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Chemical variation and zoning of olivine in lunar dunite 72415 - Near-surface accumulationElectron microprobe remeasurements have been used to reevaluate the range of olivine compositions, including CaO, in lunar dunite sample 72415 and compare that range with olivines in established plutonic rocks. Olivines from ferroan anorthosite 62237 and samples from the Stillwater intrusion were analyzed; literature data for other lunar and terrestrial plutonic samples were used for comparisons. The analyses show that the lunar dunite 72415 contains a range of olivine compositions, that the olivines are zoned, and that they have CaO abundances that are consistent with shallow hypabyssal rather than deep plutonic accumulation.
Document ID
19920048259
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ryder, Graham
(Lunar and Planetary Institute Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Lunar And Planetary Exploration
Meeting Information
Meeting: Lunar and Planetary Science Conference
Location: Houston, TX
Country: United States
Start Date: March 18, 1991
End Date: March 22, 1991
Sponsors: American Association of Petroleum Geologists, Lunar and Planetary Institute, NASA
Accession Number
92A30883
Funding Number(s)
CONTRACT_GRANT: NASW-4574
Distribution Limits
Public
Copyright
Other

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