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Cl, P2O5, U and Br associated with mineral separates from a low and a high Ti mare basaltLow Ti basalt 12040 and high Ti basalt 75055 have approximately the same Cl/P2O5 ratio; the Cl is that remaining after a hot water leach. Pyroxene, plagioclase and ilmenite minerals separated from the basalts also tend to have this same Cl/P2O5 ratio. This is evidence that these major minerals do not control the ratio since Cl and P would not be expected to partition to the same extent into each mineral. Olivine appears to be a special case. It is proposed that the grains measured contained inclusions with leachable and P2O5-related Cl. Dilute acid leaches of whole rock and separated minerals have the same or nearly the same Cl/P2O5 ratios as the residual samples. Apatite and whitlockite were probably the phases leached. They must be constituents of the mesostasis and are present as microminerals or coatings on major mineral grains. The acid leach results imply little or no partition of Cl and P2O5 into major minerals.
Document ID
19820038725
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Jovanovic, S.
(Argonne National Lab. IL, United States)
Reed, G. W., Jr.
(Argonne National Laboratory Argonne, IL, United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Start Date: March 17, 1980
End Date: March 21, 1980
Accession Number
82A22260
Funding Number(s)
CONTRACT_GRANT: NSF EAR-79-08357
CONTRACT_GRANT: NASA ORDER T-1795-A
Distribution Limits
Public
Copyright
Other

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