Typomorphic features of magnetite from tomtor massif camaphorites
Background. The paper presents new data on the material composition and formation conditions of apatite-magnetite rocks (phoscorite and camaphorites) from the Onkuchakh deposit within the Tomtor massif drawing on the study into the typomorphic features of magnetite.Aim. To study the morphology, chem...
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Sergo Ordzhonikidze Russian State University for Geological Prospecting
2022
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Online Access: | https://doi.org/10.32454/0016-7762-2020-63-6-66-76 https://doaj.org/article/6b7710353766449d829f7c95461c5f84 |
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ftdoajarticles:oai:doaj.org/article:6b7710353766449d829f7c95461c5f84 2023-05-15T18:47:48+02:00 Typomorphic features of magnetite from tomtor massif camaphorites L. N. Baranov A. V. Tolstov 2022-06-01T00:00:00Z https://doi.org/10.32454/0016-7762-2020-63-6-66-76 https://doaj.org/article/6b7710353766449d829f7c95461c5f84 RU rus Sergo Ordzhonikidze Russian State University for Geological Prospecting https://www.geology-mgri.ru/jour/article/view/733 https://doaj.org/toc/0016-7762 https://doaj.org/toc/2618-8708 0016-7762 2618-8708 doi:10.32454/0016-7762-2020-63-6-66-76 https://doaj.org/article/6b7710353766449d829f7c95461c5f84 Известия высших учебных заведений: Геология и разведка, Vol 63, Iss 6, Pp 66-76 (2022) сибирская платформа якутия томтор камафорит карбонатит фоскорит магнетит ильменит Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.32454/0016-7762-2020-63-6-66-76 2023-03-19T01:40:25Z Background. The paper presents new data on the material composition and formation conditions of apatite-magnetite rocks (phoscorite and camaphorites) from the Onkuchakh deposit within the Tomtor massif drawing on the study into the typomorphic features of magnetite.Aim. To study the morphology, chemical composition, and relations of magnetite with associated minerals in apatite-magnetite rocks from the Onkuchakh deposit (Tomtor massif).Materials and methods. The study employed core samples measuring 177 m in total length (borehole No. 801, Onkuchakh field, Tomtor massif). In order to determine the composition of recovered minerals, the following instruments were used: JEOL JXA-8230 Electron Probe Microanalyzer (ALROSA, Mirny, Russia); TESCAN MIRA 3 LMU field emission scanning electron microscope equipped with an Oxford Instruments INCA Energy 450+ energy dispersive spectrometer with an XMax-80 detector (ALROSA, Mirny; V. S. Sobolev Institute of Geology and Mineralogy, SB RAS). The measurements were performed according to a standard procedure: accelerating voltage — 20 kV; current — 1 nA; counting time — from 60 s; probe size — 2 μm. Instrument calibration was carried out using a set of characterized artificial compounds and natural minerals; instrument stability was confirmed by measuring Co line intensity.Results. The authors identified the textural and structural features of magnetite ores, as well as ascertaining their relations with the areas of camaphorites characterized by different material composition and host rocks. The impact of superimposed hydrothermal processes was determined. In addition, a detailed morphological characterization was provided for magnetite found to comprise two generations: primary magmatic magnetite and that transformed under the influence of superimposed processes. Finally, representative data on the chemical composition of magnetite were obtained.Conclusion. It is concluded that magnetite is formed through a magmatic process involving crystallization differentiation. The ... Article in Journal/Newspaper Якути* Якутия Directory of Open Access Journals: DOAJ Articles Mira ENVELOPE(10.500,10.500,-70.417,-70.417) Inca ENVELOPE(-59.194,-59.194,-62.308,-62.308) Onkuchakh ENVELOPE(114.700,114.700,66.233,66.233) Mirny ENVELOPE(113.961,113.961,62.535,62.535) Proceedings of higher educational establishments. Geology and Exploration 63 6 66 76 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
сибирская платформа якутия томтор камафорит карбонатит фоскорит магнетит ильменит Geology QE1-996.5 |
spellingShingle |
сибирская платформа якутия томтор камафорит карбонатит фоскорит магнетит ильменит Geology QE1-996.5 L. N. Baranov A. V. Tolstov Typomorphic features of magnetite from tomtor massif camaphorites |
topic_facet |
сибирская платформа якутия томтор камафорит карбонатит фоскорит магнетит ильменит Geology QE1-996.5 |
description |
Background. The paper presents new data on the material composition and formation conditions of apatite-magnetite rocks (phoscorite and camaphorites) from the Onkuchakh deposit within the Tomtor massif drawing on the study into the typomorphic features of magnetite.Aim. To study the morphology, chemical composition, and relations of magnetite with associated minerals in apatite-magnetite rocks from the Onkuchakh deposit (Tomtor massif).Materials and methods. The study employed core samples measuring 177 m in total length (borehole No. 801, Onkuchakh field, Tomtor massif). In order to determine the composition of recovered minerals, the following instruments were used: JEOL JXA-8230 Electron Probe Microanalyzer (ALROSA, Mirny, Russia); TESCAN MIRA 3 LMU field emission scanning electron microscope equipped with an Oxford Instruments INCA Energy 450+ energy dispersive spectrometer with an XMax-80 detector (ALROSA, Mirny; V. S. Sobolev Institute of Geology and Mineralogy, SB RAS). The measurements were performed according to a standard procedure: accelerating voltage — 20 kV; current — 1 nA; counting time — from 60 s; probe size — 2 μm. Instrument calibration was carried out using a set of characterized artificial compounds and natural minerals; instrument stability was confirmed by measuring Co line intensity.Results. The authors identified the textural and structural features of magnetite ores, as well as ascertaining their relations with the areas of camaphorites characterized by different material composition and host rocks. The impact of superimposed hydrothermal processes was determined. In addition, a detailed morphological characterization was provided for magnetite found to comprise two generations: primary magmatic magnetite and that transformed under the influence of superimposed processes. Finally, representative data on the chemical composition of magnetite were obtained.Conclusion. It is concluded that magnetite is formed through a magmatic process involving crystallization differentiation. The ... |
format |
Article in Journal/Newspaper |
author |
L. N. Baranov A. V. Tolstov |
author_facet |
L. N. Baranov A. V. Tolstov |
author_sort |
L. N. Baranov |
title |
Typomorphic features of magnetite from tomtor massif camaphorites |
title_short |
Typomorphic features of magnetite from tomtor massif camaphorites |
title_full |
Typomorphic features of magnetite from tomtor massif camaphorites |
title_fullStr |
Typomorphic features of magnetite from tomtor massif camaphorites |
title_full_unstemmed |
Typomorphic features of magnetite from tomtor massif camaphorites |
title_sort |
typomorphic features of magnetite from tomtor massif camaphorites |
publisher |
Sergo Ordzhonikidze Russian State University for Geological Prospecting |
publishDate |
2022 |
url |
https://doi.org/10.32454/0016-7762-2020-63-6-66-76 https://doaj.org/article/6b7710353766449d829f7c95461c5f84 |
long_lat |
ENVELOPE(10.500,10.500,-70.417,-70.417) ENVELOPE(-59.194,-59.194,-62.308,-62.308) ENVELOPE(114.700,114.700,66.233,66.233) ENVELOPE(113.961,113.961,62.535,62.535) |
geographic |
Mira Inca Onkuchakh Mirny |
geographic_facet |
Mira Inca Onkuchakh Mirny |
genre |
Якути* Якутия |
genre_facet |
Якути* Якутия |
op_source |
Известия высших учебных заведений: Геология и разведка, Vol 63, Iss 6, Pp 66-76 (2022) |
op_relation |
https://www.geology-mgri.ru/jour/article/view/733 https://doaj.org/toc/0016-7762 https://doaj.org/toc/2618-8708 0016-7762 2618-8708 doi:10.32454/0016-7762-2020-63-6-66-76 https://doaj.org/article/6b7710353766449d829f7c95461c5f84 |
op_doi |
https://doi.org/10.32454/0016-7762-2020-63-6-66-76 |
container_title |
Proceedings of higher educational establishments. Geology and Exploration |
container_volume |
63 |
container_issue |
6 |
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66 |
op_container_end_page |
76 |
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