广西龙湾铅锌矿床已开采约20年,随着近年来攻深找盲工作的推进,2017年,人们在矿床内开展了深部找矿普查工作.本文根据普查取得的成果,结合矿区成矿地质特征,总结成矿富集规律,分析找矿前景,这对进一步开展深部找矿工作具有重要的指导意义.

为分析栗木矿田水溪庙锡多金属矿床地质特征,结合地质勘查成果,对水溪庙矿区从地层、构造、岩浆岩、矿床地质特征进行分析,并对矿床成因进行了探讨.从矿化的分带性和蚀变特点推断矿床成因为岩浆结晶(或演化)晚期分离的岩浆气化—热液经自交代作用形成,属同源、同期岩浆不同演化阶段的产物.总结该区找矿标志,为找矿工作提供参考.

Laobao Pb-Zn deposit in Sanjiang,Guangxi is the first huge Yangtzi type Pb-Zn deposit that is discovered in Guangxi.The ore bodies occur in lit-par-lit structure between silicalite of Laobao group and dolomite of Doushantuo group of upper Sinian system,and they fold synchronously with strata.The composition of the ores is simple.Metal minerals include galena,sphalerite(major) and pyrite(minor);nonmetal minerals include dolomite,quartz,barite and sericite.Wall rock alteration includes silicification and carbonatation.The mineralization is obviously controlled by the synsedimentary faults in Sanjiang,silicalite of Sinian Laobao Formation,dolomite of Sinian Doushantuo Formation,and neritic-bathyal block reducing environment.

Limestone is an important building material,but there are a series of probliems in the process of development and utilization of limestone mine,such as degree of safeguard of resource is low、 great potential of mine safety、 the destruction of the problems of mining geological environment and so on,they affect the reasonable development of limestone mine and protection of the geologic environment of mines directly.Aceording to geological environment condition of an opencast limestone ore mine,combined with the-spot detailed investigation of the mine geological environment problems and impact assessment,the author proposed relevant control methods,and provided some theoretical basis for the reasonable development limestone ore resources and mine geological environment protection in this paper.