陕西龙头沟金矿地质特征及找矿方向

龙头沟金矿是近年发现的构造蚀变岩型金矿，产于泥盆系砂岩中，成因类型为受构造控制的中温岩浆热液矿床。在介绍区域地质特征的基础上，总结与成矿有关的主要控矿条件，指出矿体主要受近EW向断裂控制，断裂倾向与地层相反，并且围岩岩性、蚀变强弱和矿体产出标高均对矿体的形态和品位有不同程度的影响。结合近年外围工作进展，提出本地区今后找矿勘查工作应围绕走向剪切断裂、区内矿化蚀变带及外围化探异常开展，同时对背斜南翼开展找矿勘查工作。

Geological Characteristics and Prospecting Direction of Longtougou Gold Deposit in Shaanxi Province

Longtougou gold deposit which is a tectonic-altered rock type occurred in the east section ot soum Qinling orogenic belt, was found in recent years from the Devonian sandstone.It is mesothermal magmatic deposit controlled by tectonic.In the light of the geological characteristics of the deposit and main ore-controlling conditions, we hypothesized that the main orebodies are controlled by nearly east-west fracture, with its tendency in contrast to that of Devonian sandstone.The deposit morphology and quality are variably controlled by the lithology of surrounding rock, alteration intensity and occurrence elevations.Combined with peripheral progress in recent years, we suggested that future work of ore exploration should be performed around the shear fracture structure, mineralized alteration zone in the area and the periphery of geochemical anomalies, as well as the anticline ore prospecting work in the south.