HR: 0800h
AN: P41C-07    [Abstracts]
TI: Carbonaceous Matter Inside Individual Chondrules of the Allende Meteorite
AU: * Flores-Gutierrez, D
EM: daniel@astroscu.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Instituto de Astronomia Delegacion Coyoacan, Mexico D.F., 04510, Mexico
AU: Urrutia-Fucugauchi, J
EM: juf@geofisica.unam.mx
AF: Universidad Nacional Autonoma de Mexico, Instituto de Geofisica Delegacion Coyoacan, Mexico, D.F., 04510, Mexico
AB: We report new results of petrographic and geochemical analyses of a suite of individual chondrules retrieved from a fragment of the CV3 Allende meteorite. Allende is a well known intensively studied meteorite from the relatively rare group of carbonaceous chondrites, which fell on February 1969 in Chihuahua, northern Mexico. For this work, we concentrate on the characterization of the minerals inside chondrules by Raman spectroscopy. Results from Raman spectroscopy, together with ion microprobe and scanning electron microscopy, etc, confirm occurrence of carbonaceous matter in the form of microdiamonds, graphite and fullerenes inside the chondrules. Observations are discussed in terms of the spatial and textural distribution in the chondrules and matrix of the Allende. Carbon and hydrogen have strong oxidizing and reducing properties and their occurrence and distribution in chondrules and matrix are critical in understanding the conditions in the early solar nebula.
DE: 1028 Composition of meteorites (3662, 6240)
DE: 3662 Meteorite mineralogy and petrology (1028, 6240)
DE: 6200 PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS
DE: 6240 Meteorites and tektites (1028, 3662)
SC: Planetary Sciences [P]
MN: 2007 Joint Assembly