Physics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986gecoa..50..909l&link_type=abstract
(Lunar and Planetary Institute, NASA, American Geophysical Union, et al., Lunar and Planetary Science Conference, 16th, Houston,
Physics
32
Achondrites, Chemical Analysis, Mars (Planet), Meteoritic Composition, Planetary Composition, Earth (Planet), Evolution (Development), Mineralogy, Rare Earth Elements, Trace Elements, Meteorites, Stony Meteorites, Achondrites, Shergotty, Samples, Meteorite, Chemistry, Systematics, Composition, Parent Bodies, Mars, Inaa, Rnaa, Neutron Activation Analysis, Antarctic Meteorites, Eet Meteorites, Magma, Eeta79001, Laboratory Studies, Major Elements, Trace Elements, Residue, Homogeneity, Siderophiles, Mineralogy,
Scientific paper
Sixty elements in two bulk samples of Shergotty meteorite and 30 elements in various mineral separates of Shergotty were identified, using mainly INAA and RNAA techniques. In addition, elements leached out from powdered samples of Shergotty and EETA 79001 meteorites by 0.1 N HCl, as well as the elements of their residues, were analyzed. The results have indicated that Shergotty meteorite is homogeneous in its major element composition, but heterogeneous with respect to large-ion lithophile elements, such as K, Ba, Sr, Zr, Hf, Ta, Th, and rare-earth elements (REEs). It is even more heterogeneous with respect to volatile elements, such as Cd, Te, Tl, and Bi, and the siderophiles Au and Ag. The REE patterns of the Shergotty and EETA 79001 residues are identical, indicating that the parent magmas of both meteorites are compositionally similar. However, their leachate (phosphate) patterns are different, suggesting two components for the Shergotty, one of which is similar to the EETA 79001 leachate.
Burghele A.
Dreibus Gerlind
Jagoutz Emil
Laul J. C.
Lipschutz Michael E.
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