| Инд. авторы: | Savelyeva V.B., Bazarova E.P., Sharygin V.V., Karmanov N.S. |
| Заглавие: | Zircon-Quartz-Calcite Segregations in Carbonate-Alkaline Metasomatic Rocks of the Western Baikal Region and Their Petrogenetic Implications |
| Библ. ссылка: | Savelyeva V.B., Bazarova E.P., Sharygin V.V., Karmanov N.S. Zircon-Quartz-Calcite Segregations in Carbonate-Alkaline Metasomatic Rocks of the Western Baikal Region and Their Petrogenetic Implications // Geology of Ore Deposits. - 2015. - Vol.57. - Iss. 8. - P.645-656. - ISSN 1075-7015. - EISSN 1555-6476. |
| Внешние системы: | DOI: 10.1134/S1075701515080097; РИНЦ: 26851738; SCOPUS: 2-s2.0-84952947359; WoS: 000367596800002; |
| Реферат: | eng: Fine-grained segregations up to 5 mm in size composed of graphic intergrowths of zircon, quartz, calcite and containing up to 0.8 wt % SrO have been found in albite-riebeckite and dolomite-biotite metasomatic rocks formed after alaskite granite. They contain magnetite, titanomagnetite (25.4 wt % TiO2), cerite-(Ce, Nd), rutile (up to 1.2 wt % Nb2O5), as well as rare micrograins of monazite-(Ce), bastnaesite-(Ce), and barite (up to 5.7 wt % SrO). The fine-grained structure of mineral aggregates suggests a metacolloidal nature. It is assumed that the zircon-quartz-calcite assemblage was formed due to exchange decomposition reaction between the salt phase of hydrothermal solution with predominant Na2CO3, elevated Zr and, to a lesser extent, Fe, Ti, LREE, Nb contents and dissolved calcium and silica compounds of a Na2SiO3 type.
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| Ключевые слова: | SPECIALIZATION; MAGMATOGENE FLUIDS; METAL-BEARING CAPACITY; |
| Издано: | 2015 |
| Физ. характеристика: | с.645-656 |