Preliminary results of determinations of the physical properties of microfragments of lunar rocks in soil samples from Luna-24

Details Preliminary results of determinations of the physical properties of microfragments of lunar rocks in soil samples from Luna-24 Preliminary results of determinations of the physical properties of microfragments of lunar rocks in soil samples from Luna-24

May 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980dossr.252..358t&link_type=abstract

(Akademiia Nauk SSSR, Doklady, vol. 252, no. 2, 1980, p. 358-360.) Soviet Physics - Doklady, vol. 25, May 1980, p. 406-408. Tra

Physics

Basalt, Breccia, Lunar Mantle, Lunar Rocks, Regolith, Gabbro, Lunar Soil, Lunik Lunar Probes, Microparticles, Physical Properties

Scientific paper

Results of a preliminary investigation of the densities and physical and mechanical properties of individual lunar regolith particles of sizes 0.37-0.9 mm brought back in Luna 24 samples are presented. Densities, determined by the constant-temperature immersion method, are found to range between 3.17-3.26 g/cu cm for the basalt particles, 2.93-3.26 g/cu cm for the gabbros and 2.97-3.06 g/cu cm for the breccias. Particle moduli of longitudinal elasticity, determined on the basis of solid collisions, are observed to vary from 4.0 x 10 to the 10th to 9.2 x 10 to the 10th Pa. Calculations based on correlation dependences indicate heat capacities from 0.74 to 1.04 kJ/kg K and strength limitations from 1200 to 1800 x 10 to the 5th Pa. The results obtained for the microsamples are noted to be comparable to those obtained for lunar rocks and clearly different from those of their terrestrial analogs.

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