Recycled volatiles determine fertility of porphyry deposits in collisional settings
Abstract: An intensive study of the geochemical characteristics (including the volatile elements Cl and S) of apatite associated with porphyry deposits was undertaken to address the debate about the crust- or mantle-derivation of their copper and gold and to better understand the controls on the transport of metals in magmatic fluids in post-subduction settings. New geochemical data on apatite reveal parameters to discriminate mineralized porphyry systems across Iran and western China (Tibet and Yunnan), from coeval barren localities across this post-subduction metallogenic belt. Apatites in fertile porphyries have higher Cl and S concentrations (reflecting water-rich crystallization conditions) than those from coeval barren ones. Our new isotopic data also indicate these volatiles are likely derived from pre-enriched sub-continental lithospheric mantle, metasomatized by previous oceanic subduction. This study demonstrates that refertilization of suprasubduction lithospheric mantle during previous collision events is a prerequisite for forming post-subduction fertile porphyries, providing an evidence-based alternative to current ore-enrichment models.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Recycled volatiles determine fertility of porphyry deposits in collisional settings ; volume:106 ; number:4 ; year:2021 ; pages:656-661 ; extent:6
American mineralogist ; 106, Heft 4 (2021), 656-661 (gesamt 6)
- Urheber
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Xu, Bo
Hou, Zeng-Qian
Griffin, William L.
Lu, Yongjun
Belousova, Elena
Xu, Ji-Feng
O’Reilly, Suzanne Y.
- DOI
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10.2138/am-2021-7714
- URN
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urn:nbn:de:101:1-2404201645471.641199663356
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:46 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Xu, Bo
- Hou, Zeng-Qian
- Griffin, William L.
- Lu, Yongjun
- Belousova, Elena
- Xu, Ji-Feng
- O’Reilly, Suzanne Y.
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