Article: Platinum-group element (PGE) geochemistry of the Emeishan basalts in the Pan-Xi area, SW China

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TitlePlatinum-group element (PGE) geochemistry of the Emeishan basalts in the Pan-Xi area, SW China
AuthorsZhong, H1
Zhu, W1
Qi, L1 2
Zhou, M2
Song, X1
Zhang, Y3
KeywordsBasalts
Pan-Xi area
PGE
Sulfides
Issue Date2006
PublisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/
CitationChinese Science Bulletin, 2006, v. 51 n. 7, p. 845-854 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s11434-006-0845-6
AbstractThe Longzhoushan and Ertan basalts in the Pan-Xi area were generated by relatively low degrees of partial melting (< 7%), during which Ir, Ru, and Rh are compatible while Pt and Pd are incompatible. Most of these samples have high PGE concentrations and much higher Pd/Ir and Cu/Pd ratios than those of primitive mantle. A small amount of sulfides (∼0.007%) remained in the mantle source during partial melting, whereas part of the magmas reached sulfide saturation and segregated PGE-rich sulfides (∼0.020%-0.033%) during ascent period. Osmium, Ir, and Pt could form platinum-group metallic alloys hosted in chromites or sulfides during fractional crystallization process, leading to the decoupling of Pt and Pd contents and considerable variations of Ir contents. Sulfides segregated from the basaltic magmas may provide important material sources for the formation of the Cu-Ni-PGE deposits (mineralization) in the mafic-ultramafic intrusions near the magma conduits. © Science in China Press 2006.
ISSN1001-6538
2011 Impact Factor: 1.321
2011 SCImago Journal Rankings: 0.102
DOIhttp://dx.doi.org/10.1007/s11434-006-0845-6
ISI Accession Number IDWOS:000237493500013
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorZhong, H
dc.contributor.authorZhu, W
dc.contributor.authorQi, L
dc.contributor.authorZhou, M
dc.contributor.authorSong, X
dc.contributor.authorZhang, Y
dc.date.accessioned2010-09-06T06:45:54Z
dc.date.available2010-09-06T06:45:54Z
dc.date.issued2006
dc.description.abstractThe Longzhoushan and Ertan basalts in the Pan-Xi area were generated by relatively low degrees of partial melting (< 7%), during which Ir, Ru, and Rh are compatible while Pt and Pd are incompatible. Most of these samples have high PGE concentrations and much higher Pd/Ir and Cu/Pd ratios than those of primitive mantle. A small amount of sulfides (∼0.007%) remained in the mantle source during partial melting, whereas part of the magmas reached sulfide saturation and segregated PGE-rich sulfides (∼0.020%-0.033%) during ascent period. Osmium, Ir, and Pt could form platinum-group metallic alloys hosted in chromites or sulfides during fractional crystallization process, leading to the decoupling of Pt and Pd contents and considerable variations of Ir contents. Sulfides segregated from the basaltic magmas may provide important material sources for the formation of the Cu-Ni-PGE deposits (mineralization) in the mafic-ultramafic intrusions near the magma conduits. © Science in China Press 2006.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationChinese Science Bulletin, 2006, v. 51 n. 7, p. 845-854 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s11434-006-0845-6
dc.identifier.doihttp://dx.doi.org/10.1007/s11434-006-0845-6
dc.identifier.epage854
dc.identifier.hkuros167279
dc.identifier.isiWOS:000237493500013
dc.identifier.issn1001-6538
2011 Impact Factor: 1.321
2011 SCImago Journal Rankings: 0.102
dc.identifier.issue7
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-33748878372
dc.identifier.spage845
dc.identifier.urihttp://hdl.handle.net/10722/72873
dc.identifier.volume51
dc.languageeng
dc.publisherScience China Press. The Journal's web site is located at http://www.springerlink.com/content/1001-6538/
dc.publisher.placeChina
dc.relation.ispartofChinese Science Bulletin
dc.relation.referencesReferences in Scopus
dc.subjectBasalts
dc.subjectPan-Xi area
dc.subjectPGE
dc.subjectSulfides
dc.titlePlatinum-group element (PGE) geochemistry of the Emeishan basalts in the Pan-Xi area, SW China
dc.typeArticle
Author Affiliations
  1. Institute of Geochemistry Chinese Academy of Sciences
  2. The University of Hong Kong
  3. Chengdu Institute of Geology and Mineral Resources