河南洛宁龙门店银矿成矿阶段划分及流体包裹体测温意义

河南龙门店银矿位于熊耳山西段的变质核杂岩区和金银成矿聚集区,成矿地质条件好。工业矿体受NE-NNE向断裂控制,含矿断裂带两侧具有硅化→绢英岩化（铬云母化）→钾化对称蚀变分带现象。赋矿围岩主要为新太古界太华群变质岩。矿石类型包括石英脉型和蚀变岩型。原生包裹体约占85%,次生包裹体约占15%。原生包裹体中,纯液相包裹体约占总数的70%,以直径2-6μm居多;气液两相包裹体约占28%,多为4-10μm,最大可达15μm,气相比大多介于2%-22%之间;含子矿物的三相流体包裹体约占总数的2%,直径多在5-10μm之间,气液比2%-10%。矿床可划分为石英-黄铁矿阶段（I）、石英-含金硫化物阶段（II）...

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Bibliographic Details
Published in地质与勘探 Vol. 51; no. 5; pp. 828 - 837
Main Author 庞绪成 赵少攀 杨剧文 赵定生 范少军 郭跃闪 张凯涛
Format Journal Article
LanguageChinese
Published 2015
Subjects
包裹体
成矿阶段
河南
洛宁
测温
龙门店银矿
Online AccessGet full text
ISSN0495-5331

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Summary:河南龙门店银矿位于熊耳山西段的变质核杂岩区和金银成矿聚集区,成矿地质条件好。工业矿体受NE-NNE向断裂控制,含矿断裂带两侧具有硅化→绢英岩化（铬云母化）→钾化对称蚀变分带现象。赋矿围岩主要为新太古界太华群变质岩。矿石类型包括石英脉型和蚀变岩型。原生包裹体约占85%,次生包裹体约占15%。原生包裹体中,纯液相包裹体约占总数的70%,以直径2-6μm居多;气液两相包裹体约占28%,多为4-10μm,最大可达15μm,气相比大多介于2%-22%之间;含子矿物的三相流体包裹体约占总数的2%,直径多在5-10μm之间,气液比2%-10%。矿床可划分为石英-黄铁矿阶段（I）、石英-含金硫化物阶段（II）、石英-银铅多金属硫化物阶段（III）和碳酸盐化阶段（IV）四个成矿阶段,各阶段对应的均一成矿温度分别为252-385℃、145-343℃、104-201℃和81-125℃,对应的平均盐度（wt%Na Cl.eqv）依次为5.38、17.17、31.35和14.48,属中高盐度低温热液型银铅矿。银主要形成于温度较低的第III成矿阶段。结合区域情况在矿床深部有找到中高温热液型铜金矿床的可能。
Bibliography:PANG Xu-cheng,ZHAO Shao-pan,YANG Ju-wen,ZHAO Ding-sheng,FAN Shao-jun,GUO Yue-shan,ZHANG Kai-tao （ 1. Resources and Environment Institute, Henan Polytechnic University, Jiaozuo, Henan 454003 2. Luoyang Nonferrous Group Co. Ltd., Luoyang, Henan 471000 3. Luoyang Jin Qiao Mining Co. Ltd., Luoning, Henan 471700 4. Henan Nonferrous Metals Geology and Mineral Bureau Sixth Geological Team,Zhengzhou, Henan 450016）
11-2043/P
metallogenic stage; fluid inclusion; temperature measurement; Longmendian silver mine; Luoning; Henan
The Longmendian silver deposit with good geological conditions of mineralization is located in the western part of the metamorphic core complex zone in the Xiong＇ershan,which is a gold and silver mineralization belt. In this area,industrial ore veins are mainly controlled by NE- NNE trending faults. On either side of the ore- bearing faults,there is an alteration zoning phenomenon from silicification→ beresitization（ chrome mica） → potassium. The host rock is mainly metamorphic rocks of Archean Taihu
ISSN:0495-5331