarkably different features. These components carry important petrogenetic information that is complementary to the one that can be extracted from ordinary monomict ureilites. Based on a preliminary study by the authors (1995), the investigation of these clasts is extended to five thin sections of the polymict ureilites EET83309, North Haig, and EET87720. The major element concentrations were determined with a SEM-EDX spectrometer, and the REE abundances of some mineral and lithic clasts were measured in situ with an ion microprobe.

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