| 河南嵩县庙岭金矿地质特征与钾长石~（40）Ar/^（39）Ar定年 |
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| 引用本文： | 翟雷,叶会寿,周珂,孟芳,高亚龙.河南嵩县庙岭金矿地质特征与钾长石~（40）Ar/^（39）Ar定年[J].中国区域地质,2012(4):569-576. |
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| 作者姓名： | 翟雷 叶会寿 周珂 孟芳 高亚龙 |
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| 作者单位： | [1]河南省地质矿产勘查开发局第一地质调查队,河南洛阳471023 [2]中国地质科学院矿产资源研究所／国土资源部成矿作用与资源评价重点实验室,北京100037 [3]中国地质学会,北京100037 [4]中国地质大学（北京）地球科学与资源学院,北京100083 [5]天津华北地质勘查局,天津300170 |
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| 基金项目： | 中国地质调查局全国危机矿山接替资源找矿项目《河南省嵩县庙岭金矿接替资源勘查》（编号：200541020）、《河南省栾川县康山金矿接替资源勘查》（编号：200841019） |
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| 摘 要： | 河南嵩县庙岭金矿位于华北陆块南缘熊耳山—外方山地区。矿床赋存于中元古界熊耳群火山岩中近南北向断裂带内,矿体呈似层状、透镜状产出,矿石具浸染状、细网脉状构造和微细粒它形粒状晶粒结构、交代结构,围岩热液蚀变有硅化、钾长石化、绢云母化、黄铁矿化等,矿化具有多阶段的特点,属破碎带蚀变岩型金矿。成矿热液蚀变矿物钾长石Ar-Ar法测年的结果：坪年龄为121.6Ma±1.2Ma,等时线年龄为117.0Ma±1.6Ma,表明矿床形成于早白垩世,与熊耳山地区祁雨沟、瑶沟等金矿床形成于同一时期,属与早白垩世构造-岩浆-流体活动有关的产物。
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| 关 键 词： | 破碎带蚀变岩型金矿 钾长石40Ar-39Ar定年 庙岭金矿 河南 |
Geological characteristics and K-feldspar ^（40）Ar/^（39）Ar dating of the Miaoling gold deposit in Songxian County, Henan Province |
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| ZHAI Lei,YE Hui-shou,ZHOU Ke,MENG Fang,GAO Ya-long.Geological characteristics and K-feldspar ^（40）Ar/^（39）Ar dating of the Miaoling gold deposit in Songxian County, Henan Province[J].Regional Geology of China,2012(4):569-576. |
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| Authors: | ZHAI Lei YE Hui-shou ZHOU Ke MENG Fang GAO Ya-long |
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| Institution: | 1.No.1 Geological Surveying Party,Henan Bureau of Geology and Mineral Exploration and Development,Luoyang 471023,Henan,China;2.MLR Key Laboratory of Metallogeny and Resources Assessment/Institute of Mineral Resources,Chinese Academy of Geological Sciences,Beijing 100037,China;3.Geological Society of China,Beijing 100037,China;4.School of Earth Science and Resources,China University of Geosciences,Beijing 100083,China;5.Tianjin North China Geological Exploration Bureau,Tianjin 300170,China |
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| Abstract: | The Miaoling gold deposit in Songxian County of Henan Province is located in the Xiong′ershan-Waifangshan area on the south margin of North China craton.The ore deposit is hosted in the Mesoproterozoic volcanic rocks of Xiong′er Group,along a NS-trending fracture zone.Ore bodies occur in layered and lenticular forms,and ores have disseminated and stockwork structure with anhedral fine-grained texture and replacement texture.Hydrothermal alterations of the wall rock include silicification,K-feldspathization,sericitization,pyritization etc.Mineralizations show multi-stage characteristics and the gold deposit is of the fracture zone altered rock type.40Ar-39Ar plateau age and isochron age of K-feldspar are respectively 121.6Ma±1.2Ma and 117.0Ma±1.6Ma,indicating that the ore deposit was formed in Early Cretaceous,identical in age with Qiyugou,Yaogou and other gold deposits in Xiong＇ershan area.They therefore may be products of structure-magma-fluid activity in Early Cretaceous. |
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| Keywords: | altered rock type gold deposit in fracture zone K-feldspar 40Ar-39Ar dating Miaoling gold deposit Henan Province |
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