中国凹凸棒石粘土矿床成因类型探讨

我国的凹凸棒石粘土矿床发现较晚 ,虽对矿床成因类型已有划分 ,但由于划分依据不明确 ,划分方案一直存在争议.本文通过分析我国凹凸棒石粘土矿床相关资料 ,提出矿床成因类型划分的依据 ,首次将我国凹凸棒石粘土矿床(点)的成因划分为沉积型、热液型和风化型三种类型及内陆湖泊火山—沉积亚型、内陆湖泊碎屑沉积亚型、内陆湖泊化学沉积亚型、海相沉积亚型 ,岩浆热液亚型、地下水热液亚型、构造动力变质热液亚型、混合热液亚型 ,风化淋滤亚型和风化残积亚型等10种亚型.首次提出构造动力变质热液亚型 ,对凹凸棒石粘土矿床的成矿理论研究和拓展找矿具有重要指导意义.

Discussion on genetic types of attapulgite clay deposits in China

Although the genetic types of the attapulgite clay deposits discovered in China have been car-ried out in some previous researches ,there are still some arguments about the division standard ,w hich is not clear enough .According to the analysis and studying of some materials related to attapulgite clay de-posits in China ,a new division standard of genesis is carried out in this paper .Three types such as sedi-mentary-type ,hydrothermal-type and weathering-type , and ten subtypes are firstly proposed , which means inland lakes volcanic sedimentary-sybtype ,inland lakes clastic sedimentary-subtype ,inland lakes chemical sedimentary-subtype ,marine sedimentary-subtype ,magmatic hydrothermal-subtypes ,groundw-ater hydrothermal-subtypes ,tectonic dynamic metamorphic hydrothermal-subtypes ,mixed hydrothermal-subtypes ,weathering leaching-subtypes and weathered eluvial-subtypes .The tectonic dynamic metamor-phic hydrothermal-subtypes are firstly proposed ,w hich have important significance on studying metallo-genic theory and developing exploration of attapulgite clay deposit .