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Major element composition of glasses in three Apollo 15 soils.Approximately 180 glasses in each of three Apollo 15 soils have been analyzed for nine elements. Cluster analysis techniques allow the recognition of preferred glass compositions that are equated with parent rock compositions. Green glass rich in Fe and Mg, poor in Al and Ti may be derived from deep-seated pyroxenitic material now present at the Apennine Front. Fra Mauro basalt (KREEP) is most abundant in the LM soil and is tentatively identified as ray material from the Aristillus-Autolycus area. Highland basalt (anorthositic gabbro), believed to be derived from the lunar highlands, has the same composition as at other landing sites, but is less abundant. The Apennine Front is probably not true highland material but may contain a substantial amount of material with the composition of Fra Mauro basalt, but lacking the high-K content.
Document ID
19720060471
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Reid, A. M.
Warner, J.
(NASA Manned Spacecraft Center Houston, Tex., United States)
Ridley, W. I.
(Lunar Science Institute Houston, Tex., United States)
Brown, R. W.
(Lockheed Electronics Co., Inc. Houston, Tex., United States)
Date Acquired
August 6, 2013
Publication Date
September 30, 1972
Subject Category
Space Sciences
Accession Number
72A44137
Funding Number(s)
CONTRACT_GRANT: NSR-09-051-001
Distribution Limits
Public
Copyright
Other

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