The Metallogenic Mechanism of Skarn Sn-Polymetallic Deposits in the Southern Great Khingan Range, China: Constraints on the Geological and Geochemical Characteristics of Damogutu Sn–Fe and Dashishan Sn–Pb–Zn Deposits
| Autor: | Chaolei Yang, Xin-You Zhu, Shangsong Yang, Binbin Jiang, Heng Wang, Tao Zou, Yujie Li, Xi-Yin Cheng, Haoyuan Jiang |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Mineralization (geology)
lcsh:Mineralogy lcsh:QE351-399.2 010504 meteorology & atmospheric sciences source granitoid Damogutu Sn–Fe deposit Geochemistry Late stage Geology Skarn 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Hydrothermal circulation skarn deposit Mineral redox buffer ore-forming fluids Syenogranite Continuous evolution 0105 earth and related environmental sciences Dashishan Sn–Pb–Zn deposit |
| Zdroj: | Minerals, Vol 9, Iss 7, p 418 (2019) Minerals Volume 9 Issue 7 |
| Popis: | Skarn Sn-polymetallic deposits, located in the southern Great Khingan Range, can be divided into Sn&ndash Fe and Sn&ndash Pb&ndash Zn deposits. By systematically studying the geochemical characteristics of source granitoid and deposits, the ore-forming mechanisms were established, and the differences in ore-forming processes between Sn&ndash Zn deposits are discussed. The main findings are as follows: (1) these two deposits were formed in the Late-Yanshanian period (2) the source granitoid evolved at an early stage in a reducing environment, while the oxygen fugacity increased at a late stage through the influence of a deep-seated fault (3) fine-grained syenogranite from Dashishan showed a higher degree of evolution than the syenogranite from Damogutu (4) the Damogutu Sn&ndash Fe and Dashishan Sn&ndash Zn deposits shared a source of ore-forming fluid, and Fe, Sn, Pb, and Zn all derived from Late-Yanshanian granitoids and (5) the ore-forming fluid experienced a continuous evolution process from the magmatic to hydrothermal stage, and the magmatic&ndash hydrothermal transitional fluid played a very important role in skarnization and mineralization. |
| Databáze: | OpenAIRE |
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