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Article: Controls on the metal compositions of magmatic sulfide deposits in the Emeishan large igneous province, SW China

TitleControls on the metal compositions of magmatic sulfide deposits in the Emeishan large igneous province, SW China
Authors
KeywordsEmeishan large igneous province
Magmatic sulfide deposit
Multiple removal of sulfide liquid
R-factors
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/chemgeo
Citation
Chemical Geology, 2008, v. 253 n. 1-2, p. 38-49 How to Cite?
AbstractMagmatic sulfide deposits in the Emeishan large igneous province, SW China, have variable chalcophile and siderophile metal contents and can be divided into PGE, Ni-Cu-PGE and Ni-Cu deposits. PGE sulfide deposits include the Jinbaoshan and Zhubu deposits and have ores with very low sulfide contents (~ 1 to 2 vol.%) and very high Pt and Pd (0.3 to 10 ppm) and Ir (0.02 to 0.5 ppm). Typical Ni-Cu-PGE sulfide deposits include the Yangliuping and Qingkuangshan deposits, which contain sulfide ores with more than 10 vol.% sulfides (0.1-6.2 wt.% Ni, 0.03-11 wt.% Cu) and have moderate PGE contents (0.1-5 ppm Pt, 0.01-1.8 ppm Pd, < 0.5 ppm Ir). The Ni-Cu sulfide deposits, such as the Limahe and Baimazhai deposits, have sulfide-rich ores with more than 10 vol.% sulfides (0.1-4 wt.% Ni, 0.02-6.5 wt.% Cu) and are extremely poor in PGE (< 0.2 ppm Pt and < 0.3 ppm Pd, < 0.007 ppm Ir). Silicate rocks from the hosting intrusions of these three types of deposits have distinctive PGE concentrations. On the 100% sulfide basis, Pt and Pd correlate positively with Ir in the ores from the PGE deposits, whereas they correlate negatively in the Ni-Cu-PGE and Ni-Cu deposits. PGE geochemistry and model calculations indicate that the PGE-rich sulfides were separated from primary basaltic magmas, whereas the Ni-Cu-PGE sulfides were produced from magmas that had experienced minor sulfide removal (about 0.01%), and the Ni-Cu sulfides were separated from magmas that experienced about 0.025% sulfide segregation. Fractionation of monosulfide solid solution resulted in differentiation between IPGE and PPGE in the Ni-Cu-PGE and Ni-Cu deposits. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72512
ISSN
2015 Impact Factor: 3.482
2015 SCImago Journal Rankings: 2.346
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSong, XYen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorTao, Yen_HK
dc.contributor.authorXiao, JFen_HK
dc.date.accessioned2010-09-06T06:42:32Z-
dc.date.available2010-09-06T06:42:32Z-
dc.date.issued2008en_HK
dc.identifier.citationChemical Geology, 2008, v. 253 n. 1-2, p. 38-49en_HK
dc.identifier.issn0009-2541en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72512-
dc.description.abstractMagmatic sulfide deposits in the Emeishan large igneous province, SW China, have variable chalcophile and siderophile metal contents and can be divided into PGE, Ni-Cu-PGE and Ni-Cu deposits. PGE sulfide deposits include the Jinbaoshan and Zhubu deposits and have ores with very low sulfide contents (~ 1 to 2 vol.%) and very high Pt and Pd (0.3 to 10 ppm) and Ir (0.02 to 0.5 ppm). Typical Ni-Cu-PGE sulfide deposits include the Yangliuping and Qingkuangshan deposits, which contain sulfide ores with more than 10 vol.% sulfides (0.1-6.2 wt.% Ni, 0.03-11 wt.% Cu) and have moderate PGE contents (0.1-5 ppm Pt, 0.01-1.8 ppm Pd, < 0.5 ppm Ir). The Ni-Cu sulfide deposits, such as the Limahe and Baimazhai deposits, have sulfide-rich ores with more than 10 vol.% sulfides (0.1-4 wt.% Ni, 0.02-6.5 wt.% Cu) and are extremely poor in PGE (< 0.2 ppm Pt and < 0.3 ppm Pd, < 0.007 ppm Ir). Silicate rocks from the hosting intrusions of these three types of deposits have distinctive PGE concentrations. On the 100% sulfide basis, Pt and Pd correlate positively with Ir in the ores from the PGE deposits, whereas they correlate negatively in the Ni-Cu-PGE and Ni-Cu deposits. PGE geochemistry and model calculations indicate that the PGE-rich sulfides were separated from primary basaltic magmas, whereas the Ni-Cu-PGE sulfides were produced from magmas that had experienced minor sulfide removal (about 0.01%), and the Ni-Cu sulfides were separated from magmas that experienced about 0.025% sulfide segregation. Fractionation of monosulfide solid solution resulted in differentiation between IPGE and PPGE in the Ni-Cu-PGE and Ni-Cu deposits. © 2008 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/chemgeoen_HK
dc.relation.ispartofChemical Geologyen_HK
dc.rightsChemical Geology. Copyright © Elsevier BV.en_HK
dc.subjectEmeishan large igneous provinceen_HK
dc.subjectMagmatic sulfide depositen_HK
dc.subjectMultiple removal of sulfide liquiden_HK
dc.subjectR-factorsen_HK
dc.titleControls on the metal compositions of magmatic sulfide deposits in the Emeishan large igneous province, SW Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0009-2541&volume=253&spage=38&epage=49&date=2008&atitle=Controls+on+the+metal+compositions+of+magmatic+sulfide+deposits+in+the+Emeishan+large+igneous+province,+SW+Chinaen_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.chemgeo.2008.04.005en_HK
dc.identifier.scopuseid_2-s2.0-45449107367en_HK
dc.identifier.hkuros153183en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-45449107367&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume253en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage38en_HK
dc.identifier.epage49en_HK
dc.identifier.isiWOS:000258218100004-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridSong, XY=7402269092en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridTao, Y=46462061700en_HK
dc.identifier.scopusauthoridXiao, JF=7402564566en_HK

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