Computer Science
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985geokh......142s&link_type=abstract
Geokhimiia (ISSN 0016-7525), Feb. 1985, p. 142-152. In Russian.
Computer Science
Carbonaceous Chondrites, Heating, Metamorphism (Geology), Meteoritic Composition, Olivine, Murchison Meteorite, Murray Meteorite, Orgueil Meteorite, Phase Transformations, Reaction Products
Scientific paper
The olivine reaction products of carbonaceous chondrites from the CI and CM groups were studied, following heating at various temperatures for different periods of time. X-ray powder diffraction and Moessbauer spectroscopy were used to analyze the reaction products. It is shown that low-temperature heating (450 C) products contained traces of phyllosilicate, forsterite, magnetite, and pentlandite. High-temperature (1200-1400 C) reaction products included iron-free pyroxenes, pentlandite and corundum. The chemical composition of high-temperature olivine was determined on the basis of microprobe measurements, and the results are discussed in detail. The variation of trace elements with heating temperature in olivine is given in a table.
Malysheva T. V.
Shcherbovskii Ia. E.
Smirnova E. P.
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