广西博白地区地球化学特征及其指示意义

Geochemical characteristics and instruction significance of Bobai area in Guangxi province

广西博白地区位于钦杭成矿带西段,处于有利成矿位置,通过1:50 000水系沉积物测量和1:10 000土壤异常查证结果表明,区内以钨、锡富集为特征,主要受博白-岑溪断裂带控制,沿(斑状)堇青黑云二长花岗岩与志留系接触带展布,为含矿热液沿不同岩性接触带充填和交代引起,显示出较好的钨、锡找矿前景。

Bobai area,located in the western of Qinhang Metallogenic belt in Guangxi province,is conductive to formation of the ore.According to the stream sediment survey with 1∶50 000 scale and soil geochemical survey with 1∶1million scale,the area is characterized by enrichment of Tungsten and tin,which is distribution along with the contact zone between the（porphyritic）cordierite biotite monzonitic granite and the silurian system.It was mainly controlled by the Babai-Cenxi fault zone and formed by the filling and replacement action of the ore-bearing hydrothermal fluid along the contact zone between rocks of different lithologic charac-ters.It shows good ore search prospects for tungsten and tin.