GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS
The miarolitic dunites of the Nizhny Tagil massif (Central Urals), the structure of miaroles and the principles of co-occurrence of minerals are studied. Garnets from miaroles are characterized in details and are compared with those from chromitites and metasomatites after dunites. The structure of...
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South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2022-12-01
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| Series: | Минералогия |
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| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2022/12/2022_8_4_4.pdf |
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| author | S.Yu. Stepanov R.S. Palamarchuk V.V. Shilovskikh D.A. Artemiev A.V. Korneev A.K. Kozin |
| author_facet | S.Yu. Stepanov R.S. Palamarchuk V.V. Shilovskikh D.A. Artemiev A.V. Korneev A.K. Kozin |
| author_sort | S.Yu. Stepanov |
| collection | DOAJ |
| description | The miarolitic dunites of the Nizhny Tagil massif (Central Urals), the structure of miaroles and the principles of co-occurrence of minerals are studied. Garnets from miaroles are characterized in details and are compared with those from chromitites and metasomatites after dunites. The structure of miarolitic dunites and miaroles is described using ontogenic approaches. The structure and composition of garnets are studied by SEM and LA-ICP-MS. Three assemblages of garnets are established in rocks of the Nizhny Tagil massif: Cr-andradite in miarolitic dunites, uvarovite in massive veined chromitites and demantoid in metasomatites after dunites. Garnets from all assemblages belong to the ugrandite group and are characterized by specific features of chemical composition including higher Cr2O3 content. Garnets are also characterized by contrasting concentrations of trace elements, such as V, Mn and Ti, as well as differences in REE pattern. A paragenetic sequence of formation of major rock-forming minerals is suggested for dunites, chromites and metasomatites after dunites of the Nizhny Tagil massif. |
| format | Article |
| id | doaj-art-3205d0f441ee4bfc9f6a2f49f84f718d |
| institution | Kabale University |
| issn | 2313-545X 2782-2044 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | South Urals Federal Research Center of Mineralogy and Geoecology UB RAS |
| record_format | Article |
| series | Минералогия |
| spelling | doaj-art-3205d0f441ee4bfc9f6a2f49f84f718d2025-02-10T11:40:41ZengSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASМинералогия2313-545X2782-20442022-12-0184597810.35597/2313-545X-2022-8-4-4GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALSS.Yu. Stepanov0R.S. Palamarchuk1V.V. Shilovskikh2D.A. Artemiev3A.V. Korneev4A.K. Kozin5Institute of Geology and Geochemistry UB RASSouth Urals Federal Research Center of Mineralogy and Geoecology UB RASSt. Petersburg State UniversitySouth Urals Federal Research Center of Mineralogy and Geoecology UB RASInstitute of Geology and Geochemistry UB RASInstitute of Geology and Geochemistry UB RASThe miarolitic dunites of the Nizhny Tagil massif (Central Urals), the structure of miaroles and the principles of co-occurrence of minerals are studied. Garnets from miaroles are characterized in details and are compared with those from chromitites and metasomatites after dunites. The structure of miarolitic dunites and miaroles is described using ontogenic approaches. The structure and composition of garnets are studied by SEM and LA-ICP-MS. Three assemblages of garnets are established in rocks of the Nizhny Tagil massif: Cr-andradite in miarolitic dunites, uvarovite in massive veined chromitites and demantoid in metasomatites after dunites. Garnets from all assemblages belong to the ugrandite group and are characterized by specific features of chemical composition including higher Cr2O3 content. Garnets are also characterized by contrasting concentrations of trace elements, such as V, Mn and Ti, as well as differences in REE pattern. A paragenetic sequence of formation of major rock-forming minerals is suggested for dunites, chromites and metasomatites after dunites of the Nizhny Tagil massif.https://journal.mineralogy.ru/wp-content/uploads/2022/12/2022_8_4_4.pdf: garnetsdemantoidsla-icp-msnizhny tagil massifdunitespegmatitesurals platinum belt |
| spellingShingle | S.Yu. Stepanov R.S. Palamarchuk V.V. Shilovskikh D.A. Artemiev A.V. Korneev A.K. Kozin GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS Минералогия : garnets demantoids la-icp-ms nizhny tagil massif dunites pegmatites urals platinum belt |
| title | GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS |
| title_full | GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS |
| title_fullStr | GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS |
| title_full_unstemmed | GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS |
| title_short | GARNET MINERALIZATION ASSOCIATED WITH LATE MAGMATIC AND HYDROTHERMAL-METASOMATIC PROCESSES IN DUNITES OF THE NIZHNY TAGIL CLINOPYROXENITE-DUNITE MASSIF, CENTRAL URALS |
| title_sort | garnet mineralization associated with late magmatic and hydrothermal metasomatic processes in dunites of the nizhny tagil clinopyroxenite dunite massif central urals |
| topic | : garnets demantoids la-icp-ms nizhny tagil massif dunites pegmatites urals platinum belt |
| url | https://journal.mineralogy.ru/wp-content/uploads/2022/12/2022_8_4_4.pdf |
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