Uranium in rock fragments from the lunar soil

Details Uranium in rock fragments from the lunar soil Uranium in rock fragments from the lunar soil

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983geokh......659k&link_type=abstract

Geokhimiia (ISSN 0016-7525), May 1983, p. 659-664. In Russian.

Computer Science

Lunar Composition, Lunar Soil, Petrology, Uranium, Lunar Rocks, Lunik Lunar Probes, Mineralogy

Scientific paper

The concentration and distribution of uranium in fragments of lunar rocks 0.4-0.9 mm in size obtained by the Luna 16, 20, and 24 probes were studied using fission-track radiography. It was found that uranium was almost absent in the rock-forming minerals and concentrates in several accessory minerals, while the concentration of uranium in fragments of microgabbro obtained by the Lunar 20 and 24 probes was (0.0 n-n.0) x 10 to the -6th g/g of sample. It is argued that the variability in the concentration of uranium is not due to the representativeness of the fragments. The majority of the rock fragments from the Luna 24 probe are found to contain concentrations of uranium that are lower than the lunar soil as a whole. The possible reasons for these results are discussed.

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