灵北断裂带凤凰庄测区多元异常信息找矿预测  

Prospecting prediction based on multiple anomaly information in Fenghuangzhuang survey area of Lingbei fault zone

作　　者：颜倩琼 杨斌[1,2] 祝涛 阚靖[1,2] 

机构地区：[1]中南大学有色金属成矿预测教育部重点实验室,中南大学地球科学与信息物理学院 [2]山东招金集团有限公司

出　　处：《黄金》2016年第2期22-25,共4页Gold

基　　金：国家科技支撑计划资助项目(2006BAB01B07);973计划前期研究专项课题(2007CB416608)

摘　　要：凤凰庄测区位于灵北断裂带灵山沟金矿区南西侧。本次选择了蚀变填图和地表构造地球化学测量作为多元异常信息找矿的主要手段,测量范围约3 km2,绢英岩化蚀变异常区可作为矿化元素聚集区标志,钾化蚀变异常可作为矿化元素活化区标志。测区内发现3处高浓度并成规模的Au元素异常带,Au元素含量分形特征显示Au经历过多次成矿富集作用,结合多元统计分析,厘定测区构造地球化学找矿标志为Au-As-Sb元素组合与斜交因子Y(i,2)和Y(i,3)得分异常。根据蚀变填图和构造地球化学测量综合信息,圈定了3处找矿靶区。Fenghuangzhuang survey area is located in the southwest of Lingshangou gold district in Lingbei fault zone. Structural alteration mapping and surface tectonic geochemistry were chosen as the means for ore prospecting in the study. The survey area is about 3 km2. Sericite-quartz alteration anomaly is recognized as the marker of mineralized elements enrichment zone,while potassic alteration anomaly as mineralized elements activation zone. Three scaled high concentration Au anomalies were found in the survey area. Fractal dimension statistics of Au showed the area experienced multiple gold mineralization. Combined with multivariate statistical analysis,the study determined Au- As- Sb association anomalies and oblique factor score anomalies of Y（ i,2） and Y（ i,3） as clues of tectonic geochemistry prospecting. Three prospecting targets were delineated based on structural alteration mapping and tectonic geochemistry.

关 键 词：灵北断裂带 构造蚀变填图 构造地球化学 找矿预测 凤凰庄测区 

分 类 号：TD11[矿业工程—矿山地质测量] P618.51[天文地球—矿床学]