新疆富蕴县克乃特糜棱岩带铜金矿化流体特征

卫晓锋; 阴元军; 刘泽群; 杨凯; 徐九华; 程志龙; 丁汝褔

新疆富蕴县克乃特糜棱岩带铜金矿化流体特征

1.
北京矿产地质研究院, 北京 100012
2.
北京市地质矿产勘查开发总公司, 北京 100000
3.
北京科技大学资源工程系, 北京 100083

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出版历程
- 收稿日期: 2015-03-09
- 修回日期: 2015-05-03
- 发布日期: 2015-09-04

Mineralized Fluids Characteristics of Cu-Au Ore District in Kenaite Mylonite Belt of Fuyun, Xinjiang

1.
Beijing Institute of Geology for Mineral Resources, Beijing 100012, China
2.
Beijing Geological and Mineral Exploration and Development Co.Ltd, Beijing 100000, China
3.
Resource Engineering Department, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 研究区位于新疆麦兹盆地东南部的可可塔勒铅锌成矿带。对与铜金矿化关系密切的石英脉中流体包裹体研究发现:其均一温度集中在160～200℃, 盐度为0.18%～8.41%, 流体密度为0.79～1.04g/cm³, 主要成分为H₂O、CO₂, 少量CH₄, 流体来源于变质流体, 混入少量大气降水。铜金矿化期成矿流体为中低温、中低盐度、中低密度、富CO₂的变质流体, 与洋陆俯冲体制下弧后盆地的VMS型铅锌矿化期的中低温、低盐度、低密度、几乎不含CO₂的海水流体明显不同。显示该地区存在晚期与造山-变质热液作用有关的成矿事件, 对本区的找矿评价具有启示意义。
- 成矿流体 /
- 铜金矿化 /
- 麦兹盆地
Abstract: The study area is located in Keketale Pb-Zn metallogenic belt in southeast of Maizi basin, Xinjiang. Studies on aqueous fluid inclusions in the quartz veins related to Cu-Au mineralization demonstrate that the total homogenization temperatures are concentrated in the range of 160-200 ℃, while the salinity is 0.18%-8.41%, the fluid density is 0.79-1.04 g/cm³, and the fluid inclusions components are mainly H₂O and CO₂, with minor CH₄. The fluids were derived from metamorphic fluids and mixed with a little meteoric water. The fluids of Cu-Au mineralization period were metamorphic fluids with medium-low temperatures, medium-low salinities, medium-low density and CO₂ enrichment. The metallogenic fluids are different from the marine water fluids of VMS Pb-Zn mineralization period from the ocean-continental subduction back-arc basin, whose features are medium-low temperatures, low salinities, low density and hardly contain any CO₂. It shows that this region did exist later-fperiod metallogenic events related to orogenic-metamorphic hydrothermal process, which has enlightening significance for prospecting evaluation in this area.
- metallogenic fluids /
- Cu-Au mineralization /
- Maizi basin

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新疆富蕴县克乃特糜棱岩带铜金矿化流体特征

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Mineralized Fluids Characteristics of Cu-Au Ore District in Kenaite Mylonite Belt of Fuyun, Xinjiang

期刊类型引用(8)

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出版历程

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