摘要
博白县六林钼钨矿区位于广西博白-岑溪俯冲增生杂岩带(O-S)四级构造单元博白县油麻坡钨钼矿集区。在区域性物化探工作基础上,通过土壤剖面测量、水系沉积测量、激电中梯扫面、槽探及钻探工程等勘查工作,认为矿区控岩控矿构造为博白-岑溪深大断裂带,含矿层位主要为早泥盆世莲花山组(D_(1)l),推断矿区深部存在隐伏岩体。地球化学异常分析显示主成矿元素呈高温→中温→低温分带,矿石类型以石英脉型钨钼矿石、铅锌矿石、金银矿石为主,矿集区内W、Mo等成矿元素的成矿作用与燕山晚期酸性岩体的较晚一期侵入体(补体)关系更为密切。该区属于与燕山期花岗岩类有关赋存在泥盆系中的Sn-W-Mo-Cu-Pb-Zn-Au-Ag-Sb-Fe-硫铁矿-萤石矿床成矿亚系列,以“缺位找矿”理论为指导,认为六林矿区深部矽卡岩型钨钼矿床为今后找矿的突破方向。
The Liulin Mo-W deposit of Bobai County is located in the Youmapo W-Mo ore concentration area within the Bobai-Cenxi subduction-accretionary complex belt.On the basis of regional geophysical and geochemical exploration,soil profile survey,stream sediment survey,IP middle gradient scanning,trenching and drilling engineering,it is proposed that the ore-controlling structure of the mining area is the Bobai-Cenxi deep fault zone,and the ore-bearing stratum is mainly the Lianhuashan Formation(D_(1)l),and that there is concealed intrusion.Geochemical anomaly analysis shows that the main ore-forming elements are characterized by high temperature→medium temperature→low temperature zoning.The ore types are mainly quartz vein type tungsten-molybdenum ore,lead-zinc ore and gold-silver ore.The mineralization of W,Mo and other ore-forming elements is more closely related to the late Yanshanian acid intrusion(complement).This area belongs to Sn-W-Mo-Cu-Pb-Zn-Au-Ag-Sb-Fe-pyrite-fluorite metallogenic subseries which are related to Yanshanian granitoids and hosted in Devonian strata.According to the"absence prospecting"theory,it is inferred that the deep skarn type tungsten molybdenum deposit is the breakthrough direction for future prospecting in the Liulin Mining area.
作者
王功民
WANG Gong-Min(The Sixth Geological Team of Guangxi Zhuang Autonomous Region,Guigang 537100,Guangxi,China)
出处
《华南地质》
CAS
2020年第4期346-358,共13页
South China Geology
基金
广西壮族自治区找矿突破战略行动地质矿产勘查项目资助。
关键词
隐伏岩体
找矿方向
六林钼钨矿
油麻坡矿集区
广西博白县
concealed intrusion
prospecting direction
Liulin W-Mo deposit
Youmapo ore concentration area
Bobai County,Guangxi
