Petrographic and mineralogical studies on Apollo-17 mare basalt

Details Petrographic and mineralogical studies on Apollo-17 mare basalt Petrographic and mineralogical studies on Apollo-17 mare basalt

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980geoch......230l&link_type=abstract

Geochimica, Sept. 1980, p. 230-242. In Chinese, with abstract in English.

Mathematics

Logic

Apollo 17 Flight, Basalt, Lunar Maria, Lunar Rocks, Mineralogy, Petrography, Chemical Composition, Electron Probes, Lunar Landing Sites, X Ray Analysis

Scientific paper

Petrographic and mineralogical studies on 70017-291 mare basalt indicate that the mare basalt consists principally of augite, pigeonite, plagioclase and ilmenite with minor olivine, cristobalite, metallic iron, troilite, rutile, Cr-Al-Mg ulvospinel and residual glass. X-ray microprobe analyses of whole rock and major minerals confirm that the 70017-291 sample is a medium-grained, high-Ti mare basalt, similar to those collected by the Apollo-11 mission. Chemically, this mare basalt is characterized by its higher contents of TiO2 and FeO. Electronprobe analysis gives (weight percent) pyroxene, 51.64; plagioclase, 25.69; ilmenite 21.43; olivine less than 1 and mesostasis. The sample exhibits a texture of plagioclase-ilmenite poikilitic basalt. According to Sm content, 70017-291 belongs to Type B of A-17 basalt.

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