MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION
The composition of barophilic minerals from mantle xenoliths and Cpx from concentrates of the Kuranakh, Luchakan, Dyuken, and Ary-Mastakh fields of the Anabar region has been studied. Under these fields, the lithospheric mantle compositions vary significantly. The PT parameters of crystallization we...
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| Format: | Article |
| Language: | English |
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2022-10-01
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| Series: | Геодинамика и тектонофизика |
| Subjects: | |
| Online Access: | https://www.gt-crust.ru/jour/article/view/1560 |
| _version_ | 1797855693540163584 |
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| author | S. I. Kostrovitsky T. V. Kalashnikova I. V. Ashchepkov |
| author_facet | S. I. Kostrovitsky T. V. Kalashnikova I. V. Ashchepkov |
| author_sort | S. I. Kostrovitsky |
| collection | DOAJ |
| description | The composition of barophilic minerals from mantle xenoliths and Cpx from concentrates of the Kuranakh, Luchakan, Dyuken, and Ary-Mastakh fields of the Anabar region has been studied. Under these fields, the lithospheric mantle compositions vary significantly. The PT parameters of crystallization were calculated using the composition of clinopyroxenes from xenoliths and heavy fraction of kimberlites. The lithospheric mantle rocks under the northern fields have higher values of Mg# of minerals and calculated mantle geotherm (35–48 mW/m2) compared to the parameters for the southern diamond fields. The pipes from the southwestern part of the Ary-Mastakh field are promising for the diamond potential, presenting Grt-bearing lherzolites and harzburgites with a high content of Cr2O3 (to 8.5 wt. %). |
| first_indexed | 2024-04-09T20:27:54Z |
| format | Article |
| id | doaj.art-a42ec0dba5b14d09a9f6b61591d4074d |
| institution | Directory Open Access Journal |
| issn | 2078-502X |
| language | English |
| last_indexed | 2024-04-09T20:27:54Z |
| publishDate | 2022-10-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj.art-a42ec0dba5b14d09a9f6b61591d4074d2023-03-30T20:08:06ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2022-10-0113410.5800/GT-2022-13-4-0665665MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGIONS. I. Kostrovitsky0T. V. Kalashnikova1I. V. Ashchepkov2Vinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences; Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of SciencesVinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of SciencesVinogradov Institute of Geochemistry, Siberian Branch of the Russian Academy of Sciences; Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesThe composition of barophilic minerals from mantle xenoliths and Cpx from concentrates of the Kuranakh, Luchakan, Dyuken, and Ary-Mastakh fields of the Anabar region has been studied. Under these fields, the lithospheric mantle compositions vary significantly. The PT parameters of crystallization were calculated using the composition of clinopyroxenes from xenoliths and heavy fraction of kimberlites. The lithospheric mantle rocks under the northern fields have higher values of Mg# of minerals and calculated mantle geotherm (35–48 mW/m2) compared to the parameters for the southern diamond fields. The pipes from the southwestern part of the Ary-Mastakh field are promising for the diamond potential, presenting Grt-bearing lherzolites and harzburgites with a high content of Cr2O3 (to 8.5 wt. %).https://www.gt-crust.ru/jour/article/view/1560lithospheric mantleanabar kimberlite fieldsgarnetclinopyroxenept parameters of mineral crystallization |
| spellingShingle | S. I. Kostrovitsky T. V. Kalashnikova I. V. Ashchepkov MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION Геодинамика и тектонофизика lithospheric mantle anabar kimberlite fields garnet clinopyroxene pt parameters of mineral crystallization |
| title | MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION |
| title_full | MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION |
| title_fullStr | MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION |
| title_full_unstemmed | MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION |
| title_short | MINERAL COMPOSITION AND PT PARAMETERS OF CRYSTALLIZATION OF MANTLE ROCKS UNDER KIMBERLITE FIELDS OF THE ANABAR REGION |
| title_sort | mineral composition and pt parameters of crystallization of mantle rocks under kimberlite fields of the anabar region |
| topic | lithospheric mantle anabar kimberlite fields garnet clinopyroxene pt parameters of mineral crystallization |
| url | https://www.gt-crust.ru/jour/article/view/1560 |
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