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

Conference · Thu Nov 15 00:00:00 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-
• Journal Information: JGR, J. Geophys. Res., (Sect.) C:; (United States), Vol. 89; Conference: 15. lunar and planetary science conference, Houston, TX, USA, 12 Mar 1984
• Country of Publication: United States
• Language: English

Related Subjects

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