NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Spinel-silicate co-crystallization relations in sample 15555The results on the crystallization history of medium-grained mare basalt sample 15555,171, based on microprobe analyses (Dalton, 1973) of host and inclusion mineral pairs are summarized with emphasis placed on that part of the crystallization history during which chromite and ulvospinel were crystallizing. Compositional data on pyroxene olivine, chromite and ulvospinel in 15555,171 were collected using microprobe; data are based on corrected counts ratios for nine elements. It is concluded that systematic chemical relations between host and inclusion minerals suggest continuous in situ nucleation and growth of these minerals; that the data allow the possibility of some minerals, especially chromite, settling out of the melt during crystallization; and that the chromite to ulvospinel transition is correlated with a compositional change of the melt resulting from nucleation and growth of plagioclase.
Document ID
19750055496
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Dalton, J.
Hollister, L. S.
(Princeton University Princeton, N.J., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1974
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar Science Conference
Location: Houston, TX
Start Date: March 18, 1974
End Date: March 22, 1974
Accession Number
75A39568
Funding Number(s)
CONTRACT_GRANT: NGL-31-001-283
Distribution Limits
Public
Copyright
Other

Available Downloads

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