Mathematics – Logic
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989metic..24..227z&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 227-232.
Mathematics
Logic
3
Chondrites, Meteoritic Composition, Chemical Composition, Electron Microscopy, Mineralogy, Oxygen Isotopes, Petrology, Photomicrographs
Scientific paper
A search of active deflation basins near Jal, Lea County, New Mexico resulted in the discovery of two meteorites, Lea County 001 and 002. Lea County 001 has mean olivine and low-Ca pyroxene compositions of Fa(19) and Fs(17), respectively. These and all other mineralogical and petrological data collected indicate a classification of H5 for this stone. Lea County 002 has mean olivine and low-Ca pyroxene compositions of Fa(2) and Fs(4), and is unequilibrated. Although it is mineralogically most similar to Kakangari and chondritic clasts within Cumberland Falls, the high modal amount of forsterite makes Lea County a unique type 3 chondrite. Oxygen isotope data for Lea County 002 fall on an 0-16-mixing line through those of the enstatite meteorites and IAB irons, a feature shared by Kakangari.
Clayton Robert N.
Mayeda Toshiko K.
Schutt John W.
Score Roberta
Zolensky Michael E.
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