【作者】 李庆康；

【导师】 李胜荣；

【作者基本信息】 中国地质大学（北京） ， 矿物学、岩石学、矿床学， 2008， 硕士

【摘要】 河南省嵩县前河金矿位于华北克拉通南缘金-多金属矿产丰富的熊耳山地区。区域地层由太古界太华群变质岩基底和中元古界熊耳群火山岩及新生界盖层组成;中元古代熊耳群安山岩和燕山期花岗质侵入岩、火山岩广泛发育;近东西向和北北东向的区域断裂控制着金等矿床的产出。石英的热释光（热发光）特征作为石英的矿物学标型,是金矿研究的一个重要方面。本课题对构造破碎带蚀变岩型金矿床矿体及围岩中石英进行热发光测试,并对所得数据进行定量分析,利用热发光垂直纵投影图,结合金品位垂直纵投影图,找寻在此类金矿床中石英的热发光与矿体分布的空间关系,并进一步研究本区石英热发光的发光机理。在前河金矿四号带成矿期构造破碎带中采集石英样品进行热释光测试分析,根据不同发光峰类型分类测试数据,进行矿物学填图,并与金品位垂直等值线图做对比,之后分析了石英的微量元素和流体包裹体成分特征。得到结论:（1）石英热释光峰强高值区与主矿化体的侧伏趋势一致;较低的高值线在200m标高80勘探线和84勘探线两处向下延伸,预示深部再现其高值的可能性。（2）石英热发光峰强与微量元素含量呈正相关关系。石英280³20℃发光峰与Al³⁺-O-空穴心有关,240-245℃发光峰与电子心Ti³⁺-M⁺有关,这是本区石英热发光特征的特殊性。（3）石英流包裹体的液相成分主要为Cl^-、SO₄^2-、Na⁺、Ca²⁺,少量F^-、K⁺、Mg²⁺;气相成分主要为CH₄、H₂O、C₂H₆、H₂S、CO₂,少量N₂和Ar。属于NaCl-H₂O体系,主成矿流体来源为大气水。石英包裹体丰度与其热发光峰强呈正相关关系。（4）由碳酸盐热发光特征得出的深部矿体预测位置与石英热发光预测结果相符。综上所述,通过对石英热发光特征,石英微量元素,石英流体包裹体和碳酸盐热发光特征的分析研究,对前河金矿的石英矿物学特征及其深部预测工作做了初步的尝试,得出了有益的结论。更多还原

【Abstract】 The Qianhe gold deposits lied in Songxian, Henan Province, located Xiong’erShan area, by the south edge of North China Craton holding abundant gold and other metal deposits. The strata are composed of Archeozoic Taihua group, middle-proterozoic Xiong’er group and Cenozoic group. The Proterozoic volcanic and Yanshan granites are well developed in Xiong’erShan area; and nearly E-W and NNE trending regional fractures greatly dominated the gold deposits.As a character of mineralogy, the thermoluminescence of quartz is a important part in the study of gold mine. In this task, the thermoluminescence of quartzs had been tested in both the deposite and the wall rock, the deposi belong to the fracture-altered rock type. And we looked for the interspace connection by the thermoluminescence of quartzs and the distributing of deposits by the plumb projection maps made of these data, and made a study in the mechanism of thermoluminescence.The quartzs samples was collected from the zone-4 of Qianhe deposite in the fracture-altered rock. We made mineralogy maps based on the different types of the thermoluminescence, contrasted them with the isoline maps of gold grade. We also analysed the microelement and the the composition of fluid inclusions of quartzs. Conclusion: （1）The high apices areas of the thermoluminescence and the main deposites have the same current in direction. The high apices lines at the 20080 and 20084 areas have a direction to deep side. Made the reappearance of the high apices areas in deep feasible. （2）The apices of the thermoluminescence of quartzs have a positive correlativity with the content of microelement of quartz. The cavity center Al3+-O- of quartz lie on the apices of thermoluminescence from 280℃to 320℃,the electron center Ti³⁺-M⁺ lie on the apices of thermoluminescence from 240℃to 245℃.These are the characters of the quartzs of Qianhe deposites. （3）The liquid compositions of fluid inclusions of quartzs are Cl^-、SO₄^2-、Na⁺、Ca²⁺,and less F^-、K⁺、Mg²⁺; the gas compositions of fluid inclusions of quartzs are CH4、H2O、C2H6、H₂S、CO₂,and less N₂ and Ar. It belongs to NaCl-H₂O system, the main source of the mineralization fluid come from the atmosphere water. The consistency of inclusion of quartzs have a positive correlativity with the apices of the thermoluminescence of quartzs. （4）The thermoluminescence of carbonates have the same result with the thermoluminescence of quartzs in forecast of the places of deposites in deep side.To sum up, we have had a abecedarian study on the mineralogical characters of quartz of Qianhe gold deposites by the analyses of the thermoluminescence of quartzs, the microelement of quartzs, the composition of fluid inclusions of quartzs, and the thermoluminescence of carbonate. We also made some usefull conclusions at last.更多还原