江西东华山矿区“一体多型”矿床成因探讨

Discussion on genesis of the “One Body and Polymorphism” tungsten deposit in the Donghuashan deposit area,Jiangxi

江西省石城县东华山矿区矿产丰富,矿床类型多样,各类矿产均赋存于燕山期花岗岩内外接触带上,并严格受北东向、北北东向及北北西向裂隙控制。矿区内分布已知破碎蚀变岩型铜锡矿化带(体)17条,黄玉云英岩型锡矿化带(体)4条,钨锡石英细脉带5条,工作程度相对较低。文章重点阐述矿床的地质特征,并对矿床成因进行探讨,建立"一体多型"成矿模式,以期为该区找矿拓展新思路。

Rich mineral resources are distributed in the Donghuashan area,southern Jiangxi and various types of deposits occur.These deposits occur in the inner and outlier contact zones of the granite intrusions of Yanshanian Period,and strictly controlled by NE,NNE and NNW-trending fractures.Currently,seventeen structural alteration rock type Cu-Sn mineralized zones or orebodies,four topaz-greisen type Sn mineralizatedzones,and five quartz veinlet type W-Sn mineralized zones were outlined in the study area.In general,the exploration and research on the above-mentioned mineralized zones are poor,therefore,it worth of further work.In this paper,the geological characteristics of the deposit were introduced,then the deposit genesis was discussed,and finally the metallogenic model of ＂One Body and Polymorphism＂ was proposed in order to widen the prospecting cues.