广西姑婆山地区钨锡矿床地质特征及幔源物质参与成矿显示

Geological Characteristics of Tungsten-tin Deposits and the Indication of Mantle Material Participating the Tungsten-tin Mineralization in Guposhan Region, Guangxi

摘要: 姑婆山地区钨锡矿床位于南岭钨锡成矿带西南缘,是我国重要的钨锡产地。区内有新路、水岩坝和珊瑚三个钨锡矿田,矿床类型多样。其中,锡锌硫化物型、黑钨石英脉型和钨锡石英脉型矿床较为典型,区内钨锡成矿与壳幔混源型花岗岩体和断裂关系密切。笔者在前人工作基础上,总结了区内主要钨锡矿田和典型矿床地质特征,认为钨锡矿化在空间上具有一定的分带性;通过对区内构造和矿床的D-O同位素、He-Ar同位素、Pb同位素、S同位素及流体包裹体分析,认为深大断裂可能为幔源物质上侵提供了通道,钨锡成矿与岩浆作用关系密切,幔源物质参与了区内钨锡成矿。

Abstract: Tungsten-tin deposits in Guposhan region is located in the southwest edge of Nanling metallogenic belt where is an important tungsten-tin producing area.There are three tungsten-tin ore fields:Xinlu,Shuiyanba,and Shanhu.the deposits are numerous in genetic type,of which the typical ones are tin-zincsul fide type,quartz veined tungsten type,and tungsten-tin quartz vein type.The researchers have done lots of researches on the diagenesis and mineralization in this region and believe that the W-Sn mineralization has a close relation with the fracture and the crust-mantle mixed granite in Guposhan region.