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The x ray microprobe determination of chromium oxidation state in olivine from lunar basalt and kimberlitic diamondsThe synchrotron x-ray microprobe is being used to obtain oxidation state information on planetary materials with high spatial resolution. Initial results on chromium in olivine from various sources including laboratory experiments, lunar basalt, and kimberlitic diamonds are reported. The lunar olivine was dominated by Cr(2+) whereas the diamond inclusions had Cr(2+/Cr(3+) ratios up to about 0.3. The simpliest interpretation is that the terrestrial olivine crystallized in a more oxidizing environment than the lunar olivine.
Document ID
19940016334
Document Type
Conference Paper
Authors
Sutton, S. R. (Chicago Univ. Chicago, IL, United States)
Bajt, S. (Chicago Univ. Chicago, IL, United States)
Rivers, M. L. (Chicago Univ. Chicago, IL, United States)
Smith, J. V. (Chicago Univ. Chicago, IL, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 3: N-Z
Subject Category
INORGANIC AND PHYSICAL CHEMISTRY
Funding Number(s)
CONTRACT_GRANT: NAG9-106
CONTRACT_GRANT: NSF EAR-89-15699
CONTRACT_GRANT: DE-AC02-76CH-00016
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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