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2014, 33(3) 564-571 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Geological characteristics of Wufeng gold deposit in Yanbian of Jilin and its genesis |
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XU Ai-Jun, QIN Dan-He, WANG Jian-Yu, KAN Jian-Ming, LI Jian-Feng, WANG Cheng-Yang, WANG Ke-Yong |
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1. Jilin Haigou Gold Mining Co. Ltd�� ��Antu 133611��Jilin��China; 2. College of Earth Sciences��Jilin University��Changchun 130061��China |
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Abstract��
Wufeng gold deposit is an important epithermal gold deposit in Yanbian area�� The gold-bearing quartz veins are controlled by faults with different directions��which occur mainly in intrusive bodies such as alkali- feldspar granite and hornblende- andesite�� The present study shows that the mineralization can be divided into four metallogenic stages: quartz- adularia-calcite phase��quartz-calcite phases �� and �ڣ�and calcite phase�� The study of fluid inclusions indicates there developed gas-liquid two-phase fluid inclusions from quartz in the main mineralization in studied area��of which the homogenization temperature ranges from129. 8�� to 236. 5�棬while the peak value between 190�� to 220�棬the salinity w (NaCl) varies from 0. 83% to 1. 98%�� The ore-forming fluid is a kind of NaCl- H2O solution at low- temperature and low- salinity�� The results of hydrogen and oxygen isotopes reveal that the ore- forming fluid is a kind of mixed fluid consisting of atmospheric precipitation and magmatic hydrother- mal�� The Wufeng gold deposit is epithermal in origin�� |
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Keywords��
geological characteristics
fluid inclusion
Wufeng gold deposit
Yanbian
genesis
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Received Revised Online: |
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