Mathematics – Logic
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91..115s&link_type=abstract
(Lunar and Planetary Institute, NASA, AAS, et al., Lunar and Planetary Science Conference, 17th, Houston, TX, Mar. 17-21, 1986)
Mathematics
Logic
15
Breccia, Chondrites, Evolution (Development), Metamorphism (Geology), Meteoritic Composition, Petrology, New Mexico, Olivine, Pyroxenes
Scientific paper
The olivines and pyroxenes from twenty-nine ordinary chondrites from Roosevelt County, New Mexico are examined. The mineralogical properties of the chondrites studied are described. Correlations between mineral compositions and petrologic type and between petrologic type and bulk chemistry are analyzed. It is observed that mean CaO concentrations in olivine show significant variations among equilibrated chondrites, but these are not correlated with petrologic type; the degree of heterogeneity of FeO concentrations in olivines of types 4-6 is not correlated with the degree of metamorphism; and mean FeO concentrations of silicates show average increases of 3-5 percent from type 4 to type 6 in each group.
Jeffrey Taylor G.
Keil Klaus
Scott Edward R. D.
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