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胶东石家金矿床成矿流体特征及矿床成因
- 作者：
- 刘晓敏|于森|李金涛|李丽|丁文彪|薄军委
- 作者单位：
- 山东省第三地质矿产勘查院|山东省第三地质矿产勘查院|山东省第三地质矿产勘查院|山东省第三地质矿产勘查院|山东省第三地质矿产勘查院|山东省第三地质矿产勘查院&深部金矿探测大数据应用开发山东省工程研究中心
基金项目：
- 国家自然科学基金项目（41973048）；深部金矿探测大数据应用开发山东省工程研究中心开放课题（SDK202207）
详细信息：
- 作者简介：
- 刘晓敏（1987—），男，工程师，从事地质矿产勘查工作；E-mail:1052675636@qq.com
- 通讯作者：
- 于森（1987—），男，工程师，从事地质矿产勘查工作，E-mail:461609871@qq.com
- PDF下载
Characteristics of ore-forming fluids and genesis of Shijia Gold Deposit in Jiaodong
- English Author：
- No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province|No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province|No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province|No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province|No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province|No.3 Exploration Institute of Geology and Mineral Resources of Shandong Province&Shandong Province Engineering Research Center for Deep Gold Mine Detection Big Data Application Development
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
石家金矿床是位于栖蓬福成矿带北段的一个石英脉型金矿床，其成矿过程大致可以分为石英-黄铁矿阶段（Ⅰ）、金-石英-黄铁矿阶段（Ⅱ）、金-石英-多金属硫化物阶段（Ⅲ）、石英-碳酸盐阶段（Ⅳ）。成矿流体盐度为1.83 %～10.74 %，密度为0.61～0.90 g/cm3，属于低盐度、低密度流体；成矿温度275 ℃～325 ℃，成矿流体压力50～92 MPa，成矿深度1.67～3.07 km。综合特征揭示，该矿床为受花岗岩体穹隆上部的陡倾伸展断裂控制,幔源流体、岩浆流体和大气降水共同参与成矿的中温热液脉型金矿床。
关键词:
矿床成因；成矿温度；成矿深度；流体包裹体；石家金矿床；胶东
Abstract:
Shijia Gold Deposit is a quartz vein-type gold deposit located in the northern part of the Qixia-Penglai-Fushan Metallogenic Belt.The mineralization process can be broadly pided into 4 stages: quartz-pyrite stage (Ⅰ),gold-quartz-pyrite stage (Ⅱ),gold-quartz-polymetallic sulfide stage (Ⅲ),and quartz-carbonate stage (Ⅳ).The salinity of the ore-forming fluid ranges from 1.83 % to 10.74 %,with a density of 0.61-0.90 g/cm3,indicating low salinity and low-density fluids.The mineralization temperature is between 275 ℃ and 325 ℃,with fluid pressures ranging from 50 MPa to 92 MPa,and a mineralization depth of 1.67-3.07 km.The comprehensive characteristics reveal that this deposit is a medium-temperature hydrothermal vein-type gold deposit controlled by steeply dipping extensional faults in the upper part of a granite dome,with mantle-derived fluids,magmatic fluids,and meteoric water jointly contributing to the mineralization.
Keywords:
deposit genesis;mineralization temperature;mineralization depth;fluid inclusions;Shijia Gold Deposit;Jiaodong