检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:刘文毅 何美香 孙宏伟 王良 李晓姣 LIU Wenyi;HE Meixiang;SUN Hongwei;WANG Liang;LI Xiaojiao(The Seventh Geological Team of Henan Nonferrous Metals Geological Bureau,Zhengzhou 450016,Henan,China;Henan Engineering Research Center for Non-ferrous Metal Mineral Exploration,Zhengzhou 450016,Henan,China;Henan Natural Resources Science and Technology Innovation Center(Multi-source Remote Sensing Application Research),Zhengzhou 450016,Henan,China)
机构地区:[1]河南省有色金属地质矿产局第七地质大队,河南郑州450016 [2]河南省有色金属矿产探测工程技术研究中心,河南郑州450016 [3]河南省自然资源科技创新中心(多源遥感应用研究),河南郑州450016
出 处:《矿产勘查》2022年第8期1080-1090,共11页Mineral Exploration
基 金:河南省有色金属地质矿产局科研项目(YSDK2013-07)资助。
摘 要:泼河岩体位于河南省光山县泼陂河镇,主要岩石类型有花岗斑岩、(黑云)斜长花岗斑岩,前人对研究区西部陈冲岩体开展了较全面的研究工作,而对于泼河岩体却鲜有报道。本文通过野外地质工作以及岩石地球化学分析,认为岩石属中酸性—酸性岩,具高硅(SiO_(2)=66.96%~74.76%)、过铝质(A/CNK=1.44~1.91)、钙碱性—碱性(σ=2.03~3.48)和高钾(K_(2)O=4.51%~5.35%)特征。岩石分异指数较高(DI=84.59~93.30),经历了斜长石、磷灰石、金红石以及暗色矿物(黑云母等)的分离结晶作用。岩体的固结指数变化大(SI=0.93~10.27),是在脉动条件下形成的杂岩体,由于冷凝迅速,岩相变化大,主要以爆破角砾岩形式产出,构成一个爆破角砾岩(角砾岩成分主要为同期花岗斑岩和(黑云)斜长花岗斑岩)为主体的浅成—超浅成岩。区内细脉状黄铁矿化蚀变与金多金属矿关系密切,通过实施槽探和钻探工程发现18条金多金属矿化体,岩体中金的含量高于同类岩石平均值的32倍,铜高4倍、银高7倍,是一个值得进一步探索寻找金多金属矿的岩体。The Pohe pluton is located in Popihe Town,Guangshan County,Henan Province.The main rock types are granite porphyry and(biotite)plagiogranite porphyry.The predecessors have carried out comprehensive researches on the Chenchong pluton in the western part of the study area.There are few reports on the Pohe pluton.In this paper,through field geological work and rock geochemical analysis.It is believed that the rock is a medium-acidic-acidic rock with high silicon(SiO_(2)=66.96%~74.76%),peraluminum(A/CNK)=1.44~1.91),calc-alkaline-alkaline(σ=2.03~3.48)and high potassium(K_(2)O=4.51%~5.35%).The rock differentiation index is high(DI=84.59~93.30),and it has experienced the fractional crystallization of plagioclase,apatite,rutile and dark minerals(biotite,etc.).The consolidation index of the pluton varies greatly(SI=0.93~10.27),and it is a complex formed under pulsating conditions.Due to rapid condensation,the petrofacies changes greatly.It is mainly produced in the form of blasting breccia,forming an epigenetic-ultra-epigenetic rock mainly composed of blasting breccia(the breccia is mainly composed of contemporaneous granite porphyry and(biotite)plagiogranite porphyry).The veinlet pyritic alteration in the area is closely related to gold polymetallic deposits.18 gold polymetallic mineralizations have been found through trenching and drilling projects.The content of gold in the pluton is 32 times higher than the average of similar rocks,copper is 4 times higher,and silver is 7 times higher.It is a pluton worthy of further exploration to find gold polymetallic deposits.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.38