在2:1型粘土矿物中,层电荷数为0.2—0.6之间的蒙脱石、贝得石、绿脱石、铬绿脱石、富锂蒙脫石、皂石、锌皂石、锂蒙脱石,富镁蒙脱石、脂镍皂石等都属于同族矿物,其族名使用哪个术语较好,目前国内尚不统一。在国外,被用作族名的术语有两个,一个是单名Smectite,另一个是复名Montmorillonite-Saponite,不同的矿物学家用法不同。由于后一名称较长,使用不便,因此,国际粘土研究协会在 Among 2: 1 type clay minerals, montmorillonite, beidellite, nontronite, chrysotlorite, hectorite, saponite, zinc soapite, lithium Montmorillonite, Mg-rich montmorillonite, lanthanon and other belong to the same family of minerals, whose family name which term is better, at present the country is not uniform. In foreign countries, there are two terms used as family names, one is Smectite and the other is Montmorillonite-Saponite. Different mineralogists use different terms. As the latter name is longer and inconvenient to use, the International Society for Clay Research is in