Refractory precursor components in an Allende ferromagnesian chondrule

Details Refractory precursor components in an Allende ferromagnesian chondrule Refractory precursor components in an Allende ferromagnesian chondrule

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..991m&link_type=abstract

In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 2: G-M p 991-992 (SEE N94-16173 03-91)

Mathematics

Logic

Allende Meteorite, Chondrites, Chondrule, Inclusions, Meteoritic Composition, Minerals, Refractories, Coarseness, Condensates, Fractionation, Grain Size, Magnesium Isotopes, Melting, Olivine, Petrology, Spinel

Scientific paper

Chemical and petrological studies of chondrules revealed that they were formed through melting of pre-existing solid precursor materials, and that one of the refractory lithophile precursors was a high temperature condensate from the nebular gas and related to Ca, Al-rich inclusions (CAIs). Sheng et al. found relict spinel grains with isotopically fractionated Mg in plagioclase-olivine inclusions from CV chondrites and suggested that the major fractionation processes were common to CAIs and chondrules. We have determined the Mg isotopic compositon of five barred olivine chondrules and one coarse-grained rim from the Allende (CV3) meteorite. A reproducibility of instrumental isotope fractionation is plus or minus 2 per thousand per amu. The precision of the Mg-26/Mg-24 data after normalization for mass fractionation can be as good as 0.5 per thousand (2 sigma(mean)). The Mg analytical results are given and indicate that delta Mg-25/Mg-24 and sigma Mg-26 of the chondrules are normal within errors.

Affiliated with

Also associated with

No associations

Rating

Refractory precursor components in an Allende ferromagnesian chondrule 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 Refractory precursor components in an Allende ferromagnesian chondrule, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Refractory precursor components in an Allende ferromagnesian chondrule will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1449939