Oxidation state of the lithospheric mantle beneath Diavik diamond mine, central Slave craton, NWT, Canada

Oxygen fugacity ( f O 2 ) conditions were determined for 29 peridotite xenoliths from the A154-North and A154-South kimberlites of the Diavik diamond mine using the newly developed flank method modified specifically for measuring Fe 3+ in mantle-derived pyropic garnets. The results indicate that the...

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Bibliographic Details
Published in:Contributions to mineralogy and petrology 2010-05, Vol.159 (5), p.645-657
Main Authors: Creighton, Steven, Stachel, Thomas, Eichenberg, Dave, Luth, Robert W.
Format: Article
Language:English
Subjects:
Diamonds
Earth and Environmental Science
Earth Sciences
Geology
Lithosphere
Mineral Resources
Mineralogy
Mines
Original Paper
Oxidation
Petrology
Trace elements
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Summary:Oxygen fugacity ( f O 2 ) conditions were determined for 29 peridotite xenoliths from the A154-North and A154-South kimberlites of the Diavik diamond mine using the newly developed flank method modified specifically for measuring Fe 3+ in mantle-derived pyropic garnets. The results indicate that the garnet-bearing lithospheric mantle beneath the central Slave craton is vertically layered with respect to oxidation state. The shallow (
ISSN:0010-7999
1432-0967
DOI:10.1007/s00410-009-0446-x