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Lea County 001, an H5 chondrite, and Lea County 002, an ungrouped type 3 chondriteA 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.
Document ID
19900035019
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zolensky, Michael E.
(NASA Johnson Space Center Houston, TX, United States)
Score, Roberta
(Lockheed Engineering and Sciences Co. Houston, TX, United States)
Clayton, Robert N.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Mayeda, Toshiko K.
(Chicago, University IL, United States)
Schutt, John W.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
August 14, 2013
Publication Date
December 1, 1989
Publication Information
Publication: Meteoritics
Volume: 24
ISSN: 0026-1114
Subject Category
Lunar And Planetary Exploration
Accession Number
90A22074
Funding Number(s)
CONTRACT_GRANT: NSF EAR-86-16255
Distribution Limits
Public
Copyright
Other

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