Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Earth Science Frontiers》 2015-04
Add to Favorite Get Latest Update

Geochemical identification marks of hydrothermal metallogenic system boundary of Matou mining area,Anhui Province

MA Shengming;ZHU Lixin;XI Mingjie;TANG Shixin;SU Lei;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences;Chinese Academy of Geological Sciences;  
The identification of temporal and spatial boundary of metallogenic system is not only of great significance in theoretic research,but also can guide the mineral exploration and provide direct information for deep and periphery prospecting of known deposits.However,at present that how to determine hydrothermal mineralization boundary is still a lack of research.On the basis of long-term practice and theory and method of geochemical exploration,this paper,taking Matou porphyry molybdenum copper mine of Anhui Province for an example,proposes some geochemical identification marks to determine and judge the boundary of hydrothermal ore-forming.The experimental results show that orebody is located in the negative anomalies system of some elements such as Na2 O.In ore output area the out put amount of Na2 O of powder sandstone and granite diorite porphyry is more than 80% and rare earth element Eu shows obvious negative anomaly.In the earth's surface,mineralized belt is located in the Na2 O negative anomaly,the content of Na2 O ranges from0.1%to 0.2%,and theδ34S value being less than 3.2‰is significantly lower than that of granite in mining area periphery.Therefore,we infer that the output amount of Na2 O being more than 80% with the negative anomaly of rare earth element Eu,is the geochemistry identification mark of deep metallogenic boundary of Matou porphyry mine.Na2 O negative anomaly with content ranging from 0.1%to 0.2% andδ34S value being less than 3.2‰ are the geochemical marks of the peripheral metallogenic boundary.Our test results provide a reference for deep and periphery prospecting of Matou deposit and have a broad application prospect in delineating temporal and spatial boundary of exploration area.
【Fund】: 国家科技支撑计划项目(2014BAB05B00);; 国土资源部公益性行业专项(201111008)
【CateGory Index】: P611
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved