RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA)
The paper reports the comprehensive study of phosphorus-rare metal (polymineral) carbonatites (I) and rare metal (ankerite) carbonatites (II) of the Tomtor massif based on ICP-MS, XRF, XRF-SI, SEM methods and isotope determination of C, O and 86Sr/87Sr. With a similar mineral composition, the REE+Y...
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Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2024-10-01
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| Series: | Геодинамика и тектонофизика |
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| Online Access: | https://www.gt-crust.ru/jour/article/view/1921 |
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| author | V. A. Ponomarchuk E. V. Lazareva S. M. Zhmodik A. V. Travin A. V. Tolstov |
| author_facet | V. A. Ponomarchuk E. V. Lazareva S. M. Zhmodik A. V. Travin A. V. Tolstov |
| author_sort | V. A. Ponomarchuk |
| collection | DOAJ |
| description | The paper reports the comprehensive study of phosphorus-rare metal (polymineral) carbonatites (I) and rare metal (ankerite) carbonatites (II) of the Tomtor massif based on ICP-MS, XRF, XRF-SI, SEM methods and isotope determination of C, O and 86Sr/87Sr. With a similar mineral composition, the REE+Y content in carbonatites (I) averages 0.38 wt. %, and in carbonatites (II) it is 1.3 wt. %. The δ18О-δ13С diagram provides the C and O isotopic compositions of carbonatites (I) and (II) as two intersecting trends: (I) carbonates from wells 4041, 6151, 115-117 represent the secondary generation of carbonates derived with the deuterium fluid involved; (II) depicts transformation of carbonate by low-T fluid, with fluid/rock ratio = 5. The study identified an increase in the REE and δ18O contents in carbonatites as the temperature of their formation decreases and enrichment of rocks with REE minerals, associated with REE mobility reduction in the fluid while the temperature is decreasing. |
| format | Article |
| id | doaj-art-fb3e8b8f18994f039cb653945c4c7d21 |
| institution | DOAJ |
| issn | 2078-502X |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj-art-fb3e8b8f18994f039cb653945c4c7d212025-08-20T03:02:41ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2024-10-0115510.5800/GT-2024-15-5-0785786RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA)V. A. Ponomarchuk0E. V. Lazareva1S. M. Zhmodik2A. V. Travin3A. V. Tolstov4Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesSobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of SciencesThe paper reports the comprehensive study of phosphorus-rare metal (polymineral) carbonatites (I) and rare metal (ankerite) carbonatites (II) of the Tomtor massif based on ICP-MS, XRF, XRF-SI, SEM methods and isotope determination of C, O and 86Sr/87Sr. With a similar mineral composition, the REE+Y content in carbonatites (I) averages 0.38 wt. %, and in carbonatites (II) it is 1.3 wt. %. The δ18О-δ13С diagram provides the C and O isotopic compositions of carbonatites (I) and (II) as two intersecting trends: (I) carbonates from wells 4041, 6151, 115-117 represent the secondary generation of carbonates derived with the deuterium fluid involved; (II) depicts transformation of carbonate by low-T fluid, with fluid/rock ratio = 5. The study identified an increase in the REE and δ18O contents in carbonatites as the temperature of their formation decreases and enrichment of rocks with REE minerals, associated with REE mobility reduction in the fluid while the temperature is decreasing.https://www.gt-crust.ru/jour/article/view/1921ree tomtor depositcarbonatitesstable isotopes of carbon and oxygen |
| spellingShingle | V. A. Ponomarchuk E. V. Lazareva S. M. Zhmodik A. V. Travin A. V. Tolstov RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) Геодинамика и тектонофизика ree tomtor deposit carbonatites stable isotopes of carbon and oxygen |
| title | RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) |
| title_full | RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) |
| title_fullStr | RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) |
| title_full_unstemmed | RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) |
| title_short | RELATION BETWEEN δ<sup>13</sup>С, δ<sup>18</sup>О AND REE CONTENT IN CARBONATITES OF THE TOMTOR COMPLEX, SAKHA REPUBLIC (YAKUTIA) |
| title_sort | relation between δ sup 13 sup с δ sup 18 sup о and ree content in carbonatites of the tomtor complex sakha republic yakutia |
| topic | ree tomtor deposit carbonatites stable isotopes of carbon and oxygen |
| url | https://www.gt-crust.ru/jour/article/view/1921 |
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