河南省栾川县扎子沟钨钼矿区矿床成因浅析

摘要

Luanchuan Zhazigou tungsten-molybdenum ore deposit locates in eastern section of junction between the North China platform south edging and the Qinling fold belt,and locates in the core of Luanchuan centralization WMo-Pb-Zn ore deposits.Ore-controlling factors of Zhazigou tungsten-molybdenum ore deposit were discussed based on its geological features.The ore-forming layers are the Baishugou group (Qnb) of Guandiaokou group,and the Sanchan group (QnZs) and the Nannihu group(QnZn) of Luanchuan group.Tungsten-molybdenum ore deposit orebodies output modes are controlled by Huangbeiling-shibaogou anticlinorium,NWW fault,and yanshanian porphyritic monzonite granite of both Shibao and yuku.The molybdenum-mineralization relations with ore types,wall-rock alteration,mineral enrichment conditions,and ore-forming geochemical conditions were discussed.Tungsten-molybdenum ore bodies in time and space distribution were analyzed,and the genesis of Zhazigou tungsten-molybdenum ore deposit were summarized.It has guiding significance for future prospecting.%栾川县扎子沟矿区位于华北地块南缘与秦岭褶皱带的结合部位,栾川钼钨铅锌矿集区的中部.本文在讨论成矿地质背景的基础上,论述了扎子沟矿区钨钼矿控矿因素.官道口群白术沟组(Qnb)及栾川群三川组(QnZs)、南泥湖组(QnZn)是本矿区的主要含矿地层.黄背岭—石宝沟复式背斜和北西西向断裂、石宝沟和鱼库燕山期斑状二长花岗岩体控制着钨钼矿体产出状态.并研究了与钨钼矿化有关的矿石类型、围岩蚀变、成矿富集条件、以及有利于成矿的地球化学条件.分析了钨钼矿体在时间和空问上的分布规律,总结出扎子沟钨钼矿矿床成因,对以后的找矿工作具有一定的指导意义.