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The lunar regolith - Comparative studies of the Apollo and Luna sites. Chemistry of soils from Apollo 17, Luna 16, 20, and 24The present investigation represents an extension of a comparative regolith study reported by Labotka et al. (1980) to the Apollo 17 site and to the east limb of the moon (Luna 16, 20, and 24 sites). Chemical systematics are considered, taking into account major and minor element characteristics, and large ion-lithophile patterns (K, REE, and Th). Attention is also given to chemical mixing calculations and the significance of the fine fraction. It is found that the chemistries of 1000-90, 90-20, and 20-10 micrometer size fractions are very similar to each other but quite different from the 'less than 10 micrometer' fine fractions. The 'less than 10 micrometer' fine fractions, which comprise about 5 to 20% of the bulk soils, are consistently more feldspathic and enriched in LIL-rich material relative to the coarse fractions in all soils. The KREEP type is different at each site and is largely derived locally.
Document ID
19820048163
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
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.
(New York, State University Stony Brook, NY, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1982
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Start Date: March 16, 1981
End Date: March 20, 1981
Accession Number
82A31698
Funding Number(s)
CONTRACT_GRANT: NSG-9044
CONTRACT_GRANT: NAS9-15357
Distribution Limits
Public
Copyright
Other

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