Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia
Beryl is both an accessory and a rock-forming mineral in pegmatites that contain beryl, making it a major source of Be. Beryl-bearing pegmatites of the Shongui deposit, located in the Kola province of the Northeastern Fennoscandian Shield, hold beryl with a yellowish-greenish color. An investigation...
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ftdoajarticles:oai:doaj.org/article:368bcf2b94fd4584b81e0ee32f253f75 2023-11-12T04:17:05+01:00 Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia Lyudmila N. Morozova Sergey G. Skublov Dmitry R. Zozulya Pavel A. Serov Elena S. Borisenko Anna N. Solovjova Alexandra K. Gavrilchik 2023-10-01T00:00:00Z https://doi.org/10.3390/geosciences13100309 https://doaj.org/article/368bcf2b94fd4584b81e0ee32f253f75 EN eng MDPI AG https://www.mdpi.com/2076-3263/13/10/309 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences13100309 2076-3263 https://doaj.org/article/368bcf2b94fd4584b81e0ee32f253f75 Geosciences, Vol 13, Iss 309, p 309 (2023) beryl lithium cesium granitic pegmatite Kola province Shongui deposit Geology QE1-996.5 article 2023 ftdoajarticles https://doi.org/10.3390/geosciences13100309 2023-10-29T00:36:32Z Beryl is both an accessory and a rock-forming mineral in pegmatites that contain beryl, making it a major source of Be. Beryl-bearing pegmatites of the Shongui deposit, located in the Kola province of the Northeastern Fennoscandian Shield, hold beryl with a yellowish-greenish color. An investigation into the chemical composition of this beryl from pegmatite dike No. 7 has been performed for the first time via the secondary ion mass spectrometry (SIMS) technique, and the chemical composition of the beryl-bearing pegmatites has been analyzed for the first time by the inductively coupled plasma mass spectrometry (ICP-MS) method. These pegmatites have high concentrations (ppm) of Be (11.8), Li (30.9), Rb (482), Nb (50.3), Ta (14.6), Cs (66.8), and Mn (283) and low concentrations of Sr, Y, Ba, rare earth elements (REE), Zr, and Th. In the Shongui pegmatite field, concentrations of Be, Li, Rb, Cs, Nb, Ta, and Mn increase from barren to beryl-bearing pegmatites, whereas concentrations of Ba, Sr, Y, and REE decline. Rb/Ba, Rb/Sr, and Zr/Hf ratios, showing the fractionation degree, change from the barren to beryl-bearing pegmatites: Rb/Ba and Rb/Sr increase from 111 and 0.46 to 1365 and 8.06, respectively, and Zr/Hf decreases from 18.9 to 14.5. The chemical composition of beryl from the Shongui deposit is unique. This mineral has a concentration of 25,300 ppm of alkalis (Li, Cs, K, Rb, Na) and the average Li, Ce, and Na content is 4430, 5000, and 15,400 ppm, respectively. According to its chemical composition, the Shongui beryl belongs to the Li-Cs-Na type, a type that is not recognized in the available classifications. It is supposed that this beryl was mainly crystallized in the magmatic stage rather than in any hydrothermal and metasomatic stages. Two beryl groups have been distinguished in beryl-bearing pegmatite dike No. 7: beryl from the intermediate zone (Brl-I) and beryl from the core zone (Brl-II). These beryls are concluded to have crystallized in the following order: Brl-I and then Brl-II. Compared with Brl-I, ... Article in Journal/Newspaper Fennoscandian Directory of Open Access Journals: DOAJ Articles Oecologia 191 3 493 504 |
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English |
topic |
beryl lithium cesium granitic pegmatite Kola province Shongui deposit Geology QE1-996.5 |
spellingShingle |
beryl lithium cesium granitic pegmatite Kola province Shongui deposit Geology QE1-996.5 Lyudmila N. Morozova Sergey G. Skublov Dmitry R. Zozulya Pavel A. Serov Elena S. Borisenko Anna N. Solovjova Alexandra K. Gavrilchik Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
topic_facet |
beryl lithium cesium granitic pegmatite Kola province Shongui deposit Geology QE1-996.5 |
description |
Beryl is both an accessory and a rock-forming mineral in pegmatites that contain beryl, making it a major source of Be. Beryl-bearing pegmatites of the Shongui deposit, located in the Kola province of the Northeastern Fennoscandian Shield, hold beryl with a yellowish-greenish color. An investigation into the chemical composition of this beryl from pegmatite dike No. 7 has been performed for the first time via the secondary ion mass spectrometry (SIMS) technique, and the chemical composition of the beryl-bearing pegmatites has been analyzed for the first time by the inductively coupled plasma mass spectrometry (ICP-MS) method. These pegmatites have high concentrations (ppm) of Be (11.8), Li (30.9), Rb (482), Nb (50.3), Ta (14.6), Cs (66.8), and Mn (283) and low concentrations of Sr, Y, Ba, rare earth elements (REE), Zr, and Th. In the Shongui pegmatite field, concentrations of Be, Li, Rb, Cs, Nb, Ta, and Mn increase from barren to beryl-bearing pegmatites, whereas concentrations of Ba, Sr, Y, and REE decline. Rb/Ba, Rb/Sr, and Zr/Hf ratios, showing the fractionation degree, change from the barren to beryl-bearing pegmatites: Rb/Ba and Rb/Sr increase from 111 and 0.46 to 1365 and 8.06, respectively, and Zr/Hf decreases from 18.9 to 14.5. The chemical composition of beryl from the Shongui deposit is unique. This mineral has a concentration of 25,300 ppm of alkalis (Li, Cs, K, Rb, Na) and the average Li, Ce, and Na content is 4430, 5000, and 15,400 ppm, respectively. According to its chemical composition, the Shongui beryl belongs to the Li-Cs-Na type, a type that is not recognized in the available classifications. It is supposed that this beryl was mainly crystallized in the magmatic stage rather than in any hydrothermal and metasomatic stages. Two beryl groups have been distinguished in beryl-bearing pegmatite dike No. 7: beryl from the intermediate zone (Brl-I) and beryl from the core zone (Brl-II). These beryls are concluded to have crystallized in the following order: Brl-I and then Brl-II. Compared with Brl-I, ... |
format |
Article in Journal/Newspaper |
author |
Lyudmila N. Morozova Sergey G. Skublov Dmitry R. Zozulya Pavel A. Serov Elena S. Borisenko Anna N. Solovjova Alexandra K. Gavrilchik |
author_facet |
Lyudmila N. Morozova Sergey G. Skublov Dmitry R. Zozulya Pavel A. Serov Elena S. Borisenko Anna N. Solovjova Alexandra K. Gavrilchik |
author_sort |
Lyudmila N. Morozova |
title |
Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
title_short |
Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
title_full |
Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
title_fullStr |
Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
title_full_unstemmed |
Li-Cs-Na-Rich Beryl from Beryl-Bearing Pegmatite Dike No. 7 of the Shongui Deposit, Kola Province, Russia |
title_sort |
li-cs-na-rich beryl from beryl-bearing pegmatite dike no. 7 of the shongui deposit, kola province, russia |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/geosciences13100309 https://doaj.org/article/368bcf2b94fd4584b81e0ee32f253f75 |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Geosciences, Vol 13, Iss 309, p 309 (2023) |
op_relation |
https://www.mdpi.com/2076-3263/13/10/309 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences13100309 2076-3263 https://doaj.org/article/368bcf2b94fd4584b81e0ee32f253f75 |
op_doi |
https://doi.org/10.3390/geosciences13100309 |
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