摘要
老湾金矿带是桐柏-大别山(北坡)金银成矿带的重要组成部分,位于金银成矿带的南亚带。在对该成矿带成矿地质背景和原生地球化学异常分析研究的基础上,采用矿体前缘元素As,Sb和尾部元素Mo,Pb(Ni)的累加比值: (As+Sb) /(Mo×10+Pb)和(As+Sb) /(Mo×10+Ni),确立了该矿带的累加指数评价指标。利用累加指数结合原生地球化学异常元素组合,对该矿带地表及深部的含矿性进行预测评价,扩大了原矿体规模且发现了新矿体。
The Laowan gold mineralized belt is an important part and locates in the southern part of the Tongbai-Dabieshan Au-Ag metallogenetic district. Based on analyzing geological background and protogenic geochemical anomalies,the evaluating indicators were established with additive (As+Sb)/(Mo×10+Pb) and (As+Sb)/(Mo×10+Ni)ratios. Utilizing additive index and element assemblages with protogenetic geochemical anomalies,the surficial and deep ore-bearing potentials were evaluated of the ore belt, the scale of orebodies was extendeded and new orebodies were found.
出处
《华南地质与矿产》
CAS
2005年第1期13-19,共7页
Geology and Mineral Resources of South China
基金
基金项目:原地质矿产部"八五"原生晕研究项目 (88 -( 5 ) -03).
关键词
老湾金矿带
地球化学异常
浓度分级
累加指数
含矿性评价
Laowan gold minerealized belt
geochemical anomaly
concentration grading
additive index
evaluation of ore-bearing potential
