Mathematics – Logic
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985metic..20..467f&link_type=abstract
Meteoritics (ISSN 0026-1114), vol. 20, Sept. 30, 1985, p. 467-478. Research supported by the Smithsonian Fluid Research Fund.
Mathematics
Logic
7
Chondrites, Interstitials, Meteoritic Composition, Mineralogy, Petrography, Phase Diagrams, Breccia, Iron, Magnesium Compounds, Microstructure, Olivine, Pyroxenes, Silicon Dioxide, Meteorites, H5 Chondrites, Morro Do Rocio, Chondrites, Stony Meteorites, Samples, Meteorite, Composition, Texture, Mineralogy, Chemistry, Equilibration, Ordinary Chondrites, Features, Description
Scientific paper
The results of an intensive study of apparently anomalous features of the Morro do Rocio (MDR) chondrite are reported. The examination was undertaken because of the detection of what appeared to be tridymite spherules. Chemical, petrological and mineralogical analyses were performed. The analyses indicated that the features thought to anomalous were in reality artifacts taken out of context. Some olivines and pyroxenes with Fe/Mg ratios which deviated from an equilibrated structure were observed, along with free SiO2 close to the olivine. K-feldspar was found to have separated from the albitic-diopsidic residual glass (or melt). The scale of the observed anomalies was finer than the scale usually used in examining chondrites, implying that chondrites will normally display some anomalies if examined on a fine enough scale.
Fredriksson Kimmo
Wlotzka Frank
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