Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia
Perovskite is a common accessory mineral in a variety of mafic and ultramafic rocks, but perovskite deposits are rare and studies of perovskite ore deposits are correspondingly scarce. Perovskite is a key rock-forming mineral and reaches exceptionally high concentrations in olivinites, diverse clino...
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ftunivtasecite:oai:ecite.utas.edu.au:129241 2023-05-15T17:04:55+02:00 Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia Potter, NJ Ferguson, MRM Kamenetsky, VS Chakhmouradian, AR Sharygin, VV Thompson, JM Goemann, K 2018 https://doi.org/10.1007/s00410-018-1531-9 http://ecite.utas.edu.au/129241 en eng Springer-Verlag http://dx.doi.org/10.1007/s00410-018-1531-9 http://purl.org/au-research/grants/arc/DP130100257 Potter, NJ and Ferguson, MRM and Kamenetsky, VS and Chakhmouradian, AR and Sharygin, VV and Thompson, JM and Goemann, K, Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia, Contributions to Mineralogy and Petrology, 173, (12) Article 100. ISSN 0010-7999 (2018) [Refereed Article] http://ecite.utas.edu.au/129241 Earth Sciences Geology Mineralogy and Crystallography Refereed Article PeerReviewed 2018 ftunivtasecite https://doi.org/10.1007/s00410-018-1531-9 2019-12-13T22:27:25Z Perovskite is a common accessory mineral in a variety of mafic and ultramafic rocks, but perovskite deposits are rare and studies of perovskite ore deposits are correspondingly scarce. Perovskite is a key rock-forming mineral and reaches exceptionally high concentrations in olivinites, diverse clinopyroxenites and silicocarbonatites in the Afrikanda alkalineultramafic complex (Kola Peninsula, NW Russia). Across these lithologies, we classify perovskite into three types (T1T3) based on crystal morphology, inclusion abundance, composition, and zonation. Perovskite in olivinites and some clinopyroxenites is represented by fine-grained, equigranular, monomineralic clusters and networks (T1). In contrast, perovskite in other clinopyroxenites and some silicocarbonatites has fine- to coarse-grained interlocked (T2) and massive (T3) textures. Electron backscatter diffraction reveals that some T1 and T2 perovskite grains in the olivinites and clinopyroxenites are composed of multiple subgrains and may represent stages of crystal rotation, coalescence and amalgamation. We propose that in the olivinites and clinopyroxenites, these processes result in the transformation of clusters and networks of fine-grained perovskite crystals (T1) to mosaics of more coarse-grained (T2) and massive perovskite (T3). This interpretation suggests that sub-solidus processes can lead to the development of coarse-grained and massive perovskite. A combination of characteristic features identified in the Afrikanda perovskite (equigranular crystal mosaics, interlocked irregular-shaped grains, and massive zones) is observed in other oxide ore deposits, particularly in layered intrusions of chromitites and intrusion-hosted magnetite deposits and suggests that the same amalgamation processes may be responsible for some of the coarse-grained and massive textures observed in oxide deposits worldwide. Article in Journal/Newspaper kola peninsula eCite UTAS (University of Tasmania) Kola Peninsula Afrikanda ENVELOPE(32.783,32.783,67.443,67.443) Contributions to Mineralogy and Petrology 173 12 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Geology Mineralogy and Crystallography |
spellingShingle |
Earth Sciences Geology Mineralogy and Crystallography Potter, NJ Ferguson, MRM Kamenetsky, VS Chakhmouradian, AR Sharygin, VV Thompson, JM Goemann, K Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
topic_facet |
Earth Sciences Geology Mineralogy and Crystallography |
description |
Perovskite is a common accessory mineral in a variety of mafic and ultramafic rocks, but perovskite deposits are rare and studies of perovskite ore deposits are correspondingly scarce. Perovskite is a key rock-forming mineral and reaches exceptionally high concentrations in olivinites, diverse clinopyroxenites and silicocarbonatites in the Afrikanda alkalineultramafic complex (Kola Peninsula, NW Russia). Across these lithologies, we classify perovskite into three types (T1T3) based on crystal morphology, inclusion abundance, composition, and zonation. Perovskite in olivinites and some clinopyroxenites is represented by fine-grained, equigranular, monomineralic clusters and networks (T1). In contrast, perovskite in other clinopyroxenites and some silicocarbonatites has fine- to coarse-grained interlocked (T2) and massive (T3) textures. Electron backscatter diffraction reveals that some T1 and T2 perovskite grains in the olivinites and clinopyroxenites are composed of multiple subgrains and may represent stages of crystal rotation, coalescence and amalgamation. We propose that in the olivinites and clinopyroxenites, these processes result in the transformation of clusters and networks of fine-grained perovskite crystals (T1) to mosaics of more coarse-grained (T2) and massive perovskite (T3). This interpretation suggests that sub-solidus processes can lead to the development of coarse-grained and massive perovskite. A combination of characteristic features identified in the Afrikanda perovskite (equigranular crystal mosaics, interlocked irregular-shaped grains, and massive zones) is observed in other oxide ore deposits, particularly in layered intrusions of chromitites and intrusion-hosted magnetite deposits and suggests that the same amalgamation processes may be responsible for some of the coarse-grained and massive textures observed in oxide deposits worldwide. |
format |
Article in Journal/Newspaper |
author |
Potter, NJ Ferguson, MRM Kamenetsky, VS Chakhmouradian, AR Sharygin, VV Thompson, JM Goemann, K |
author_facet |
Potter, NJ Ferguson, MRM Kamenetsky, VS Chakhmouradian, AR Sharygin, VV Thompson, JM Goemann, K |
author_sort |
Potter, NJ |
title |
Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
title_short |
Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
title_full |
Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
title_fullStr |
Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
title_full_unstemmed |
Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia |
title_sort |
textural evolution of perovskite in the afrikanda alkaline-ultramafic complex, kola peninsula, russia |
publisher |
Springer-Verlag |
publishDate |
2018 |
url |
https://doi.org/10.1007/s00410-018-1531-9 http://ecite.utas.edu.au/129241 |
long_lat |
ENVELOPE(32.783,32.783,67.443,67.443) |
geographic |
Kola Peninsula Afrikanda |
geographic_facet |
Kola Peninsula Afrikanda |
genre |
kola peninsula |
genre_facet |
kola peninsula |
op_relation |
http://dx.doi.org/10.1007/s00410-018-1531-9 http://purl.org/au-research/grants/arc/DP130100257 Potter, NJ and Ferguson, MRM and Kamenetsky, VS and Chakhmouradian, AR and Sharygin, VV and Thompson, JM and Goemann, K, Textural evolution of perovskite in the Afrikanda alkaline-ultramafic complex, Kola Peninsula, Russia, Contributions to Mineralogy and Petrology, 173, (12) Article 100. ISSN 0010-7999 (2018) [Refereed Article] http://ecite.utas.edu.au/129241 |
op_doi |
https://doi.org/10.1007/s00410-018-1531-9 |
container_title |
Contributions to Mineralogy and Petrology |
container_volume |
173 |
container_issue |
12 |
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1766059286288400384 |