The Nakhlites. I - Petrography and mineral chemistry.

Details The Nakhlites. I - Petrography and mineral chemistry. The Nakhlites. I - Petrography and mineral chemistry.

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975metic..10..303b&link_type=abstract

Meteoritics, vol. 10, Dec. 31, 1975, p. 303-315, 317-324.

Other

52

Geochemistry, Meteoritic Composition, Meteoritic Microstructures, Petrography, Stony Meteorites, Chemical Composition, Meteoroid Showers, Mineralogy

Scientific paper

The two Nakhlite meteorites (Nakhla and Lafayette) are described, and their possible origin is discussed. It is shown that both objects are cumulates of clinopyroxene with augite as the major mineral and with lesser abundances of olivine, plagioclase, K-feldspar, Fe-Ti oxides, FeS, pyrite, chalcopyrite, and possibly iddingsite. Also, both meteorites are unbrecciated, and their texture is dominated by elongate subhedral to euhedral prisms of clinopyroxene. The data are shown to be compatible with the Nakhlites' being cumulative rocks from a common basaltic parent liquid. It is established that these objects are not of lunar origin, and it is concluded that the position of the parent body relative to other planetary bodies remains to be determined.

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