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苏皖凹凸棒石粘土矿床成矿时代为晚第三纪中新世，其赋矿层位主要为含矿岩系的顶部。通过对苏皖凹凸棒石粘土矿床成矿物质来源及成矿介质条件（ｐＨ值，氧化还原条件，温度及盐度等）的分析讨论，表明其成矿物质来自底板玄武岩（Ｎ＿１ＸＡ＿２），凹凸棒石粘土矿床便是玄武岩风化产物搬运到水盆地中通过沉积—成岩作用形成，与火山作用有关的热水溶液参与了成矿过程。其成矿介质为碱性，弱还原—还原，低盐度及低温的环境。
The Su-Wan attapulgite clay deposit was of the late Tertiary Miocene, and the ore-bearing layers are mainly the top of ore-bearing rock series. Through the analysis and discussion of the source materials of ore-forming materials and the conditions of metallogenic media (pH value, redox conditions, temperature and salinity) of the attapulgite clay deposit in Jiangsu and Anhui Provinces, it shows that the ore-forming materials are derived from basal basalt (N_1XA_2), attapulgite Stone-clay deposits are the basalt weathering products transported to the basin by sedimentation-diagenesis and hydrothermal solutions associated with volcanism are involved in the mineralization process. The mineralizing medium is alkaline, weak reduction - reduction, low salinity and low temperature environment.