Petrology and chemistry of hyperferroan anorthosites and other clasts from lunar meteorite ALHA81005

Conference · Thu Nov 15 04:00:00 EST 1984 · JGR, J. Geophys. Res., (Sect.) C:; (United States)

OSTI ID:5822595

Goodrich, C A; Taylor, G J

The results of petrographic and chemical studies of 11 previously undescribed clasts from the lunar meteorite Allan Hills A81005 are reported. The majority of lithic clasts in this regolith breccia are granular to cataclastic polymict breccias that are mixtures of ferroan anorthosites and troctolitic Mg-suite plutonic rocks with mg greater than 84, An 97, and REE abundances consistent with those of known Mg-suite rocks. Clasts of appropriate Mg-suite end members have not been found in 81005, although magnesian olivine fragments are present. Impact-melt clasts similar in composition to bulk 81005 also occur. AH81005 is low in KREEP.

• Research Organization: New Mexico Univ., Albuquerque
• OSTI ID: 5822595
• Report Number(s): CONF-840385-
• Conference Information: Journal Name: JGR, J. Geophys. Res., (Sect.) C:; (United States) Journal Volume: 89
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics & Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALI METALS
ANORTHOSITES
CHEMISTRY
ELEMENTS
GABBROS
GEOCHEMISTRY
GEOLOGY
IGNEOUS ROCKS
LITHOLOGY
LUNAR MATERIALS
MATERIALS
METALS
METEORITES
MOON
NONMETALS
PETROLOGY
PHOSPHORUS
PLUTONIC ROCKS
POTASSIUM
ROCKS
SATELLITES