Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada
This research is funded by the Canadian Mining Research Organization (CAMIRO) and an NSERC CRD grant. Research is also funded by the NSERC-Altius Industrial Research Chair in Mineral Deposits, funded by NSERC, Altius Resources Inc. and the Development Corporation of Newfoundland and Labrador. Metall...
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ftstandrewserep:oai:research-repository.st-andrews.ac.uk:10023/10616 2023-07-02T03:33:01+02:00 Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada Lode, Stefanie Piercey, Stephen J. Layne, Graham D. Piercey, Glenn Cloutier, Jonathan University of St Andrews. Earth and Environmental Sciences 2017-04-12 24 application/pdf http://hdl.handle.net/10023/10616 https://doi.org/10.1007/s00126-016-0652-1 eng eng Mineralium Deposita Lode , S , Piercey , S J , Layne , G D , Piercey , G & Cloutier , J 2017 , ' Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada ' , Mineralium Deposita , vol. 52 , no. 1 , pp. 105-128 . https://doi.org/10.1007/s00126-016-0652-1 0026-4598 PURE: 242241118 PURE UUID: 416a225a-b286-4355-8afc-8f1d6e5b5006 Scopus: 84963642309 ORCID: /0000-0002-9432-9880/work/29685349 WOS: 000392126400006 http://hdl.handle.net/10023/10616 https://doi.org/10.1007/s00126-016-0652-1 © Springer-Verlag Berlin Heidelberg 2016. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1007/s00126-016-0652-1 VMS Exhalites Sulphur and lead isotopes TSR BSR BSO Disproportionation QE Geology Geochemistry and Petrology Geophysics NDAS QE Journal article 2017 ftstandrewserep https://doi.org/10.1007/s00126-016-0652-1 2023-06-13T18:27:46Z This research is funded by the Canadian Mining Research Organization (CAMIRO) and an NSERC CRD grant. Research is also funded by the NSERC-Altius Industrial Research Chair in Mineral Deposits, funded by NSERC, Altius Resources Inc. and the Development Corporation of Newfoundland and Labrador. Metalliferous sedimentary rocks (mudstones, exhalites) associated with the Cambrian precious metal-bearing Lemarchant Zn-Pb-Cu-Au-Ag-Ba volcanogenic massive sulphide (VMS) deposit, Tally Pond volcanic belt, precipitated both before and after VMS mineralization. Sulphur and Pb isotopic studies of sulphides within the Lemarchant exhalites provide insight into the sources of S and Pb in the exhalites as a function of paragenesis and evolution of the deposit and subsequent post-depositional modification. In situ S isotope microanalyses of polymetallic sulphides (euhedral and framboidal pyrite, anhedral chalcopyrite, pyrrhotite, galena and euhedral arsenopyrite) by secondary ion mass spectrometry (SIMS) yielded δ34S values ranging from −38.8 to +14.4 ‰, with an average of ∼ −12.8 ‰. The δ34S systematics indicate sulphur was predominantly biogenically derived via microbial/biogenic sulphate reduction of seawater sulphate, microbial sulphide oxidation and microbial disproportionation of intermediate S compounds. These biogenic processes are coupled and occur within layers of microbial mats consisting of different bacterial/archaeal species, i.e., sulphate reducers, sulphide oxidizers and those that disproportionate sulphur compounds. Inorganic processes or sources (i.e., thermochemical sulphate reduction of seawater sulphate, leached or direct igneous sulphur) also contributed to the S budget in the hydrothermal exhalites and are more pronounced in exhalites that are immediately associated with massive sulphides. Galena Pb isotopic compositions by SIMS microanalysis suggest derivation of Pb from underlying crustal basement (felsic volcanic rocks of Sandy Brook Group), whereas less radiogenic Pb derived from juvenile sources ... Article in Journal/Newspaper Newfoundland University of St Andrews: Digital Research Repository Canada Newfoundland Mineralium Deposita 52 1 105 128 |
institution |
Open Polar |
collection |
University of St Andrews: Digital Research Repository |
op_collection_id |
ftstandrewserep |
language |
English |
topic |
VMS Exhalites Sulphur and lead isotopes TSR BSR BSO Disproportionation QE Geology Geochemistry and Petrology Geophysics NDAS QE |
spellingShingle |
VMS Exhalites Sulphur and lead isotopes TSR BSR BSO Disproportionation QE Geology Geochemistry and Petrology Geophysics NDAS QE Lode, Stefanie Piercey, Stephen J. Layne, Graham D. Piercey, Glenn Cloutier, Jonathan Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
topic_facet |
VMS Exhalites Sulphur and lead isotopes TSR BSR BSO Disproportionation QE Geology Geochemistry and Petrology Geophysics NDAS QE |
description |
This research is funded by the Canadian Mining Research Organization (CAMIRO) and an NSERC CRD grant. Research is also funded by the NSERC-Altius Industrial Research Chair in Mineral Deposits, funded by NSERC, Altius Resources Inc. and the Development Corporation of Newfoundland and Labrador. Metalliferous sedimentary rocks (mudstones, exhalites) associated with the Cambrian precious metal-bearing Lemarchant Zn-Pb-Cu-Au-Ag-Ba volcanogenic massive sulphide (VMS) deposit, Tally Pond volcanic belt, precipitated both before and after VMS mineralization. Sulphur and Pb isotopic studies of sulphides within the Lemarchant exhalites provide insight into the sources of S and Pb in the exhalites as a function of paragenesis and evolution of the deposit and subsequent post-depositional modification. In situ S isotope microanalyses of polymetallic sulphides (euhedral and framboidal pyrite, anhedral chalcopyrite, pyrrhotite, galena and euhedral arsenopyrite) by secondary ion mass spectrometry (SIMS) yielded δ34S values ranging from −38.8 to +14.4 ‰, with an average of ∼ −12.8 ‰. The δ34S systematics indicate sulphur was predominantly biogenically derived via microbial/biogenic sulphate reduction of seawater sulphate, microbial sulphide oxidation and microbial disproportionation of intermediate S compounds. These biogenic processes are coupled and occur within layers of microbial mats consisting of different bacterial/archaeal species, i.e., sulphate reducers, sulphide oxidizers and those that disproportionate sulphur compounds. Inorganic processes or sources (i.e., thermochemical sulphate reduction of seawater sulphate, leached or direct igneous sulphur) also contributed to the S budget in the hydrothermal exhalites and are more pronounced in exhalites that are immediately associated with massive sulphides. Galena Pb isotopic compositions by SIMS microanalysis suggest derivation of Pb from underlying crustal basement (felsic volcanic rocks of Sandy Brook Group), whereas less radiogenic Pb derived from juvenile sources ... |
author2 |
University of St Andrews. Earth and Environmental Sciences |
format |
Article in Journal/Newspaper |
author |
Lode, Stefanie Piercey, Stephen J. Layne, Graham D. Piercey, Glenn Cloutier, Jonathan |
author_facet |
Lode, Stefanie Piercey, Stephen J. Layne, Graham D. Piercey, Glenn Cloutier, Jonathan |
author_sort |
Lode, Stefanie |
title |
Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
title_short |
Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
title_full |
Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
title_fullStr |
Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
title_full_unstemmed |
Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada |
title_sort |
multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the lemarchant volcanogenic massive sulphide deposit, central newfoundland, canada |
publishDate |
2017 |
url |
http://hdl.handle.net/10023/10616 https://doi.org/10.1007/s00126-016-0652-1 |
geographic |
Canada Newfoundland |
geographic_facet |
Canada Newfoundland |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
Mineralium Deposita Lode , S , Piercey , S J , Layne , G D , Piercey , G & Cloutier , J 2017 , ' Multiple sulphur and lead sources recorded in hydrothermal exhalites associated with the Lemarchant volcanogenic massive sulphide deposit, central Newfoundland, Canada ' , Mineralium Deposita , vol. 52 , no. 1 , pp. 105-128 . https://doi.org/10.1007/s00126-016-0652-1 0026-4598 PURE: 242241118 PURE UUID: 416a225a-b286-4355-8afc-8f1d6e5b5006 Scopus: 84963642309 ORCID: /0000-0002-9432-9880/work/29685349 WOS: 000392126400006 http://hdl.handle.net/10023/10616 https://doi.org/10.1007/s00126-016-0652-1 |
op_rights |
© Springer-Verlag Berlin Heidelberg 2016. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1007/s00126-016-0652-1 |
op_doi |
https://doi.org/10.1007/s00126-016-0652-1 |
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Mineralium Deposita |
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52 |
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1 |
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105 |
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128 |
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1770272788572012544 |