The weathered-residual-type kaolin deposit is a major type in the kaolin ore field of Ehu area,where mining has been practiced for a long time and dominated by small-scale operations.Mineralization characteristics,ore controlling factors and ore propecting indicators are studied based on exsiting exploration achievements and regional geological data,and the following conclusions can be drawn:The fine-grained and fine-to medium-grained granite porphyry veins,controlled by the regional NE-trending Jindezhen-Qimen deep fault,run parallelly through the center to the southwest of Ehu batholith and formed the Kaolin ore bodies in the near-surface weathering crust during the secondary-weathering phases.The scale of the ore body is mainly affected by multiple factors including structure fissure,topographic relief,water flow and the weathering resistance of wall rocks.The high quality ores can be used as raw materials directly for household porcelain and building ceramics production.This study of the ore-forming process and the mineralization regularity is of great guiding significance for the geological exploration of the same type deposit in the area.%风化残积型砂质高岭土为鹅湖高岭土矿田主要矿床类型之一,开采历史悠久,现多为小规模利用.根据鹅湖矿区勘查成果及区域资料,对其成矿特征、控矿条件、找矿标志等进行分析,细粒-中细粒花岗斑岩脉受区域性北东向景德镇-祁门深断裂带控制,呈成群平行脉状斜贯于鹅湖岩基中部和南东部,再经次生风化作用在脉体近地表风化壳中形成高岭土矿体,矿体规模受构造裂隙、地形高差、水体活动及围岩抗风化等一系列综合因素控制,矿石质量与成矿岩脉矿物含量相对应,可直接用于普通日用瓷和建筑陶瓷原料.该矿床成矿作用及成矿规律的研究成果,对区内同类型高岭土地质找矿具有指导意义.
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