title: Phase chemistry, structure, and radiation effects in lunar samples.
abstract: Phase chemistry, structure, and radiation effects were studied in rock, breccia, and soil samples. The regolith apparently developed in the final stages of accretion and was modified by later impact processes and radiation weathering. Exposure ages indicate transfer of buried igneous rock fragments to the near surface late in lunar history. With a few exceptions igneous rock fragments, soil, and breccia share the same distinctive chemistry, probably acquired before accretion of the moon. The igneous rocks texturally resemble basaltic achondrites, and the soil and breccias contain glassy spheres analogous to chondrules.
authors.forename: G
authors.initials: G
authors.lastname: Arrhenius
authors.forename: S
authors.initials: S
authors.lastname: Asunmaa
authors.forename: J I
authors.initials: JI
authors.lastname: Drever
authors.forename: J
authors.initials: J
authors.lastname: Everson
authors.forename: R W
authors.initials: RW
authors.lastname: Fitzgerald
authors.forename: J Z
authors.initials: JZ
authors.lastname: Frazer
authors.forename: H
authors.initials: H
authors.lastname: Fujita
authors.forename: J S
authors.initials: JS
authors.lastname: Hanor
authors.forename: D
authors.initials: D
authors.lastname: Lal
authors.forename: S S
authors.initials: SS
authors.lastname: Liang
authors.forename: D
authors.initials: D
authors.lastname: Macdougall
authors.forename: A M
authors.initials: AM
authors.lastname: Reid
authors.forename: J
authors.initials: J
authors.lastname: Sinkankas
authors.forename: L
authors.initials: L
authors.lastname: Wilkening