1988•Lunar and Planetary Science ConferenceRequires access

Highland materials at Apollo 17: contributions from 72275.

P. A. Salpas, Marilyn M. Lindstrom, L. A. Taylor

Abstract

A set of Apollo 17 feldspathic highland clasts from polymict breccia 72275 have been studied. The clasts include six granulites and a rare Apollo 17 ferroan anorthosite (FAN). The composition of these clasts is discussed in detail. It is suggested that there are three possibilities regarding the petrogenesis of Apollo 17 FAN: (1) the rocks are products of late-stage crystallization from their parent magma, (2) the rocks solidified with a high amount of trapped liquid relative to FANs from other sites, or (3) the highlands rocks that formed at this site crystallized from a parent magma with a composition distinct from that of other lunar highland sites.

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Key concepts: Breccia, Anorthosite, Geology, Geochemistry, Granulite, Clastic rock, Geology of the Moon, Apollo