Petrology of Luna 20 regolith from the lunar highlands

Details Petrology of Luna 20 regolith from the lunar highlands Petrology of Luna 20 regolith from the lunar highlands

Apr 1973

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973gecoa..37..815c&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 37, Issue 4, pp.815-816

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Scientific paper

The Luna 20 regolith sample contains crystalline lithic fragments of mare basalt, the anorthosite-norite-troctolite group, and feldspathio basalt. Discrete mineral fragments and mineral fragments in regolith breccias can generally be assigned, based on chemical criteria, to one or the other of the first two rock types. A complex history is indicated for the regolith fragments involving repeated metamorphism and melting of the highlands due to impact events. The glass fragments and the feldspathic basalts probably are the result of this melting and their composition may be representative of a large portion of the regolith at this site.

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