鲁南新庄地区多金属矿产地质调查及成矿潜力分析

Polymetallic survey and metallogenic condition analysis in Xinzhuang area of South Shandong

在实施山东省15万新庄幅区域矿产地质调查项目过程中,通过收集分析整理以往有关地质成果,利用遥感地质调查、物探工作(包括重力面积工作、磁测面积工作、重磁剖面工作、物性工作、地面γ能谱剖面测量)、化探重砂测量工作、采样及测试分析、矿产综合检查、综合调查研究等技术方法,圈定3处遥感异常和3处找矿靶区,圈定局部重力异常11处,其中重力高异常5处,重力低异常6处,并择优进行了查证,重砂测量在9条煌斑岩脉内挑选出大量金刚石指示矿物946颗,缩小了区内金刚石找矿范围,提供了金刚石矿产的找矿信息。本次矿产地质调查工作圈定1处典型成矿预测区(估算金矿金属量3101 kg,稀土氧化物总量50212 t)、2处成矿远景区、4处找矿预测区、1处找矿靶区,新发现铜锌金矿点1处、铜矿点1处、铜及稀土矿点1处、稀土矿点1处,对其成矿地质条件进行综合分析,找矿潜力作出评价。

In the progress to carry out the 150000 regional mineral geological survey project of Xinzhuang ampulitude in Shandong Province,through collection and analysis of the relevant geological achievements in the past,with the methods of remote sensing geological survey,geophysical prospecting methods(including gravity survey,magnetic survey,gravity and magnetic profile,γ-spectrum profile),heavy sand survey,sampling and testing analysis,comprehensive mineral resources inspection,and comprehensive investigation and research,three remote sensing anomalies and three prospecting targets are delineated,and 11 local gravity anomalies are delineated,including 5 high gravity anomalies and 6 low gravity anomalies,a number of 946 grains of diamond indicator minerals are selected from 9 lamprophyre dikes in the heavy sand survey.It narrows the area for diamond prospecting and provides a lot of diamond prospecting information.This mineral resources survey work delineates one typical metallogenic prediction area,in where gold metal resources of 3101 kg and total rare earth oxide amount of 50212 t are estimated,two metallogenic prospective areas,four prospecting prediction areas and one prospecting target area.One copper-zinc-gold ore occurrence,one copper ore spot,one copper and rare earth ore spot and one REE ore spot are also found as well.The metallogenic geological condition is analyzed and the prospecting potential is evaluated.