Mathematics – Logic
Scientific paper
Mar 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986metic..21..125k&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 21, March 31, 1986, p. 125-129. Research supported by the Comite Conjunto Hispano Norteameric
Mathematics
Logic
4
Chondrites, Meteoritic Composition, Microstructure, Petrology, Classifications, Electron Probes, Microscopy, Olivine, Pyroxenes, Recrystallization, Spain, Meteorites, L6 Chondrites, Petrology, Classification, Stony Meteorites, Garraf, Microscope Methods, Microprobe Methods, Crystallization, Olivine, Description, Pyroxene, Mineralogy, Composition, Rare Gases, Fracturing, Silicates, Shock Effects, Samples, Meteorite, Texture, Photomicrographs
Scientific paper
Microscopic and electron microprobe studies indicate that the Garraf meteorite is a highly-recrystallized chondrite of petrologic type 6. Olivine (Fa24.7; PMD 1.1) and low-Ca pyroxene (Fs20.9; PMD 1.1) compositions indicate that it belongs to the L-group. Based on contents of noble gases, pervasive fracturing of silicates, common undulose extinction of olivine and plagioclase, and the lack of melt pockets and maskelynite, Garraf is placed into shock facies b. It is concluded that Garraf is a highly recrystallized L6b chondrite that, after recrystallization, was cataclased and comminuted by shock.
Conrad G. H.
Keil Klaus
King Edward A.
San Miguel A.
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