NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
The consanguinity of the oldest Apollo 11 mare basaltsThe textural, mineralogical, and chemical relationships between three of the oldest dates lunar mare basalt samples returned by Apollo 11 (10003, 10029 and 10062) were investigated. Very strong resemblances were noted between the modal minerologies of 10003 and 10029. Significantly more modal olivine and cristobalite was observed in 10062 than in the other basalt samples. A detailed examination of mineral-chemical relationships among the samples revealed similarities between 10003 and 10062 and differences between these two rocks and 10029, the most significant of which is the presence of akaganeite in 10029, implying that lawrencite was present in the pristine sample of 10029 but not in 10003 and 10062. Results of a Wright-Doherty mixing program used to test various fractional crystallization schemes show that 10062 can be derived from a liquid with the composition of either 10003 or 10029 by removing 2-5% ilmenite and 5% olivine. By removing about 6% plagioclase, 10003 can be derived from a liquid with the bulk composition of 10062. It is concluded that 10003 and 10029 may have come from different basaltic flows, whereas it is possible that 10003 and 10062 were derived from the same parental magma by near-surface fractionation of olivine plus ilmenite or of plagioclase plus or minus olivine.
Document ID
19790055114
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gamble, R. P.
(Tennessee Univ. Knoxville, TN, United States)
Coish, R. A.
(Tennessee Univ. Knoxville, TN, United States)
Taylor, L. A.
(Tennessee, University Knoxville, Tenn., United States)
Date Acquired
August 9, 2013
Publication Date
January 1, 1978
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Start Date: March 13, 1978
End Date: March 17, 1978
Accession Number
79A39127
Funding Number(s)
CONTRACT_GRANT: NGL-43-001-140
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available