海南抱伦金矿含金石英脉流体包裹体特征及其意义

王朝文; 洪汉烈; 钟增球; 张小文; 王婧; 李方林; 徐亚军

doi:10.3799/dqkx.2011.107

Volume 36 Issue 6

Jun. 2011

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WANG Chao-wen, HONG Han-lie, ZHONG Zeng-qiu, ZHANG Xiao-wen, WANG Jin, LI Fang-lin, XU Ya-jun, 2011. The Characteristics of Fluid Inclusions in Gold-Bearing Quartze and Their Source Indicator of Baolun Gold Deposit, Hainan. Earth Science, 36(6): 1009-1020. doi: 10.3799/dqkx.2011.107

Citation:

WANG Chao-wen, HONG Han-lie, ZHONG Zeng-qiu, ZHANG Xiao-wen, WANG Jin, LI Fang-lin, XU Ya-jun, 2011. The Characteristics of Fluid Inclusions in Gold-Bearing Quartze and Their Source Indicator of Baolun Gold Deposit, Hainan. Earth Science, 36(6): 1009-1020. doi: 10.3799/dqkx.2011.107

Citation:

WANG Chao-wen, HONG Han-lie, ZHONG Zeng-qiu, ZHANG Xiao-wen, WANG Jin, LI Fang-lin, XU Ya-jun, 2011. The Characteristics of Fluid Inclusions in Gold-Bearing Quartze and Their Source Indicator of Baolun Gold Deposit, Hainan. Earth Science, 36(6): 1009-1020. doi: 10.3799/dqkx.2011.107

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The Characteristics of Fluid Inclusions in Gold-Bearing Quartze and Their Source Indicator of Baolun Gold Deposit, Hainan

doi: 10.3799/dqkx.2011.107

1.
Faulty of Earth Sciences, China University of Geosciences, Wuhan 430074, China
2.
Dawei Company of Mine Resources Development in Hainan, Haikou 570206, China

Received Date: 2011-06-11
Available Online: 2021-11-10
Publish Date: 2011-06-15

Abstract

Abstract

To better understand the formation of Baolun gold deposit and provide information for further exploration, fluid inclusions of quartz in gold-bearing quartz veins were investigated using Raman method. Our results showed that there were mainly two types of inclusion, i. e., CO₂-H₂O and H₂O, respectively. The former contained mainly CO₂, with minor CH₄, formed in the mineralization stage of gold-bearing quartz veins and gold multi-metal sulfide veins. These inclusions occurred in isolation or group with varied volume, and were the primary inclusion, exhibiting the characteristics of immiscible fluid inclusion. The later occurred mainly in quantz-calcite veins, containing pure H₂O. The results of micro-thermometric measurement showed that the homogenization temperatures of mineralization periods Ⅰ and Ⅱ were 248-376℃ and 213-320℃, respectively. The homogenization temperature of the post-mineralization period fluid inclusion was 140-244℃. Ore-forming fluid was the CO₂-H₂O-NaCl hydrothermal system, mineralization periods Ⅰ and Ⅱ were dominantly mid-low salinities (0.8%-16.05% NaCl equiv) and rich in volatile component (density 0.21-0.85g/cm³). Temperature, salinity, and CO₂ concentration all decreased in the late mineralization period. The calcite δ¹³C(PBD, ‰) and δ¹⁸O(PBD, ‰) values of the late stage veins were -6.86 to -13.14 and -10.64 to -14.51, respectively, indicating a magma origin in combination with fluid-rock reactions and organic mixing from the country rocks during the migration and transportation processes. Immiscibility due to water/rock reactions and decrease in fluid temperature and pressure was probably responsible for the gold deposition.
- gold,
- fluid inclusions,
- Raman,
- quartz vein,
- gold deposit

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References(60)

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