Computer Science
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ga17.confq..61w&link_type=abstract
In Lunar Science Inst., Workshop on Geology of the Apollo 17 Landing Site p 61 (SEE N93-18786 06-91)
Computer Science
Anorthosite, Chemical Composition, Lithology, Lunar Crust, Lunar Geology, Lunar Rocks, Neutron Activation Analysis, Petrology, Breccia, Olivine, Pyroxenes
Scientific paper
Alkalic suite pristine nonmare rocks are distinctly enriched in plagiophile elements such as Na and K, as well as generally incompatible elements, despite modes and textures more characteristic of typical crustal cumulates (most commonly anorthosites) than of the basaltic KREEP rocks that appear to account for the bulk of the lunar crust's total complement of incompatible elements. Our studies indicate that the 77115 troctolitic clasts of Winzer et al. is actually a troctolitic anorthosite (or anorthositic troctolite), probably best classified as a member of the alkalic suite. We managed to obtain a thin section with pyroxene and olivine, and analyzed a 13.4-mg chip by instrumental neutron activation analysis (INAA). The results of this analysis are briefly discussed.
Kallemeyn Gregory W.
Warren Paul H.
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