Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano
Rhenium (Re) is one of the least abundant elements in Earth, averaging 0.28 ppb in the primitive mantle. The unique occurrence of rheniite ReS2 (74.5 wt% of Re) in Kudryavy volcano precipitates raises questions about recycling of Re-rich reservoirs within the Kurile-Kamchatka volcanic Island arc set...
Published in: | Geochimica et Cosmochimica Acta |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Pergamon
2008
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.11937/4487 https://doi.org/10.1016/j.gca.2007.11.015 |
id |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/4487 |
---|---|
record_format |
openpolar |
spelling |
ftcurtin:oai:espace.curtin.edu.au:20.500.11937/4487 2023-06-11T04:13:36+02:00 Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano Tessalina, Svetlana Yudovskaya, M. Chaplygin, I. Birck, J. Capmas, F. 2008 restricted https://hdl.handle.net/20.500.11937/4487 https://doi.org/10.1016/j.gca.2007.11.015 unknown Pergamon http://hdl.handle.net/20.500.11937/4487 doi:10.1016/j.gca.2007.11.015 Journal Article 2008 ftcurtin https://doi.org/20.500.11937/448710.1016/j.gca.2007.11.015 2023-05-30T19:22:10Z Rhenium (Re) is one of the least abundant elements in Earth, averaging 0.28 ppb in the primitive mantle. The unique occurrence of rheniite ReS2 (74.5 wt% of Re) in Kudryavy volcano precipitates raises questions about recycling of Re-rich reservoirs within the Kurile-Kamchatka volcanic Island arc setting. The sources of this unique Re enrichment have been inferred from studies of Re-Os isotope systematic and trace elements in volcanic gases, sulphide precipitates and host volcanic rocks. The fumarolic gas condensates are enriched in hydrophile trace elements relative to fluid-immobile elements and exhibit high Ba/Nb (133-204), Rb/Y (16-406) and Th/Zr (0.01-0.25) ratios. They are characterised by high Re (7-210 ppb) and Os abundances (0.4-0.9 ppb), with 187Os/188Os ratios in a range 0.122-0.152. This Os isotopic compositional range is similar to that of the peridotite xenoliths from the metasomatised mantle wedge above the subducted Pacific plate, the radiogenic isotopic signature of which is probably due to radiogenic addition from a slab-derived fluid. Re- and Os-rich sulphide and oxide minerals precipitate from volcanic gases within fumarolic fields. Molybdenite (MoS2), powellite (CaMoO4) and cannizzarite (Pb4Bi6S13) contain 1.5-1.7 wt%, 10 ppm, and 65-252 ppb of Re, respectively. Both molybdenite and rheniite contain normal Os concentrations, with total Os abundances in a range from 0.6 to 3.1 ppm for molybdenite, and 2.3-24.3 ppb for the rheniite samples. Repeated analyses of osmium isotope ratios for two rheniite samples form a best-fit line with an initial 187Os/188Os ratio of 0.32 ± 0.15 and an age of 79 ± 11 yr, which is the youngest age ever measured in natural samples. The high Re contents in molybdenite and rheniite led to high radiogenic 187Os values, even in the limited period of time, with 187Os/188Os ratios up to 3.3 for molybdenite and up to 4.4 for rheniite. The Os isotopic compositions of andesite-basaltic rocks from the Kudryavy volcano (187Os/188Os up to 0.326) are more radiogenic than those ... Article in Journal/Newspaper Kamchatka Curtin University: espace Pacific Geochimica et Cosmochimica Acta 72 3 889 909 |
institution |
Open Polar |
collection |
Curtin University: espace |
op_collection_id |
ftcurtin |
language |
unknown |
description |
Rhenium (Re) is one of the least abundant elements in Earth, averaging 0.28 ppb in the primitive mantle. The unique occurrence of rheniite ReS2 (74.5 wt% of Re) in Kudryavy volcano precipitates raises questions about recycling of Re-rich reservoirs within the Kurile-Kamchatka volcanic Island arc setting. The sources of this unique Re enrichment have been inferred from studies of Re-Os isotope systematic and trace elements in volcanic gases, sulphide precipitates and host volcanic rocks. The fumarolic gas condensates are enriched in hydrophile trace elements relative to fluid-immobile elements and exhibit high Ba/Nb (133-204), Rb/Y (16-406) and Th/Zr (0.01-0.25) ratios. They are characterised by high Re (7-210 ppb) and Os abundances (0.4-0.9 ppb), with 187Os/188Os ratios in a range 0.122-0.152. This Os isotopic compositional range is similar to that of the peridotite xenoliths from the metasomatised mantle wedge above the subducted Pacific plate, the radiogenic isotopic signature of which is probably due to radiogenic addition from a slab-derived fluid. Re- and Os-rich sulphide and oxide minerals precipitate from volcanic gases within fumarolic fields. Molybdenite (MoS2), powellite (CaMoO4) and cannizzarite (Pb4Bi6S13) contain 1.5-1.7 wt%, 10 ppm, and 65-252 ppb of Re, respectively. Both molybdenite and rheniite contain normal Os concentrations, with total Os abundances in a range from 0.6 to 3.1 ppm for molybdenite, and 2.3-24.3 ppb for the rheniite samples. Repeated analyses of osmium isotope ratios for two rheniite samples form a best-fit line with an initial 187Os/188Os ratio of 0.32 ± 0.15 and an age of 79 ± 11 yr, which is the youngest age ever measured in natural samples. The high Re contents in molybdenite and rheniite led to high radiogenic 187Os values, even in the limited period of time, with 187Os/188Os ratios up to 3.3 for molybdenite and up to 4.4 for rheniite. The Os isotopic compositions of andesite-basaltic rocks from the Kudryavy volcano (187Os/188Os up to 0.326) are more radiogenic than those ... |
format |
Article in Journal/Newspaper |
author |
Tessalina, Svetlana Yudovskaya, M. Chaplygin, I. Birck, J. Capmas, F. |
spellingShingle |
Tessalina, Svetlana Yudovskaya, M. Chaplygin, I. Birck, J. Capmas, F. Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
author_facet |
Tessalina, Svetlana Yudovskaya, M. Chaplygin, I. Birck, J. Capmas, F. |
author_sort |
Tessalina, Svetlana |
title |
Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
title_short |
Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
title_full |
Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
title_fullStr |
Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
title_full_unstemmed |
Sources of unique rhenium enrichment in fumaroles and sulphides at Kudryavy volcano |
title_sort |
sources of unique rhenium enrichment in fumaroles and sulphides at kudryavy volcano |
publisher |
Pergamon |
publishDate |
2008 |
url |
https://hdl.handle.net/20.500.11937/4487 https://doi.org/10.1016/j.gca.2007.11.015 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_relation |
http://hdl.handle.net/20.500.11937/4487 doi:10.1016/j.gca.2007.11.015 |
op_doi |
https://doi.org/20.500.11937/448710.1016/j.gca.2007.11.015 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
72 |
container_issue |
3 |
container_start_page |
889 |
op_container_end_page |
909 |
_version_ |
1768390784417005568 |