陕西凤县水晶沟铅锌矿地质特征及找矿前景探讨

Discussion on Geological Characteristics and Prospecting Prospect of Shuijinggou Lead-Zinc Mine in Fengxian County,Shaanxi Province

水晶沟铅锌矿位于凤太矿田西部的银洞山背斜核部古道岭组灰岩中,矿体受NWW向断层控制,矿体主要呈层状、似层状产出。矿石主要为硅化灰岩,金属矿物以闪锌矿、方铅矿,其次为黄铁矿、黄铜矿、磁黄铁矿等。脉石矿物主要为方解石、石英、白云石,围岩蚀变主要有褪色化、绢云母化。随着矿山近年来开采深度的加大,发现深部矿体有变富变厚趋势,在矿体地质特征研究的基础上,分析水晶沟铅锌矿体特征和矿化富集规律,探讨找矿前景。

Shuijinggou lead-zinc mine is located in the limestone of the ancient mountain group of the anticlinal core of yindong mountain in the west of fengtai ore field.The ore body is controlled by NWW fault, mainly produced in layer-like and layer-like form, the ore is mainly silicated limestone. The metallic minerals are sphalerite and galena, followed by pyrite, chalcopyrite and magnetite,etc. The gangue minerals are mainly calcite, quartz and dolomite, the alteration of surrounding rock mainly includes bleaching and sericitization. With the increase of mining depth in recent years, it is found that the deep ore body has the tendency of becoming richer and thicker. Based on the study of geological features of the ore body, this paper analyzes the characteristics of the lead-zinc ore body in Shuijingou and the rule of mineralization and enrichment, and discusses the ore-searching prospect.