论文部分内容阅读
杆洞铜矿床赋存于广西桂北最老地层─—中元古界四堡群中，矿体呈脉状产于杆洞花岗斑岩体及其外接触带围岩中，受ＮＮＥ向断裂裂隙构造控制明显，矿石具细脉浸染状、块状构造，矿石平均品位Ｃｕ０．７８５—１．７４８％，矿石矿物主要为黄铜矿、斑铜矿、辉铜矿、黄铁矿，局部伴生方铅矿、闪锌矿，脉石矿物有石英、绢云母、绿泥石、黑云母，围岩蚀变主要为石英绢云母化与绿泥石化、黄铁矿化、硅化，据此认为属岩浆热液交代充填脉型矿床。
The Pontong copper deposit occurs in the Si Bao Group, the oldest Proterozoic in the northern Guangxi, China. The ore body is vein-shaped in the surrounding rock of the Pangdong granite porphyry and its outer contact zone and is affected by NNE The structure control to the fracture fissures is obvious. The ore is disseminated with vein veins and massive structures. The average grade of the ore is Cu0.785-1.748%. The ore minerals are mainly chalcopyrite, bornite, chalcopyrite, pyrite, Local associated galena, sphalerite and gangue minerals include quartz, sericite, chlorite and biotite. The alteration of wall rocks is mainly quartz sericitization and chloritization, pyrite mineralization and silicification It is considered that magmatic hydrothermal fluid is used to fill vein-type deposits.