四川盐源马思罗金矿区物化探异常特征及外围找矿远景  

Characteristic of geophysical and geochemical anomaly and exploration prospect in Masiluo gold field,Yanyuan,Sichuan

作　　者：杨忠芳[1] 张志斌[2] 康亚龙[1] 张厚亮[1] 陈钧渝[3] 

机构地区：[1]四川省核工业地质调查院 [2]四川省核工业地质局二八一大队 [3]成都理工大学地球科学学院

出　　处：《黄金》2011年第12期17-21,共5页Gold

摘　　要：四川盐源马思罗金矿区位于扬子板块西缘盐源—丽江构造带中段,其内金铜铅锌成矿条件良好。重点阐述了马思罗金矿区物化探异常特征。其中,激电测量显示地表矿体深部存在低阻高激化异常;1∶5万水系沉积物测量,圈出了2处Au为主的化探异常,其面积大,分带清晰,浓集中心明显,元素组合特征指示成矿作用与中低温热液有关。另外,在矿区外围新发现1处金矿点和2处铜金矿点。在综合分析研究矿区及外围物化探异常,金矿控矿因素、成矿条件的基础上,圈出2处寻找与中低温热液有关的中大型铜金矿床远景区。Masiluo gold field locates in the middle of the Yanyuan-Lijiang tectonic zone of the western margin of the Yangtze block in Sichuan province,where the metallogenic conditions of Au,Cu,Pb and Zn are excellent.This paper mainly elaborates the characteristics of geophysical and geochemical anomalies of Masiluo gold field.IP survey shows low-resistance and high-excitation anomaly exists in the deep part of surface ore body.Through 1∶50 000 stream sediment survey,two parts of geochemical anomalies dominated by Au are delineated,which are big,clear zoned.The concentration center is obvious and the element assemblage instructs that the mineralization relates to medium-low-temperature hydrothermal.In addition,we find one point of Au ore occurrence and two points of Cu-Au ore occurrences on the peripheral area of Masiluo gold deposit.Combined with the research on the geophysical and geochemical anomalies in the mine and the periphery,ore-controlling factors and mineralization conditions,we find two prospective areas of medium-large copper-gold deposits,which relate to medium-low-temperature hydrothermal.

关 键 词：物化探异常特征 马思罗金矿区 铜金矿床 找矿远景 四川盐源 

分 类 号：P618.51[天文地球—矿床学]