河南省新县浒湾钨矿地质特征及找矿标志

浒湾钨矿位于河南省新县浒湾乡，地处秦岭—大别造山带东段，是一个以变质和变形为主体的陆内造山带，基本构造格架表现为透镜状弱应变域（造山地形地体）和线状强应变带（聚合边界断裂）相间排列。详细分析了矿区成矿岩体地质特征、矿床地质特征，讨论了成矿规律，并总结了找矿标志。结果表明：①浒湾钨矿属高温热液充填为主的石英脉型黑钨矿床，主要受构造裂隙控制，黑钨矿化石英脉主要赋存在含榴混合花岗岩体或片麻状花岗岩的构造裂隙带内；②黑钨矿体产于隐伏花岗岩体外接触带的密集裂隙中，形成微—细（长石）石英脉型黑钨矿床，高温气水热液运移到岩体上部围岩构造裂隙中则形成细—大石英脉型黑钨矿床；③矿区找矿标志主要为近EW向、NW—SE向断裂构造、硅化、钾长石化、萤石矿化、地表黑褐色褐铁矿、黄钾铁钒（铅钒）及被膜状孔雀石、铜兰等蚀变，以W、Mo为主的多组分综合异常。

Geological Characteristics and Prospecting Indicators of Huwan Tungsten Deposit in Xinxian County,Henan Province

Huwan Tungsten Deposit is located in Huwan Town in Xinxian County,Henan Province,it is distributed in the eastern part of Qinling Dabie orogenic belt,the mining area is an intracontinental orogenic belt dominated by metamorphism and deformation.Its basic tectonic framework is composed of lenticular weak strain regions (orogenic terrain) and linear strong strain zones (convergent boundary faults).The geological characteristics of metallogenic rock mass and deposit are analyzed in detail,the metallogenic regularities is discussed,besides that,the prospecting indicators are summarized.The results show that:①Huwan Tungsten Deposit is a quartz vein wolframite deposit with high temperature hydrothermal filling,it is mainly controlled by structural fissures,the wolframite mineralized quartz veins mainly occur in the structural fissure zone of garnet bearing mixed granite or gneissic granite;②wolframite ore bodies occur in dense fissures in the outer contact zone of concealed granite bodies and form micro fine (feldspar) quartz vein wolframite deposits,while fine large quartz vein wolframite deposits are formed when high temperature gas hydrothermal fluid migrates into the structural fissures of surrounding rocks in the upper part of the rock mass;③the prospecting indicators in the mining area are mainly for EW and NW SE faults in the area,silicification,potassium feldspar,fluorite mineralization,surface black brown limonite,pyrokalium iron vanadium (lead vanadium) and alterations of coated malachite and tonglan,and comprehensive anomalies with W and Mo as the main components.