摘要
通过对北山地区金窝子矿区石英脉型金矿和210矿区蚀变岩型金矿中流体包裹体的岩相学和显微测温研究,查明了不同金矿类型中流体包裹体的特征和成矿温度的变化特征。金窝子金矿床中流体包裹体分为Ⅰ型和Ⅱ型两种：即含CO2三相包裹体和气液两相包裹体。金窝子矿区的均一温度介于100480℃之间,峰值分布在200320℃,均一温度平均值为257℃,峰形呈近似正态曲线分布,属中-低温成矿,且具一次性成矿和基本连续演变特点;210矿区均一温度分布主要介于160400℃,峰值分布在280360℃,平均值为280℃,呈右偏型曲线,可能存在着多期成矿,一期成矿流体温度较低（200280℃）,另一期成矿流体温度较高（280360℃）。结合本区成矿规律预测,金窝子矿区4号脉在P-1线北及四中段（1 590 m）深部仍可探矿,工程验证已探到工业矿体。
The fluid inclusion petrography and homogenization temperature of quartz vein type Au ore（Jinwozi area） and the altered cataclastic rock type Au ore（area 210） show different characteristics of the fluid inclusions and variation of the ore-forming temperatures.The fluid inclusions can be divided into I and II types,i.e.the 3-phased CO2 fluid inclusion and the 2-phased gas and fluid one.The homogenization temperature of Au ore（Jinwozi area） is in range of 100-480℃.The curve is in positive form with the peak values concentrated at 200-320℃ and average of 257℃ showing that it is a mesothermal-epithermal Au deposit characterized by a single and continuous ore-forming stage;the latter（area 210） in range of 160-400℃ with the peak values concentrated at 280-360℃ and average of 280℃ and a right decline curve pattern characterized by two ore-forming stages of which one is in low temperature（200-280℃）and the other in relative high temperature（280-360℃）.According to the results Au ore is predicted to the 4th level（1 590 m） at line P-1 and the drilling hit industrial ore body.
出处
《地质找矿论丛》
CAS
CSCD
2009年第4期276-281,共6页
Contributions to Geology and Mineral Resources Research
基金
国家自然科学基金青年科学基金项目(40902026)
中国地质大学(武汉)优秀青年教师资助计划项目(CUGQNL0735)联合资助
