Axtell, a new CV3 chondrite find from Texas

Details Axtell, a new CV3 chondrite find from Texas Axtell, a new CV3 chondrite find from Texas

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995metic..30...42s&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 30, no. 1, p. 42-46

Mathematics

Logic

16

Carbonaceous Chondrites, Chemical Composition, Chondrule, Matrix Materials, Abundance, Cobalt 60, Inclusions, Refractory Metals, Texas, Thermoluminescence

Scientific paper

We describe a previously unreported meteorite found in Axtell, Texas, in 1943. Based on the mineralogical composition and texture of its matrix and the sizes and abundance of chondrules, we classify it as a CV3 carbonaceous chondrite. The dominant opaque phase in the chondrules is magnetite, and that in refractory inclusions is Ni-rich metal (awaruite). Axtell, therefore, belongs to the oxidized subgroup of CV3 chondrites, although unlike Allende it escaped strong sulfidation. The meteorite bears a strong textural resemblance to Allende, and its chondrule population and matrix appear to be quite similar to those of Allende, but its refractory inclusions, thermoluminescence properties, and cosmogenic Co-60 abundances are not. Our data are consistent with a terrestrial age for Axtell of approximately 100 years and a metamorphic grade slightly lower than that of Allende.

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