皖南泾县阳皮坑地区土壤地球化学异常特征与找矿潜力浅析

ANALYSIS ON THE CHARACTERISTICS OF SOIL GEOCHEMICAL ANOMALIES AND THE PROSPECTING POTENTIAL IN YANGPIKENG AREA, JINGXIAN COUNTY, SOUTHERN ANHUI PROVINCE

通过对阳皮坑地区1∶1万土壤测量数据进行系统分析,将区内成矿元素划分为W-Mo、Ag-Cu-Bi和Au-Pb-As-Sb三个元素组合,构成一个完整的高温-中高温-中低温元素组合;元素组合异常围绕小阳皮岩体北东侧呈"马蹄形"或"倒U形"展布,W-Mo异常与岩体(脉)分布范围基本一致,与岩体(脉)中元素丰度关系密切,成矿意义不大;Ag-Cu-Bi和Au-Pb-As-Sb异常分别在距岩体0.1~0.5km和0.5~1km的范围内分布,均为矿致异常,前者是银、铜多金属矿的重要找矿标志,后者与已知金及多金属矿化体吻合度较高,具较大的找矿潜力。

Based on the systematic analysis of 1∶10000 soil survey data in Yangpikeng area, the ore-forming elements in the area are divided into three element combinations: W-Mo, Ag-Cu-Bi and Au-Pb-As-Sb, forming a complete combination of high temperature, medium high temperature and low temperature elements;The element assemblage anomaly is distributed around the northeast side of Xiaoyangpi rock body in the shape of horseshoe or inverted U. The W-Mo anomaly is basically consistent with the distribution range of the rock body(vein), closely related to the element abundance in the rock body(vein), and of little metallogenic significance;The Ag-Cu-Bi and Au-Pb-As-Sb anomalies are distributed in the range of 0.1-0.5 km and 0.5-1 km away from the rock body respectively. They are all ore-induced anomalies. The former is an important prospecting indicator for silver and copper polymetallic ores, and the latter has a high degree of affinity with known gold and polymetallic mineralized bodies, which has a great prospecting potential.