Mathematics – Logic
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92..314j&link_type=abstract
(Lunar and Planetary Institute, NASA, AAS, et al., Lunar and Planetary Science Conference, 17th, Houston, TX, Mar. 17-21, 1986)
Mathematics
Logic
9
Breccia, Gabbro, Geochemistry, Lunar Rocks, Mineralogy, Petrology, Electron Microscopy, Kreep, Magma, Metal Oxides, Textures
Scientific paper
Detailed results of petrologic and compositional studies of three clasts found in thin sections of the Apollo 16 lunar breccia 67975 and of four clasts extracted from the breccia (for instrumental neutron activation analysis) prior to thin sectioning are reported. The alkali gabbronorites of the breccia form two distinct subgroups, magnesian and ferroan. The magnesian gabbronorites are composed of bytownitic plagioclase, hypersthene, augite, a silica mineral, and trace Ba-rich K-feldspar. The ferroan gabbronorites are composed of ternary plagioclase, pigeonite, augite, Ba-rich K-feldspar, and a silica mineral. Trace minerals in both subgroups are apatite, REE-rich whitlockite, and zircon. The magnesian and ferroan alkali gabbronorites appear to have formed by progressive differentiation of the same, or closely related, parent REE-rich magmas.
Flohr Marta K.
James Odette B.
Lindstrom Marilyn M.
No associations
LandOfFree
Petrology and geochemistry of alkali gabbronorites from lunar breccia 67975 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Petrology and geochemistry of alkali gabbronorites from lunar breccia 67975, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Petrology and geochemistry of alkali gabbronorites from lunar breccia 67975 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1456637