我国凹凸棒石黏土矿床成因类型及时空分布规律OA

Attapulgite clay possesses excellent properties such as a unique crystal structure,strong adsorption capacity,and catalytic activity,and plays an important role in emerging industries including new energy,advanced materials,energy conservation and environmental protection,and biomedicine.Based on ore-forming geological processes,this paper classifies the genetic types of attapulgite clay into four categories:continental volcanic rock type,evaporative sedimentary type,chemical sedimentary type,and weathering type.Orebodies are generally hosted in arid or semi-arid inland alkali lakes,salt lake basins,alkaline basalt basins,and shallow marine carbonate platforms in tectonically stable areas.They were mainly formed in the Cenozoic Era and are spatially distributed primarily in the Ⅱ-68 Northern Jiangsu(Fault Basin)Metallogenic Belt and the Ⅲ-18 Alxa(Uplift)Metallogenic Belt.The most important distribution areas of attapulgite in China are Mingguang,Lai'an,Xuyi,and Liuhe counties at the junction of Jiangsu and Anhui provinces,as well as Huining County and Linze area in Baiyin city,Gansu province.