江西宜春优质高岭土矿的形成机理探讨  

Discussion on the Forming Mechanism of the Yichun High─Quality Kaolin Deposit,Jiangxi Province

作　　者：汪永进[1] 方邺森[2] 

机构地区：[1]南京师范大学地理系,南京210097 [2]南京大学地球科学系,南京210008

出　　处：《建材地质》1994年第6期2-7,共6页

摘　　要：本区高岭土具有贫铁、高白度特征，并富含Li、Rb、Cs等微量元素。高岭石类矿物主要成分为结晶差的鳞片状高岭石和管状7A埃洛石。高岭土矿的形成主要受成矿前花岗岩的钠长石化等热液蚀变作用和后期风化作用两个地质因素的控制。这种成矿方式在华南具有普遍意义。“钠化”是寻找风化残积型优质高岭土的重要岩石学标志。The kaoLin deposit in Yichun area is characteristic of poor ferric oxide. High-whiteness andrich trace elements Li,Rb,Cs. The principal sorts of kaolinite-group minerals are poorly crystallized scalykaolinite and tubular halloysite(7A). The formation of kaolin deposit is mainly controled by two geologicalfactors included hydrothermal alteration, i. e., premetallogenic of granite and weathering. The mineralizationway is of widespread significance in south china. Albitigation of granites is a important petrologica1 mark forexploring high-quality weathering residual kaolin deposits.

关 键 词：钠长石化 风化作用 高岭土矿床 形成机理 

分 类 号：P619.232[天文地球—矿床学]