Other
Scientific paper
Apr 1964
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1964gecoa..28..411a&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 28, Issue 4, pp.411-423
Other
9
Scientific paper
An examination of the analytical data on chondrites indicates that the two most abundant lithophile elements, Si and Mg, are significantly fractionated in these meteorites. The SiO 2 /MgO average for all chondrites is 1.60, a value may be compared with the minimum magnitude of ~1.40 which is approximated by all carbonaceous chondrites (together with a few other chondrites) and the maximum magnitude of ~1.90 which approximated by all entstatite chondrites (plus a few other stones). The entstatite chondrites together with a few other Mg-deficient chondrites tend to form a seemingly well-defined upper boundary in a SiO 2 --Fe (total) diagram. Some of the Si-Mg-Fe relationships described in this paper may have a significant bearing on meteorite classification as they appear to be of a fundamental nature.
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