Major-, minor-, and trace-element abundance data are presented for twenty-two Apollo 17 samples, twelve Apollo 16 samples, and one Apollo 15 basalt. The data were obtained by INAA employing a 14 MeV neutron generator, a Cf-252 isotopic neutron source and nuclear reactor thermal neutrons. Abundance summations for the twenty-four samples analyzed for major and minor abundance elements averaged 98.8 plus or minus 0.3%. Similarities between the Apollo 17 and the Apollo 11 mare basalts are discussed. Abundances in 13 Apollo 17 soils exhibit the greatest compositional range we have observed for soils from a specific landing site. A strong inverse Fe-Al correlation in all lunar materials we have analyzed with the exception of most Apollo 16 samples is defined by the equation: %Fe = -1.36 %Al + 21.5. A strong direct Mn-Fe correlation is defined by the equation: %Fe = 75.9 %Mn + 0.08. Both regression lines appear to have the mare basalts, as one end-member and an unspecified Al-rich component at the other end. Comparisons of the data from direct O determinations and calculated O abundances based on normal stoichiometry are presented.


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    Title :

    Compositional studies of the lunar regolith at the Apollo 17 site


    Contributors:
    Miller, M. D. (author) / Pacer, R. A. (author) / Ma, M.-S. (author) / Hawke, B. R. (author) / Lookhart, G. L. (author) / Ehmann, W. D. (author)

    Conference:

    Lunar Science Conference ; 1974 ; Houston, TX


    Publication date :

    1974-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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