摘要
豫西嵩县下蒿坪金矿位于外方山多金属成矿带,矿区构造、岩浆活动强烈,成矿地质条件良好。矿区主要出露地层为中元古界熊耳群鸡蛋坪组中酸性火山岩,矿体受火山构造和断裂构造控制,NWW向断裂及角砾岩体周围的环状放射状断裂是金矿的主要控矿因素,金矿化与隐爆角砾岩和爆破角砾岩密切相关,NEE向断裂构造控制银铅锌矿化。结合相关资料,认为下蒿坪矿床形成时间与矿区南部的合峪岩体侵位时间一致,提出该矿床是晚中生代岩浆热液矿床。
Xiahaoping gold deposit at Songxian of West Henan Province,is located in the Waifangshan polymetallic metallogenic belt.The structure and magmatic activity are strong,and the metallogenic and geological condition is good in the mining area.The main outcrop strata in the mining area are the intermediate-acid volcanic rocks of Jidanping formation of Xiong'er Group,Mesoproterozoic.The orebody is controlled by the volcanic structure and fractured structure.NWW-trending faults and ring-shaped radial faults around the breccia body are the main ore-controlling factors of gold deposit.Gold mineralization is closely related to cryptoexplosive breccia and blasting breccia.NEE-trending fractured structures control the silver,lead and zinc mineralization.Based on the relevant data,it is considered that the formation time of Xiahaoping deposit is consistent with the emplacement time of the Heyu pluton in the southern part of the mining area.It is proposed that the deposit belongs to the magmatic and hydrothermal type deposit of Late Mesozoic.
作者
方荣
杨森
英亚歌
徐刚
门道改
FANG Rong;YANG Sen;YING Yage;XU Gang;MEN Daogai(The Third Geological Brigade of Henan Province Non-ferrous Metals Geological Mineral Resources Bureau,Zhengzhou 450016,Henan,China;The Engineering Research Center for Non-Ferrous Metals Mineral Exploration of Henan Province,Zhengzhou 450016,Henan,China;The Fifth Geological Brigade of Henan Province Non-ferrous Metals Geological Mineral Resources Bureau,Zhengzhou 450016,Henan,China)
出处
《矿产与地质》
2021年第4期635-640,647,共7页
Mineral Resources and Geology
基金
国土资源部公益性行业科研专项资金项目“熊耳山矿集区矿产综合勘查技术示范”(编号:201111007-2)资助。
关键词
下蒿坪金矿床
地质特征
矿床成因
嵩县
豫西地区
Xiahaoping gold deposit
geological feature
deposit genesis
Songxian
West Henan
