(Table 2) Chemical composition of pure bentonites and impure bentonitic clays

Samples were not desalinated (Na2O values are probably too high). All major elements calculated for LOI-free composition, assuming that most of LOI corresponds to smectite-bound...样品未进行脱盐处理（氧化钠（Na₂O）含量可能偏高）。所有主量元素均按扣除烧失量（Loss on Ignition，LOI）后的无烧失量成分进行计算，假设绝大多数烧失量来自与蒙脱石（smectite）结合的……