Computer Science
Scientific paper
Jun 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gecoa..57.2649w&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 57, no. 11, p. 2649-2661.
Computer Science
20
Allende Meteorite, Chemical Composition, Meteoritic Composition, Oxygen Isotopes, Fayalite, Iron Oxides, Mass Spectrometers, Olivine, X Ray Analysis, Meteorites, Stony Meteorites, Chondrites, Cv3 Chondrites, Oxygen 16, Isotopes, Composition, Olivine, Grains, Allende, Samples, Meteorite, Laboratory Studies, Microprobe Methods, Forsterite, Enrichment, Origin, Iron Oxide, Comparison, Formation, Core, Rim, Matrix, Condensation, Procedure, Refractory Material, Fayalite
Scientific paper
The oxygen isotopic composition of a variety of individual olivine grains (including refractory forsterite grains, cores of isolated olivine grains, FeO-rich rims, and individual matrix olivine grains) from the Allende CV3 meteorite was investigated by ion microprobe mass spectrometry, in order to obtain information on the formation mechanism of these samples. It was found that the most primitive (i.e., refractory) olivine in Allende is far less enriched in O-16 than are spinel and pyroxene in Ca,Al-rich inclusions, suggesting that Allende olivine must have formed in an environment that is less enriched in O-16 compared to the gas from which Ca,Al-inclusions are formed. FeO-rich (26-30 wt pct) rims of isolated olivine grains are significantly higher in delta-O-17 and delta-O-18 than forsteritic cores, suggesting that these rims formed by condensation from an oxidized gas with higher delta-O-17 than delta-O-18. Matrix olivine was found to be highest in FeO and to have the lowest enrichment in O-16.
El Goresy Ahmed
Palme Herbert
Steele Ian M.
Weinbruch Stephan
Zinner Ernst K.
No associations
LandOfFree
Oxygen isotopic composition of individual olivine grains from the Allende meteorite 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 Oxygen isotopic composition of individual olivine grains from the Allende meteorite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Oxygen isotopic composition of individual olivine grains from the Allende meteorite will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1743962