广西珊瑚钨锡矿床围岩蚀变及其矿化关系研究

Discussion on the relationships between surrounding rock alterations and mineralization of Shanhu Tungsten-Tin Deposit

珊瑚钨锡矿是南岭钨锡成矿带上的典型矿床之一。开展矿床围岩蚀变研究有利于了解矿床成因和成矿机理,并进一步指导外围和深部找矿。本文通过野外地质调查、岩矿鉴定、X射线衍射分析等方法,揭示珊瑚矿区长营岭钨锡矿床围岩蚀变特征及其与钨锡矿化的关系。研究结果表明:珊瑚钨锡矿床围岩蚀变种类多,蚀变作用显示多期多阶段特征,且与矿床矿化期次存在一定关联性。研究认为电气石化的围岩蚀变类型最具有找矿指示意义。

Shanhu Tungsten-Tin Deposit is one of the typical deposits in Nanling Tungsten-Tin Metallogenic Belt.The study on the alteration of the surrounding rock of the deposit is helpful to understand the genesis and metallogenic mechanism of the deposit,and to further guide the prospecting in the periphery and depth.By means of field geological survey,rock ore appraisal and X-ray diffraction,this paper reveals the alteration characteristics of surrounding rock and its relationship with tungsten-tin mineralization in Changyingling Tungsten-Tin Deposit in Shanhu Mining Area.The study results show that the alteration types of the host rock around the deposit are diverse,and the alterationprocess shows multi-phase and muili-stage characteristics,and there s a certain correlation between the ateration period and the mineralization period of thedeposit.The study believes that the alteration type of the electrification rock is the most significant for mineral exploration.