浒坑钨矿南部区段矿床类型及赋存规律初探

On the Deposit Types and Occurrence Rules of Hukeng Tungsten Deposit's Southern Section

浒坑钨矿床主要赋存于浒坑花岗岩体南缘内接触带,矿床类型主要为石英大脉型钨矿床。近年来,在矿区南西深部发现了新的矿床类型——石英细脉带型钨矿床。在系统分析矿区成矿地质条件的基础上,结合危机矿山找矿及生产探矿成果新认识,对矿区南部区段矿床类型及赋存规律进行了归纳总结。分析认为:矿床类型受岩体接触界面形态和岩体埋深的联合控制,具有“上脉下带”的矿化分带特征;石英大脉型矿体主要受早期花岗岩株浅表部的原生裂隙带和晚期北西向构造破碎带的控制;石英细脉带型矿体的产状、形态及延伸主要受“主干脉”制约。矿区南西深部细脉带型钨矿床的新发现,对赣中南同类型钨矿山找矿有借鉴意义。

Hukeng tungsten deposit mainly occurs in the contact zone in the southern margin of Hukeng granite body.In recent years,a new deposit type has been discovered in the deep south-west part of the mine-quartz fine-veined tungsten deposits.On the basis of systematic analysis of the geological conditions of mineralization in the mining area,this paper,combined with the new understanding of the results of crisis mine prospecting and production prospecting,summarizes the type of deposits in the southern section of the mining area and the law of survival.The results show that the deposit type is jointly controlled by the contact interface morphology of the rock body and the depth of burial of the rock body,with the characteristics of the"upper vein and lower zone"of mineralization zoning.The quartz macrovein type ore bodies are dominated by primary fissure zones on the shallow surface of early granite strains and late north-west tectonic fragmentation zones.The production,morphology and extension of quartz vein-banded ore bodies are mainly governed by the"backbone veins".The new discovery of the tungsten deposit in the deep south and west of the mine area is of great significance to the search for tungsten ore of the same type in Ganzhonan.