Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia
Chevkinite-(Ce) in a mineralized quartz-epidote metasomatite from the Keivy massif, Kola Peninsula, Russia, underwent at least two stages of low-temperature alteration. In the first, it interacted with hydrothermal fluids, with loss of Ca, Fe, LREE and Si and strong enrichment in Ti. The altered che...
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ftulancaster:oai:eprints.lancs.ac.uk:81249 2023-08-27T04:10:25+02:00 Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia MacDonald, Raymond Bagiński, Bogusław Kartashov, Pavel M. Zozulya, Dmitry Dzierzanowski, Piotr 2015-10 https://eprints.lancs.ac.uk/id/eprint/81249/ https://doi.org/10.1180/minmag.2015.079.5.02 unknown MacDonald, Raymond and Bagiński, Bogusław and Kartashov, Pavel M. and Zozulya, Dmitry and Dzierzanowski, Piotr (2015) Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia. Mineralogical Magazine, 79 (5). pp. 1039-1059. ISSN 0026-461X Journal Article PeerReviewed 2015 ftulancaster https://doi.org/10.1180/minmag.2015.079.5.02 2023-08-03T22:29:56Z Chevkinite-(Ce) in a mineralized quartz-epidote metasomatite from the Keivy massif, Kola Peninsula, Russia, underwent at least two stages of low-temperature alteration. In the first, it interacted with hydrothermal fluids, with loss of Ca, Fe, LREE and Si and strong enrichment in Ti. The altered chevkinite was then rimmed and partially replaced by a zone of ferriallanite-(Ce) and davidite-(La), in turn rimmed by a zone of allanite-(Ce) richer in the epidote component. The allanite zone was in turn partially replaced by rutile-titanite-quartz assemblages, the formation of titanite postdating that of rutile. Aeschynite-(Y), aeschynite-(Ce) and REE-carbonates are accessory phases in all zones. The hydrothermal fluids were alkaline, with significant proportions of CO2 and F. At various alteration stages, the Ca, Si ± Al activities in the fluid were high. Formation of the aeschynite is discussed in relation to its stability in broadly similar parageneses; it was a primary phase in the unaltered chevkinite zone whereas in other zones it formed from Nb, Ti, REE and Th released from the major phases. Article in Journal/Newspaper kola peninsula Lancaster University: Lancaster Eprints Kola Peninsula Mineralogical Magazine 79 5 1039 1059 |
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Lancaster University: Lancaster Eprints |
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Chevkinite-(Ce) in a mineralized quartz-epidote metasomatite from the Keivy massif, Kola Peninsula, Russia, underwent at least two stages of low-temperature alteration. In the first, it interacted with hydrothermal fluids, with loss of Ca, Fe, LREE and Si and strong enrichment in Ti. The altered chevkinite was then rimmed and partially replaced by a zone of ferriallanite-(Ce) and davidite-(La), in turn rimmed by a zone of allanite-(Ce) richer in the epidote component. The allanite zone was in turn partially replaced by rutile-titanite-quartz assemblages, the formation of titanite postdating that of rutile. Aeschynite-(Y), aeschynite-(Ce) and REE-carbonates are accessory phases in all zones. The hydrothermal fluids were alkaline, with significant proportions of CO2 and F. At various alteration stages, the Ca, Si ± Al activities in the fluid were high. Formation of the aeschynite is discussed in relation to its stability in broadly similar parageneses; it was a primary phase in the unaltered chevkinite zone whereas in other zones it formed from Nb, Ti, REE and Th released from the major phases. |
format |
Article in Journal/Newspaper |
author |
MacDonald, Raymond Bagiński, Bogusław Kartashov, Pavel M. Zozulya, Dmitry Dzierzanowski, Piotr |
spellingShingle |
MacDonald, Raymond Bagiński, Bogusław Kartashov, Pavel M. Zozulya, Dmitry Dzierzanowski, Piotr Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
author_facet |
MacDonald, Raymond Bagiński, Bogusław Kartashov, Pavel M. Zozulya, Dmitry Dzierzanowski, Piotr |
author_sort |
MacDonald, Raymond |
title |
Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
title_short |
Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
title_full |
Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
title_fullStr |
Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
title_full_unstemmed |
Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia |
title_sort |
hydrothermal alteration of chevkinite-group minerals:part 2. metasomatite from the keivy massif, kola peninsula, russia |
publishDate |
2015 |
url |
https://eprints.lancs.ac.uk/id/eprint/81249/ https://doi.org/10.1180/minmag.2015.079.5.02 |
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Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_relation |
MacDonald, Raymond and Bagiński, Bogusław and Kartashov, Pavel M. and Zozulya, Dmitry and Dzierzanowski, Piotr (2015) Hydrothermal alteration of chevkinite-group minerals:Part 2. Metasomatite from the Keivy massif, Kola Peninsula, Russia. Mineralogical Magazine, 79 (5). pp. 1039-1059. ISSN 0026-461X |
op_doi |
https://doi.org/10.1180/minmag.2015.079.5.02 |
container_title |
Mineralogical Magazine |
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79 |
container_issue |
5 |
container_start_page |
1039 |
op_container_end_page |
1059 |
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1775352438043181056 |