The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle
We have determined the concentrations of the platinum-group elements and gold in 111 mantle xenoliths from more than 20 kimberlite pipes in southern Africa and the Karelian craton, Fennoscandian Shield, with the aim to constrain the composition of the Archean- early Proterozoic primitive mantle. Ave...
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ftunivquebecchic:oai:constellation.uqac.ca:3477 2023-07-30T04:03:28+02:00 The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle Maier, Wolfgang D. Peltonen, Petri McDonald, Iain Barnes, Sarah-Jane Hatton, Chris Viljoen, F. 2012 application/pdf https://constellation.uqac.ca/id/eprint/3477/1/The%20concentration%20of%20platinum-group%20elements%20and%20gold%20in%20southern%20African%20and.pdf en eng https://constellation.uqac.ca/id/eprint/3477/ http://dx.doi.org/doi:10.1016/j.chemgeo.2011.06.014 https://constellation.uqac.ca/id/eprint/3477/1/The%20concentration%20of%20platinum-group%20elements%20and%20gold%20in%20southern%20African%20and.pdf Maier Wolfgang D., Peltonen Petri, McDonald Iain, Barnes Sarah-Jane, Hatton Chris et Viljoen F. (2012). The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle. Chemical Geology, 302-303, p. 119-135. Sciences de la terre (géologie géographie) Africa Archean Commonwealth of Independent States continental lithosphere Europe geochemistry gold gold ores ICP mass spectra igneous rocks inclusions intrusions Kaapvaal Craton Karelia Karelia Russian ederation kimberlite komatiite lithogeochemistry lithosphere mantle mass spectra metal ores metallogeny metals mineral deposits genesis petrology pipes platinum group platinum ores Precambrian Russian Federation South Africa Southern Africa spectra trace elements upper mantle volcanic rocks X-ray fluorescence spectra xenoliths Article publié dans une revue avec comité d'évaluation Évalué par les pairs 2012 ftunivquebecchic https://doi.org/10.1016/j.chemgeo.2011.06.014 2023-07-15T22:13:39Z We have determined the concentrations of the platinum-group elements and gold in 111 mantle xenoliths from more than 20 kimberlite pipes in southern Africa and the Karelian craton, Fennoscandian Shield, with the aim to constrain the composition of the Archean- early Proterozoic primitive mantle. Average noble metal contents of the southern African peridotite xenoliths (in ppb) are 3.67 Ir, 6.54 Ru, 0.93 Rh, 4.3 Pt, 1.84 Pd, and 1.09 Au, and for the Karelian xenoliths 3.75 Ir, 6.58 Ru, 0.79 Rh, 4.84 Pt, 2.28 Pd, and 1.46 Au. The distribution of PGE-bearing phases is heterogenous, as in previously published datasets of lithospheric mantle from the Kaapvaal and other cratons. We argue that the heterogenous noble metal content of the cratonic lithospheric mantle is partly due to sluggish equilibration of the Archean mantle with late veneer (Maier et al., 2009, Nature, v. 460, 620-623). As a result, the noble metal content of the primitive mantle cannot be accurately determined using cratonic mantle samples. Younger mantle rocks (e.g., orogenic and oceanic peridotites) show more homogenous noble metal contents, but since they formed after the onset of crust formation it is debatable whether their composition accurately defines the noble metal content of PUM. Article in Journal/Newspaper Fennoscandian karelian Université du Québec à Chicoutimi (UQAC): Constellation Chemical Geology 302-303 119 135 |
institution |
Open Polar |
collection |
Université du Québec à Chicoutimi (UQAC): Constellation |
op_collection_id |
ftunivquebecchic |
language |
English |
topic |
Sciences de la terre (géologie géographie) Africa Archean Commonwealth of Independent States continental lithosphere Europe geochemistry gold gold ores ICP mass spectra igneous rocks inclusions intrusions Kaapvaal Craton Karelia Karelia Russian ederation kimberlite komatiite lithogeochemistry lithosphere mantle mass spectra metal ores metallogeny metals mineral deposits genesis petrology pipes platinum group platinum ores Precambrian Russian Federation South Africa Southern Africa spectra trace elements upper mantle volcanic rocks X-ray fluorescence spectra xenoliths |
spellingShingle |
Sciences de la terre (géologie géographie) Africa Archean Commonwealth of Independent States continental lithosphere Europe geochemistry gold gold ores ICP mass spectra igneous rocks inclusions intrusions Kaapvaal Craton Karelia Karelia Russian ederation kimberlite komatiite lithogeochemistry lithosphere mantle mass spectra metal ores metallogeny metals mineral deposits genesis petrology pipes platinum group platinum ores Precambrian Russian Federation South Africa Southern Africa spectra trace elements upper mantle volcanic rocks X-ray fluorescence spectra xenoliths Maier, Wolfgang D. Peltonen, Petri McDonald, Iain Barnes, Sarah-Jane Hatton, Chris Viljoen, F. The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
topic_facet |
Sciences de la terre (géologie géographie) Africa Archean Commonwealth of Independent States continental lithosphere Europe geochemistry gold gold ores ICP mass spectra igneous rocks inclusions intrusions Kaapvaal Craton Karelia Karelia Russian ederation kimberlite komatiite lithogeochemistry lithosphere mantle mass spectra metal ores metallogeny metals mineral deposits genesis petrology pipes platinum group platinum ores Precambrian Russian Federation South Africa Southern Africa spectra trace elements upper mantle volcanic rocks X-ray fluorescence spectra xenoliths |
description |
We have determined the concentrations of the platinum-group elements and gold in 111 mantle xenoliths from more than 20 kimberlite pipes in southern Africa and the Karelian craton, Fennoscandian Shield, with the aim to constrain the composition of the Archean- early Proterozoic primitive mantle. Average noble metal contents of the southern African peridotite xenoliths (in ppb) are 3.67 Ir, 6.54 Ru, 0.93 Rh, 4.3 Pt, 1.84 Pd, and 1.09 Au, and for the Karelian xenoliths 3.75 Ir, 6.58 Ru, 0.79 Rh, 4.84 Pt, 2.28 Pd, and 1.46 Au. The distribution of PGE-bearing phases is heterogenous, as in previously published datasets of lithospheric mantle from the Kaapvaal and other cratons. We argue that the heterogenous noble metal content of the cratonic lithospheric mantle is partly due to sluggish equilibration of the Archean mantle with late veneer (Maier et al., 2009, Nature, v. 460, 620-623). As a result, the noble metal content of the primitive mantle cannot be accurately determined using cratonic mantle samples. Younger mantle rocks (e.g., orogenic and oceanic peridotites) show more homogenous noble metal contents, but since they formed after the onset of crust formation it is debatable whether their composition accurately defines the noble metal content of PUM. |
format |
Article in Journal/Newspaper |
author |
Maier, Wolfgang D. Peltonen, Petri McDonald, Iain Barnes, Sarah-Jane Hatton, Chris Viljoen, F. |
author_facet |
Maier, Wolfgang D. Peltonen, Petri McDonald, Iain Barnes, Sarah-Jane Hatton, Chris Viljoen, F. |
author_sort |
Maier, Wolfgang D. |
title |
The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
title_short |
The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
title_full |
The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
title_fullStr |
The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
title_full_unstemmed |
The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle |
title_sort |
concentration of platinum-group elements and gold in southern african and karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the earth's mantle |
publishDate |
2012 |
url |
https://constellation.uqac.ca/id/eprint/3477/1/The%20concentration%20of%20platinum-group%20elements%20and%20gold%20in%20southern%20African%20and.pdf |
genre |
Fennoscandian karelian |
genre_facet |
Fennoscandian karelian |
op_relation |
https://constellation.uqac.ca/id/eprint/3477/ http://dx.doi.org/doi:10.1016/j.chemgeo.2011.06.014 https://constellation.uqac.ca/id/eprint/3477/1/The%20concentration%20of%20platinum-group%20elements%20and%20gold%20in%20southern%20African%20and.pdf Maier Wolfgang D., Peltonen Petri, McDonald Iain, Barnes Sarah-Jane, Hatton Chris et Viljoen F. (2012). The concentration of platinum-group elements and gold in southern African and Karelian kimberlite-hosted mantle xenoliths : implications for the noble metal content of the Earth's mantle. Chemical Geology, 302-303, p. 119-135. |
op_doi |
https://doi.org/10.1016/j.chemgeo.2011.06.014 |
container_title |
Chemical Geology |
container_volume |
302-303 |
container_start_page |
119 |
op_container_end_page |
135 |
_version_ |
1772814482045665280 |