The Shiyaogou deposit is a large molybdenum deposit newly discovered in the East Qinling molybdenum belt. In the mineralization area are developed Au, Pb, Mo, Ag anomalies and scheelite, bis-mutite and native gold heavy mineral anomalies in river sediments. Mo mineralization emplaces at intersection of the EW-trending Machaoying fault and the NE-trending Jiaoyuan fault. Granoporphyry and the host rock-Xionger group with Mo mineralization are all intersected to depth. In plan the Mo mineralization body is elliptical pods with length of 1 050 m, width of 450 m and thickness of 202~l 071 m. The grade is w(Mo)=0. 030%～1. 30%, averagely 0. 06%. Areal wallrock alteration occurs in zonation. Silicifica-tion and feldsparization are closely related to mineralization. Genetically, the Shiyaogou deposit is porphyry type Mo deposit. Further exploration should be targeted to intersections of EW-trending and NE-trending fault in the area.%石瑶沟钼矿床是东秦岭地区新发现的一个大型钼矿床,在钼矿化范围内具有水系沉积物的Au,Pb,Mo,Ag异常和重砂的白钨矿、泡铋矿和自然金异常；钼矿化产于近EW向马超营断裂带和NE向石瑶沟断裂带交汇处.矿区深部隐伏的花岗斑岩和围岩熊耳群都具有钼矿化；钼矿化体在平面上呈近似椭圆形的扁豆体,矿体长1 050 m,宽450 m,厚202～1 071 m,矿石品位w(Mo)=0.030％～1.30％,平均0.06％；围岩蚀变呈面状分布,具有分带现象,其中硅化、钾长石化与钼矿化关系密切；石瑶沟钼矿的成因类型为斑岩型矿床.文章总结了钼矿床的找矿标志,认为近EW向区域断裂带与NE向断裂构造交汇部位是寻找斑岩型钼矿的有利部位.
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