摘要
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 050m,宽450m,厚202～1 071m,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。
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, bismutite 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 202-1 071 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.
出处
《地质找矿论丛》
CAS
CSCD
2011年第4期378-384,共7页
Contributions to Geology and Mineral Resources Research
基金
武警黄金部队地质项目"河南省栾川县南坪矿区石瑶沟矿段钼金矿详查"(编号:200904020601)资助
关键词
石瑶沟钼矿
花岗斑岩
矿床地质特征
找矿方向
河南省
Shiyaoguo molybdenum deposit
geological characteristics of the deposit
prospecting direction
Henan province
