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The Nakhlites. I - Petrography and mineral chemistry. II - Where, when, and howThe 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.
Document ID
19760037082
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Bunch, T. E.
(NASA Ames Research Center Moffett Field, Calif., United States)
Reid, A. M.
(NASA Johnson Space Center Houston, Tex., United States)
Date Acquired
August 8, 2013
Publication Date
December 31, 1975
Publication Information
Publication: Meteoritics
Volume: 10
Subject Category
Lunar And Planetary Exploration
Accession Number
76A20048
Distribution Limits
Public
Copyright
Other

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