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2014, 33(2) 399-408 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Characteristics of fluid inclusions and genesis of Nailingou gold deposit in Aohan Banner of Inner Mongolia |
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CHEN Xu, SUN Guo-SHeng, SUN Zhen-Jun, WANG Chun-Guang |
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1. College of Earth Sciences��Jilin University��Changchun 130026��China; 2. Xinjiang Institute of Geo-Environment Monitoring��Wulumuqi 830000��China; 3. Department of Earthquake Science��Institute of Disaster Prevention��Beijing 101601��China |
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Abstract��
Nailingou gold deposit was hosted in the intermediate �� acidic volcanic deposits of the Yixian For- mation in Early Cretaceous�� The orebody was controlled by faults��and produced near by the magmatic rocks�� The fluid inclusions tests showed that the quartz inclusions of the three mineralization stages were gas and fluid inclu- sions��with gas-liquid ratio of 10% ��30%��homogenization temperature of 157. 2 ��279. 6 �棬and salinity of 5. 02 ��13. 88 wt% NaCl�� Mineralization pressure ranged from 14. 8 to 30. 4 MPa��with hydrostatic pressure depth of 1. 48 �� 3. 04 km�� The gas of inclusions mainly composed of H2O and CO2��indicates the ore-forming fluid of Nailingou deposit belonging to the NaCl-H2O-CO2hydrothermal system�� Comprehensive analysis showed that the Nailingou gold deposit was affected by Yanshanian intrusion��which was the shallow medium-low-temperature gold deposit�� |
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Keywords��
Nailingou gold deposit
characteristics of deposit
fluid inclusions
genesis
Inner Mongolia
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Received Revised Online: |
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