MÖSSBAUER MEASUREMENTS OF THE SOVIET LUNA-16 AND LUNA-20 SAMPLESReport as inadecuate




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Abstract : Up-to-date results of the room temperature Mössbauer measurements on Fe57 in the Soviet Luna-16 and Luna-20 regolith are presented. In the non-magnetic part of the spectra six quadrupole components were resolved, corresponding to two Fe types in mixed Fe-Ti oxides ilmenite, spinel and four in silicates olivine, two pyroxene sites and a glassy fraction. From the outermost magnetic lines positions, measured in -velocity-window- mode, the alloying of lunar iron with nickel was deduced. Altogether, the quantitative estimate of iron distribution and content of the above phases is compared for the Luna-16 and Luna-20 materials, the latter containing more olivine, but less ilmenite and metal. Along with macroscopic samples, individual particles were investigated in which some of the discussed minerals were identified metal, ilmenite and pyroxene with olivine.





Author: T. Zemčík K. Raclavskí

Source: https://hal.archives-ouvertes.fr/



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