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Science 5 January 1973:
Vol. 179. no. 4068, pp. 74 - 76
DOI: 10.1126/science.179.4068.74
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Articles

Spinel Troctolite and Anorthosite in Apollo 16 Samples

Martin Prinz 1, Eric Dowty 1, Klaus Keil 1, and T. E. Bunch 2

1 Department of Geology and Institute of Meteoritics, University of New Mexico, Albuquerque 87106
2 Space Sciences Division, NASA Ames Research Center, Moffett Field, California 94035

A spinel troctolite and an anorthosite from the Apollo 16 landing site represent contrasting types of "primitive" lunar cumulates. The two rock types probably formed from the same parent magma type, a high-alumina magnesian basalt, with the troctolite forming earlier by crystal settling, and the anorthosite later, possibly by flotation.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cordierite-Spinel Troctolite, a New Magnesium-Rich Lithology from the Lunar Highlands.
U. B. Marvin, U. B. Marvin, J. W. Carey, and M. M. Lindstrom (1989)
Science 243, 925-928
   Abstract »    PDF »
"Very High Alumina Basalt": A Mixture and Not a Magma Type.
E. Dowty, M. Prinz, and K. Keil (1974)
Science 183, 1214-1215
   PDF »


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