Textural evidence bearing on the origin of isolated olivine crystals in C2 carbonaceous chondrites

Details Textural evidence bearing on the origin of isolated olivine crystals in C2 carbonaceous chondrites Textural evidence bearing on the origin of isolated olivine crystals in C2 carbonaceous chondrites

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978e%26psl..37..485r&link_type=abstract

Earth and Planetary Science Letters, vol. 37, no. 3, Jan. 1978, p. 485-491.

Mathematics

Logic

16

Carbonaceous Chondrites, Crystal Structure, Meteoritic Composition, Mineralogy, Olivine, Chondrule, Electron Microscopy, Glass, Photomicrographs

Scientific paper

In some cases the mechanical competence of chondrules in carbonaceous chondrites has been reduced by alteration of their mesostasis glass to friable phyllosilicate, providing a mechanism by which euhedral olivines can be separated from chondrules. Morphological features of isolate olivine grains found in carbonaceous chondrites are similar to those of olivine phenocrysts in chondrules. These observations suggest that the isolated olivine grains formed in chondrules, by crystallization from a liquid, rather than by condensation from a vapor.

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