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| Keywords | |
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Fengfanggou gold deposit |
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fluid inclusion |
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orogenic gold deposit, CMF model |
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Jiamusi block |
| Authors | |
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ZHANG Peng-1 |
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QIAO Shu-Yan-1 |
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ZHAO Hua-Wei-2 |
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NIE Xi-Tao-2 |
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MEN Lan-Jing-3 |
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CUI Pei-Long-3 |
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YANG Feng-Chao-1 |
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3 |
| PubMed | |
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Article by Zhang, P. 1 |
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Article by Qiao, S. Y. 1 |
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Article by Zhao, H. W. 2 |
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Article by Nie, X. T. 2 |
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Article by Men, L. J. 3 |
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Article by Cui, P. L. 3 |
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Article by Yang, F. C. 1 |
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Article by 3 |
Characteristics of fluid inclusions and mineralization mechanism of Fengfanggou gold deposit in Yichun, Heilongjiang Province
ZHANG Peng-1, QIAO Shu-Yan-1, ZHAO Hua-Wei-2, NIE Xi-Tao-2, MEN Lan-Jing-3, CUI Pei-Long-3, YANG Feng-Chao-1, 3
1��Shenyang Institute of Geology and Mineral Resources��Shengyang 110034��China�� 2��Ceological Survey of Jilin Province��Changchun 130061��China�� 3��College of Earth Sciences, Jilin University��Changchun 130061��China
The Fengfanggou gold deposit is located in the northeast of Jiamusi block and its ore is quartz vein type in nature. The metallogentie fluid characteristics��genetic type of mineral deposit and metallogentic mechanism have been investigated through petrography��microthermometry and Raman microprobe of fluid inclusions��The resuits show��The main fluid inclusion is gas-liquid two-phase inclusion��with a little pure gaseous and pure liquid inclusions��the homogenization temperature of fluid inclusions is 240��-270��, the salinity is 1.74��6.30 wt%NaCI��the density is 0.68��0.92 g/cm3��and the metallogentic pressure and depth are 16��22 MPa and 1.6��2.2 km��respectively��the gaseous composition of inclusions are CO2 and H2O with a little CH4��belonging to CO2-CH4-H2O system. The metallogenic fluid is immiscible fluid��and the phase separation fomed in the immiseibilition of metallogenic fluids is the dominant mechanism for gold deposition and mineralization����Comparing with other typical orogenic gold deposits��Fengfanggou gold deposite belongs to hypabyssal orogenic gold deposit��and its met- allogenie mechanism can be explained by collisional petrogenesis and mineralization and fluid action(CMF)model.