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Chemistry of the Apollo 11 highland componentThirty-eight Apollo 11 lunar highland fragments from coarse fines 10085 have been subjected to petrologic and chemical study. Six major chemical groups are identified: (a) high-K KREEP; (b) anorthosite with a 10X chondrite positive Eu anomaly and anorthosite with 30X positive Eu anomaly; (c) ANT; (d) LKFM; (e) anorthositic gabbro with no Eu anomaly, with a positive Eu anomaly, and with a negative Eu anomaly; and (f) dominant Highland component, 2X-10X chondrite with a positive 10X-14X Eu anomaly. Newly recognized groups are presented based on the REE patterns: (a) ANT group with 5X La and a 22X positive Eu anomaly; (b) 10X flat with 14X positive Eu anomaly; and (c) 2-3X flat with a 10X positive Eu anomaly. The highland suite is very low in K and REE, and is overall quite similar to the Apollo 16 suite.
Document ID
19840035675
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Laul, J. C.
(Battelle Pacific Northwest Laboratories Richland, WA, United States)
Papike, J. J.
(Battelle Pacific Northwest Labs. Richland, WA, United States)
Simon, S. B.
(Battelle Pacific Northwest Labs. Richland, WA, United States)
Shearer, C. K.
(South Dakota School of Mines and Technology Rapid City, SD, United States)
Date Acquired
August 12, 2013
Publication Date
November 15, 1983
Publication Information
Publication: Journal of Geophysical Research, Supplement
Volume: 88
ISSN: 0148-0227
Subject Category
Lunar And Planetary Exploration
Accession Number
84A18462
Funding Number(s)
CONTRACT_GRANT: NAS9-15357
CONTRACT_GRANT: NAG9-22
Distribution Limits
Public
Copyright
Other

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