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周钦贤、袁慰顺(1981)将蒙脱石晶层中可交换性镁离子容量较高的一种命名为镁基蒙脱石(膨润土)。甘肃红泉镁基膨润土具有较佳的物、化、工艺性能。为此,我们对该地镁基蒙脱石及其改型机理进行了研究。 膨润土属大陆河湖相沉积成岩型,产于阿拉善台隆南缘,龙首山拱断束的震旦系复向斜核部的断陷盆地中;盆地向105°方向倾伏。外围为震旦系的碎屑岩～硅质碳酸盐岩浅海沉积,南、北两侧为泥盆系细～粉砂岩夹少量玄武岩及石炭系太原统煤系地层,盆地
Zhou Qinxian and Yuan Weishun (1981) named Mg-based montmorillonite (bentonite) as a kind of high-exchangeable magnesium ion in smectite crystal layer. Gansu Hongquan magnesium-based bentonite has better physical, chemical and technological properties. For this reason, we studied the Mg-based montmorillonite and its modification mechanism. Bentonite is a sedimentary diagenetic type of continental lacustrine deposits, produced in the southern margin of Altay, Longsonshan arch fractures of the Sinian synclinorium core faulted basin; basin to the direction of 105 ° dip. Periphery is Sinian clastic to siliceous carbonate rock shallow sea sedimentary, south and north sides of the Devonian fine siltstone sandstone with a small amount of basalt and Carboniferous Taiyuan coal measure strata, basin