湖南张家界南岳矿区钼矿地质特征及矿床成因分析

Geological Characteristics and Genesis of Molybdenum Deposits in Nanyue Mining Area in Zhangjiajie,Hunan

以湖南省张家界市南岳矿区为研究区,采用地质简测、工程揭露及样品分析等手段研究了矿区内寒武系纽芬兰统牛蹄塘组钼矿的地质特征。研究结果表明:区内钼矿层主要分布于寒武系纽芬兰统牛蹄塘组底部炭质页岩中,共分a、b、c、d四个岩性层,主要以b、c两层为主,厚度、品位均较稳定。矿层厚度0.56~1.43 m,Mo品位0.06%~0.15%。本文在阐述成矿地质背景、矿区地质特征、矿体(层)特征的基础上,总结认为矿床成因属沉积矿床。

Taking the Nanyue mining area in Zhangjiajie City of Hunan Province as the research area,the geological characteristics of the Cambrian Newfoundland Niutitang Formation molybdenum deposits in the area were studied by means of simple geological survey,engineering disclosure and sample analysis.The research results show that:the molybdenum deposits are mainly distributed in the carbonaceous shale at the bottom of the Cambrian Newfoundland Niutitang Formation,which can be divided into four lithologic layers:a,b,c and d,and b and c are the main two layers with stable thickness and grade.The thickness of mineral bed is 0.56~1.43 m,and molybdenum grade is 0.06%~0.15%.Based on the elaboration of metallogenic geological background,geological characteristics of mining area and characteristics of the ore body(deposit),this paper concludes that the genesis of the deposit belongs to sedimentary deposit.