摘要
灵山沟金矿床是招掖金矿带上的一个重要金矿床。文章通过搜集已有资料和综合近年来最新的研究成果,对该矿床的地质背景、矿体及矿石特征、赋存状态、围岩蚀变、同位素特征、包裹体特征、矿床成因等方面进行了系统的研究和分析。认为该金矿床受北东向断裂构造控制,具典型的中温热液蚀变特征,岩浆活动具多期次,成矿阶段温度变化不大,成矿流体为低盐度的H2O-NaCl-CO2-H2S体系,硫来源于深源地幔,成矿流体来源以岩浆水为主,混入不同程度的大气降水和变质水,矿床成因为中温热液脉状金矿床,属中成造山型金矿。
Lingshangou gold deposit is an important gold deposit in Zhaoyuan - Laizhou gold mineralized zone. On the base of data collection and integrated analysis of recent research achievements, the authors analyze systematically the geological background, characteristics of ore body and ore, gold occurrence phase, country rock alteration, isotopic characteristics, fluid inclusion, and depos- it genesis. It is concluded that Lingshangou gold deposit is medium temperature hydrothermal vein type gold deposit, it belongs to me- sozonal orogenic gold deposit. The gold orebody is controlled by NE - trendingfauh structures, the deposit has typical alteration charac- teristics of medium temperature hydrothermal deposit. Multi - stages of magmatic intrusions occur in the deposit area. The ore - forming temperature does not change too much during mineralization process. The ore -forming fluid has low salinity with H2O -NaCl -CO2 - HES system, the sulfur is originated from deep mantle. The ore -forming fluid is dominated from the magmatic hydrothermal, mixed with precipitated water and metamorphic fluid.
出处
《矿产勘查》
2013年第1期33-42,共10页
Mineral Exploration
关键词
胶东
灵山沟金矿床
地质特征
围岩蚀变成矿期次矿床成因
Lingshangou gold deposit
geological characteristics
country rock alteration
mineralization phases
deposit genesis
