河南骑马沟铅锌矿床地质特征及成因探讨  

Geological characteristics and genesis of Qimagou lead-zinc deposit,Henan

作　　者：王永丽[1] 王永军[1] 马晓辉[1] 郑萍[1] 郭锐[1] 黄培明[1] 

机构地区：[1]河南省地质矿产勘查开发局第二地质勘查院,许昌461000

出　　处：《矿产勘查》2013年第6期630-634,共5页Mineral Exploration

摘　　要：骑马沟矿区位于河南省嵩县,矿床赋存于中元古界长城系熊耳群马家河组底部的硅质大理岩中;与下伏中元古界长城系熊耳群鸡蛋坪组火山岩为整合接触,但接触界线模糊;赋矿岩石蚀变类型多、蚀变矿物复杂;成矿作用与火山喷发有关,为海相火山—气液型层控铅锌矿床。硅质大理岩中发育的空洞构造可能说明热液活动中有大量气态组分(氟)存在,与此相对应的矿化为萤石矿化。未发现与构造活动有关的破碎、角砾岩化或构造片理化现象,硅质大理岩及硅化带中的石英不具波状消光,说明矿床非构造成因。The Qimagou lead-zinc deposit is located in Song County,Henan Province.The lead-zinc orebody occurs in the siliceous marble at the bottom of the Majiahe formation,Xionger Group,Changcheng System of Mesoproterozoic Age,which is in conformable contact with the underlying volcanic rock of the Jidanping formation,Xionger Group,Changcheng system of Mesoproterozoic Age,but the conformable contact is blur.There are many kinds of alteration types as well as complicated altered minerals in the deposit.The lead-zinc mineralization is related to the volcanic eruption and the genesis of the deposit belongs to marine volcano hydrothermal strata-bound P-Zn deposit.The void texture occurred in the siliceous marble may indicate that there is a large number of gaseous fluorine in the hydrothermal activity and the fluorite mineralization was formed.In the deposit area,no any fractured,brecciated or foliated structure phenomena which were caused by the tectonic activities,were found.In addition,the quartz crystal in the siliceous marble and silicified zone does not have the wavy extinction property.Based on the above-mentioned analysis,thus it can be concluded that the lead-zinc deposit is not formed in the tectonic activity.The study on the geological characteristics and genesis of this deposit will guide prospecting the same type of metal deposit in this region.

关 键 词：铅锌矿床 地质特征 矿床成因 骑马沟 河南 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]