Boron in chondritic meteorites

Details Boron in chondritic meteorites Boron in chondritic meteorites

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988gecoa..52.2311s&link_type=abstract

Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 52, Sept. 1988, p. 2311-2319. NSERC-supported research.

Computer Science

4

Boron, Chondrites, Meteoritic Composition, Antarctic Regions, Carbonaceous Chondrites, Earth Crust, Ion Probes

Scientific paper

The B and Li content and distribution in 14 chondrites are investigated experimentally by means of prompt gamma neutron activation on bulk samples, EMPA, and alpha-track imaging of thin polished sections attached to neutron-irradiated cellulose nitrate films. Alpha-track and transmitted-light images are shown, and numerical results are presented in extensive tables. Chondrites of lower equilibration grades are found to contain practically no Li or B in chondrules, inclusions, sulfides, or metal, so that bulk B/Li content represents material from the matrix. Weathering products in Antarctic meteorites are shown to be significantly enriched in B and Cl, and the bulk B content in carbonaceous and ordinary chondrites is found to range from 0.2 to 1 ppm (mean 0.55 ppm).

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