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| 河南嵩县庙岭金矿地质特征与钾长石40Ar/39Ar定年 | |
| 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40Ar/39Ar定年[J].地质通报,2012,31(4):569-576. |
| 作者姓名： | 翟雷 叶会寿 周珂 孟芳 高亚龙 |
| 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 |
| 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) |
| 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。 |
| 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 40Ar/39Ar 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 40Ar/39Ar dating of the Miaoling gold deposit in Songxian County, Henan Province[J].Geologcal Bulletin OF China,2012,31(4):569-576. | |
| Authors: | ZHAI Lei YE Hui-shou ZHOU Ke MENG Fang GAO Ya-long |
| 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 |
| 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. |
| Keywords: | altered rock type gold deposit in fracture zone K-feldspar 40Ar-39Ar dating Miaoling gold deposit Henan Province |
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