山东莱西市下庄金矿地质特征及构造控矿规律

对山东莱西下庄金矿的地质特征及控矿规律进行研究,以用于指导区域矿产勘查和开发。下庄金矿的地质背景分析显示该金矿属蚀变岩型金矿,矿体呈脉状赋存于招平断裂下盘花岗质碎裂岩带内。采用地表工程和深部钻孔,对矿体、矿石、围岩蚀变等矿床地质特征进行深入研究,圈定了金矿体8个,共获得金矿石量687692t、金金属量2260kg,平均品位3.29×10-6。综合分析发现,招平断裂带南段有较大的找矿前景,构造产状变化部位是找矿的有利部位,对金矿勘探有重要的指示意义。

The geological characteristics and structural ore-controlling rules of Xiazhuang gold mine, Laixi City, Shandong Province

By means of the research about the geological characteristics and ore-controlling rules of Xiazhuang gold mine, Laixi City, Shandong Province, to guiding the regional mineral exploration and development. Based on the analysis of the geological background of Xiazhuang gold mine, the results show that the Xiazhuang gold mine belongs to the altered rock type gold deposit, orebody was mainly occur in the footwall of Zhaoping fault granitic cataclastic rock zone. With the aid of the ground and deep drilling engineering, we carry out the in-depth study about the geological characteristics of ore deposit, such as ore body, ore, wall rock alteration et al. It framed the eight gold ore bodies, received gold ore quantity is 687692 t, gold metal quantity is 2260 kg, the average grade of 3.29?10-6. The conclusion points out that the southern zone of Zhaoping fault belt has great prospecting potential, and the structural transition parts are favorable prospecting positions. It has the important implications to the gold deposit exploration.