广东省典型铜矿床区域地球化学异常特征

Regional geochemical anomaly characteristics of typical copper deposits in Guangdong Province

广东省铜矿床具产地分散、类型多样、储量集中的特点。以八个典型铜矿床为例,探讨铜异常及其元素组合特征,得出:1铜富集部位对已知矿的反映较好;2规模相似的不同类型铜矿床,其铜异常面积相近,但铜平均含量差异较大;3斑岩型铜矿的Cu、Mo、Sb组合,岩浆热液型、矽卡岩型、复成因型铜矿的Cu、Pb、Zn、Ag、Cd、Bi、Mo、W、Sn、Mn组合,火山岩型铜矿的Cu、Pb、Zn、Cd、Ag、As组合较稳定。这些结论为进一步了解广东省铜矿的成矿规律及开展地质勘查、地质评价工作提供了一定的科学依据。

Copper deposits in Guangdong Province are characterized by dispersion of occurrences,varied types and concentrated reserves. With eight typical copper deposits as examples,the authors investigated copper anomalies and element combination characteristics,and have reached the following conclusions： Copper enrichment position can better reflect the known ore deposit; Different types of copper deposits with similar sizes have similar copper anomaly areas,but their copper average values are different considerably; Cu,Mo,Sb combination of porphyry copper deposits,Cu,Pb,Zn,Ag,Cd,Bi,Mo,W,Sn,Mn combination of multiple genetic deposits and Cu,Pb,Zn,Cd,Ag,As combination of volcanic rock type copper deposits are fairly stable. These results provide some scientific basis for understanding of copper metallogenic regularity and carrying out geological survey and geological evaluation in Guangdong Province.