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Norman et al. 1991

Norman, M.D., Taylor, G.J. and Keil, K. (1991). Additional complexity in the lunar crust: Petrology of sodic anorthosites and sulfur-rich, ferroan noritic anorthosites. Geophysical Research Letters 18: doi: 10.1029/91GL02617. issn: 0094-8276.

Lunar breccia 67016 contains two suites of unusual highlands rocks: sulfur-rich, noritic anorthosites, and sodic anorthosites. Mineral compositions of the sulfur-rich noritic anorthosites closely match those of ferroan anorthosites. Unusually large amounts of sulfides, and sulfidation reactions involving olivine in these clasts probably reflect endogeneous volatile transfer. The sodic anorthosites are mafic-poor, with mineral compositions intermediate between those of pristine ferroan and alkali anorthosites. Rare examples of pristine rocks with similar mineral compositions are known, and may represent a distinct class of lunar crustal rocks.

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	Abstract

Keywords
Mineralogy, Petrology, and Rock Chemistry, Composition of the crust, Mineralogy, Petrology, and Rock Chemistry, Igneous petrology, Planetology, Solid Surface Planets and Satellites, Composition, Planetology, Solid Surface Planets and Satellites, Origin and evolution

Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/

Publisher
American Geophysical Union
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