河南镇平老庄铜钼矿床地质特征及找矿远景分析

Analysis of geological characteristics and prospecting potentials of Laozhuang copper-molybdenum deposit in Zhenping,Henan Province

老庄铜钼矿床为以钼为主的斑岩型矿床。研究结果表明,区内钼矿体皆为盲矿体,以似层状、透镜状赋存于燕山期花岗斑岩体的内、外接触带中。燕山期花岗斑岩为Cu、Mo矿的形成提供了成矿物质,为成矿母岩。矿石类型有斑岩型和矽卡岩型2种。后者分布于岩体的外接触带近爆破角砾岩(碎裂大理岩)一侧的石榴石(透辉石)矽卡岩之中。老庄矿区及其外围铜钼矿体众多,成群产出,厚度较大,品位较高。矿区深部及周边具有很大的找矿潜力。通过进一步开展地质勘查工作,可望使该铜钼矿床的规模达到中—大型。

Laozhuang copper-molybdenum deposit is a porphyry deposit majoring in molybdenum. Research shows that molybdenum in the deposit is all blind orebody taking form of lens and quasi-lamellar structures while occurring in inner and outer contact zones of Yanshanian granites porphyry rock masses. The Yanshanian granites provide the base materials for the mineralization of Cu and Mo,that is mother rock. The rocks are classified into two types namely por- phyry and skarn. The latter distributes in the garnet skarn （diopside） near the side of explosive breccia （ cataclastic marble） in outer contact zones. Copper-molybdenum orebodies immensely exist in Laozhuang district and its peripher- als, always in groups and with thickness and high level of grades. There are great prospecting potentials deep in the district and its peripherals. The expectation is that through further exploration work, the mine will be expanded to a mid-large scale deposit.