河南省洛宁县瓦川银矿地质特征与找矿方向

Geological characteristics and prospecting direction of the Wachuan silver deposit in Luoning County,Henan Province

瓦川银矿位于豫西崤山地区东部的银铅锌多金属成矿区,目前该成矿区已发现中河和老里湾两处大型银铅锌多金属矿床,具有较好的找矿潜力。本文在系统梳理瓦川银矿区地质特征的基础上,结合区域成矿条件,认为该矿床为构造蚀变岩型低温热液脉状银矿床,构造蚀变带、化探异常等是重要的找矿标志,并指出在F 1-Ⅰ银矿体深部、近EW向和SN向断裂构造上、银单元素异常区为下一步的找矿方向。

The Wachuan silver deposit located in the eastern part of the Xiaoshan area in western Henan Province,is a silver lead zinc polymetallic mineralization zone.Currently,two large silver-lead-zinc polymetallic deposits have been discovered in the mineralization zone,namely Zhonghe and Laoliwan,with good prospecting potential.Based on a systematic review of the geological characteristics of the Wachuan silver deposit area and combined with the regional mineralization conditions,this article believes that the deposit is a low-temperature hydrothermal vein shaped silver deposit of tectonic alteration rock type.Structural alteration zones and geochemical anomalies are important prospecting indicators,and points out that the next step of prospecting is in the deep part of the F 1-I silver deposit,near EW and SN fault structures,and silver single element anomaly areas.