The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden.
Molybdenite in the Aitik deposit and its southern extension was studied through mineralogical/chemical analysis and laboratory flotation tests. It is demonstrated that molybdenite varies considerably in grain size, ranging from coarse (>20 μm) to very fine (<2 μm) and occurs predominantly as s...
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Online Access: | http://dro.dur.ac.uk/14224/ http://dro.dur.ac.uk/14224/1/14224.pdf https://doi.org/10.3390/min4040788 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:14224 2023-05-15T17:44:27+02:00 The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. Wanhainen, C. Nigatu, W. Selby, D. McLeod, C. Nordin, R. Bolin, N-J. 2014-12-01 application/pdf http://dro.dur.ac.uk/14224/ http://dro.dur.ac.uk/14224/1/14224.pdf https://doi.org/10.3390/min4040788 unknown MDPI dro:14224 issn:2075-163X doi:10.3390/min4040788 http://dro.dur.ac.uk/14224/ http://dx.doi.org/10.3390/min4040788 http://dro.dur.ac.uk/14224/1/14224.pdf © 2014 by the authors; licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. CC-BY Minerals, 2014, Vol.4(4), pp.788-814 [Peer Reviewed Journal] Aitik deposit Northern Sweden Molybdenite Rhenium QEMSCAN Dilution ICP-MS Mineral processing Ore characterization Article PeerReviewed 2014 ftunivdurham https://doi.org/10.3390/min4040788 2020-05-28T22:31:47Z Molybdenite in the Aitik deposit and its southern extension was studied through mineralogical/chemical analysis and laboratory flotation tests. It is demonstrated that molybdenite varies considerably in grain size, ranging from coarse (>20 μm) to very fine (<2 μm) and occurs predominantly as single grains in the groundmass of the rocks, as grain aggregates, and intergrown with chalcopyrite and pyrite. The dominating molybdenite-bearing rocks are the mica schists, the quartz-monzodiorite, and the Salmijärvi biotite-amphibole gneiss, the latter containing mostly medium-coarsegrained molybdenite. Later geological features, such as garnet-magnetite-anhydrite-K feldspar alteration and pegmatite dikes appear to be responsible for a significant part of the distribution pattern of molybdenite. Molybdenite grains contain up to 1587 ppm Re, with an average of 211 ± 10 ppm in Aitik molybdenite and 452 ± 33 ppm in Salmijärvi molybdenite. The higher Re concentrations are found in molybdenite associated with sericite- and quartz-amphibole-magnetite altered rocks, whereas low Re values occur in rocks in which potassic alteration is prominent. Molybdenite recovery is influenced by the mineralogy of the host rock and the alteration grade; hence both of these factors will have an impact on potential recoveries. The recovery of molybdenite was lower from flotation feeds with significant amounts of Mg-bearing clay-micas. Article in Journal/Newspaper Northern Sweden Norrbotten Durham University: Durham Research Online Salmijärvi ENVELOPE(29.483,29.483,65.600,65.600) Minerals 4 4 788 814 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
topic |
Aitik deposit Northern Sweden Molybdenite Rhenium QEMSCAN Dilution ICP-MS Mineral processing Ore characterization |
spellingShingle |
Aitik deposit Northern Sweden Molybdenite Rhenium QEMSCAN Dilution ICP-MS Mineral processing Ore characterization Wanhainen, C. Nigatu, W. Selby, D. McLeod, C. Nordin, R. Bolin, N-J. The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
topic_facet |
Aitik deposit Northern Sweden Molybdenite Rhenium QEMSCAN Dilution ICP-MS Mineral processing Ore characterization |
description |
Molybdenite in the Aitik deposit and its southern extension was studied through mineralogical/chemical analysis and laboratory flotation tests. It is demonstrated that molybdenite varies considerably in grain size, ranging from coarse (>20 μm) to very fine (<2 μm) and occurs predominantly as single grains in the groundmass of the rocks, as grain aggregates, and intergrown with chalcopyrite and pyrite. The dominating molybdenite-bearing rocks are the mica schists, the quartz-monzodiorite, and the Salmijärvi biotite-amphibole gneiss, the latter containing mostly medium-coarsegrained molybdenite. Later geological features, such as garnet-magnetite-anhydrite-K feldspar alteration and pegmatite dikes appear to be responsible for a significant part of the distribution pattern of molybdenite. Molybdenite grains contain up to 1587 ppm Re, with an average of 211 ± 10 ppm in Aitik molybdenite and 452 ± 33 ppm in Salmijärvi molybdenite. The higher Re concentrations are found in molybdenite associated with sericite- and quartz-amphibole-magnetite altered rocks, whereas low Re values occur in rocks in which potassic alteration is prominent. Molybdenite recovery is influenced by the mineralogy of the host rock and the alteration grade; hence both of these factors will have an impact on potential recoveries. The recovery of molybdenite was lower from flotation feeds with significant amounts of Mg-bearing clay-micas. |
format |
Article in Journal/Newspaper |
author |
Wanhainen, C. Nigatu, W. Selby, D. McLeod, C. Nordin, R. Bolin, N-J. |
author_facet |
Wanhainen, C. Nigatu, W. Selby, D. McLeod, C. Nordin, R. Bolin, N-J. |
author_sort |
Wanhainen, C. |
title |
The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
title_short |
The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
title_full |
The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
title_fullStr |
The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
title_full_unstemmed |
The distribution, character, and rhenium content of molybdenite in the Aitik Cu-Au-Ag-(Mo) deposit and its southern extension in the northern Norrbotten ore district, northern Sweden. |
title_sort |
distribution, character, and rhenium content of molybdenite in the aitik cu-au-ag-(mo) deposit and its southern extension in the northern norrbotten ore district, northern sweden. |
publisher |
MDPI |
publishDate |
2014 |
url |
http://dro.dur.ac.uk/14224/ http://dro.dur.ac.uk/14224/1/14224.pdf https://doi.org/10.3390/min4040788 |
long_lat |
ENVELOPE(29.483,29.483,65.600,65.600) |
geographic |
Salmijärvi |
geographic_facet |
Salmijärvi |
genre |
Northern Sweden Norrbotten |
genre_facet |
Northern Sweden Norrbotten |
op_source |
Minerals, 2014, Vol.4(4), pp.788-814 [Peer Reviewed Journal] |
op_relation |
dro:14224 issn:2075-163X doi:10.3390/min4040788 http://dro.dur.ac.uk/14224/ http://dx.doi.org/10.3390/min4040788 http://dro.dur.ac.uk/14224/1/14224.pdf |
op_rights |
© 2014 by the authors; licensee MDPI, Basel, Switzerland. This is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3390/min4040788 |
container_title |
Minerals |
container_volume |
4 |
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4 |
container_start_page |
788 |
op_container_end_page |
814 |
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1766146672808689664 |