胶东白垩纪金矿的地球化学特征分析

Geochemical characteristics of Cretaceous gold deposits in Jiaodong

本文以胶东地区早白垩纪为研究对象,对比分析了胶东不同地区金矿同时代矿物的地球化学特征。把研究区内早白垩世晚期(120Ma^110Ma)不同种类的矿物进行地球化学对比分析。两者地球化学特征有明显差异。成矿地质矿物中钾含量比非成矿的地质矿物钾含量低,而且比非成矿地质矿物更加亏损重稀土元素。通过对比地球化学特征揭示了两类矿物的特征差异,对该区找矿具有指导意义。

Taking the early Cretaceous in Jiaodong area as the research object,this paper makes a comparative analysis of the geochemical characteristics of the same age minerals of gold deposits in different areas of Jiaodong.Different kinds of minerals from the late Early Cretaceous(120MA^110MA)in the study area were compared and analyzed.There are obvious differences between the two geochemical characteristics.The potassium content of ore-forming geological minerals is lower than that of non ore-forming geological minerals,and the heavy rare earth elements are more deficient than that of non oreforming geological minerals.The differences between the two kinds of minerals are revealed by comparing the geochemical characteristics,which is of guiding significance for the prospecting in this area.