北山地区矽卡岩型铜矿元素表生活动性规律——以辉铜山铜矿为例

元素表生活动性规律研究是制定地球化学勘查方法技术、开展地球化学找矿工作的前提和基础。以北山地区辉铜山铜矿为例，系统研究了元素的表生活动特性。结果表明：在不同母岩形成的土壤中，Cu、Mo、Pb、Zn、Au、Ag、As、Bi、Ba、Sr等微量元素富集作用存在差异；与粗粒级相比较，细粒级中元素的富集作用更加明显；随着样点到矿体之间距离的增加，粗粒级土壤样品的Cu、Mo元素含量降低，而Ba、Sr元素含量略有升高。土壤中常量元素含量特征表明：粗粒级与细粒级的物质组成、化学成分存在明显差异，粗粒级更接近于母岩。微量元素的富集作用与黏土矿物含量呈正比，与主要造岩矿物含量呈反比。以上述试验结果为基础，采用－4～＋40目粗粒级为采样介质，有效圈出了辉铜山铜矿元素正异常和负异常，为该地区的找矿靶区优选提供了依据。

Supergene Activity Discipline of Elements from Skarn Copper Mine in Beishan Region:Example from Huitongshan Copper Mine

The study on supergene activity discipline of elements is precedent and basic for establishing method and technology of geochemical exploration.The supergene activities of elements from parent rocks and soils in Huitongshan copper mine of the Beishan region are studied,which includes the variation of elements' contents and hereditability between soils and rocks.It can be concluded that some trace elements as Cu,Mo,Pb,Zn,Au,Ag,As,Bi,Ba and Sr show distinctive enrichment characteristics in soils derived from ...