The compositions of phyllosilicate and iron oxides for several main types of soils and their corresponding iron-manganese nodules were studied by the means of XRD.

• 以我国几种常见土壤及相应土壤铁锰结核为试验材料，应用X-射线衍射，研究了土壤和铁锰结核中层状硅酸盐和氧化铁的类型组合。