甘肃省金塔县黑石山地区氟元素地球化学特征及找矿前景分析

Analysis of fluorine geochemistry and prospecting potential in Heishishan area,Jinta County,Gansu Province

甘肃省金塔县黑石山地区处在北山造山带,该带经过多期次的构造作用和岩浆活动,形成了许多重要的Au、Cu、Pb、Mn、Ag等金属矿产和萤石、重晶石等非金属矿产。通过1∶5万土壤地球化学测量圈定了以氟为主的异常,利用1∶1万土壤测量、槽探和钻探工程等找矿手段发现了萤石矿体,本文总结了研究区萤石矿体的特征及找矿标志,为该区寻找同类型萤石矿提供依据。

The studied Heishishan area in Jinta County,Gansu Province,located in the northern mountains orogenic belt,has undergone many stages of tectonic and magmatic activities,resulting in the formation of several important metallic minerals such as Au,Cu,Pb,Mn,Ag,as well asnon-metallic minerals such as fluorite and barite.Fluorine-dominated anomalies were delineated by 1∶50000 soil geochemical survey.Furthermore,fluorite ore bodies were found in the study area by conducting 1∶10,000 soil geochemistry surveys,trenching and drilling.This paper summarized the characteristics and prospecting criteria of fluorite orebody in the study area,which provided a basis for prospecting the similar types of fluorite ore in the area.