Mathematics – Logic
Scientific paper
Mar 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975gecoa..39..229g&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 39, Mar. 1975, p. 229-245.
Mathematics
Logic
9
Apollo 14 Flight, Breccia, Lunar Rocks, Petrography, Lunar Craters, Lunar Geology, Microanalysis, Mineralogy
Scientific paper
A detailed description is given of the petrology and mineralogy of lunar polymict breccia 14321, which was returned from the Fra Mauro formation on the Apollo 14 mission. Electron probe microanalysis and microscopic studies were made of seven petrographic thin sections of the rock. Three broad genetic classes were found in the thin sections: (1) rounded fragments of pre-existing microbreccia with microscopically recognizable crystal and lithic fragments incorporated in a dark matrix; (2) igneous rock fragments of basaltic composition; and (3) a light colored, somewhat friable matrix which cements the other two classes. The components are classified according to chemical, mineralogical textural, and chronological criteria.
Grieve Richard A.
McKay Gordon A.
Smith David H.
Weill Daniel F.
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