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Heterogeneous nickel isotopic compositions in the terrestrial mantle - part 1: ultramafic lithologies

Abstract:

High precision nickel stable isotopic compositions (δ60/58Ni) are reported for 22 peridotite xenoliths from the USA (Kilbourne Hole, New Mexico), Tanzania, and Cameroon. For a subset of these, δ60/58Ni is also reported for their constituent mineral separates (olivine, orthopyroxene, clinopyroxene, and spinel). Bulk peridotites show significant heterogeneity in Ni isotopic composition, ranging from +0.02‰ to +0.26‰. Unmetasomatised fertile peridotites from three localities, define an average δ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.gca.2020.06.029

Authors


Saunders, NJ More by this author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Earth Sciences
Subgroup:
Earth Sciences
ORCID:
0000-0001-8535-5262
Halliday, AN More by this author
Publisher:
Elsevier Publisher's website
Journal:
Geochimica et Cosmochimica Acta Journal website
Volume:
285
Issue:
September 2020
Pages:
129-149
Publication date:
2020-07-03
Acceptance date:
2020-06-18
DOI:
EISSN:
1872-9533
ISSN:
0016-7037
Pubs id:
1119325
Local pid:
pubs:1119325

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