Iron and manganese are important elements in soil. Iron and manganese nodules will be formed from strong migration and ac-cumulation of the two elements in soil. Research on domestic and foreign iron manganese nodules were summarized in this paper. The author discussed the existing problems and deficiencies in the study of iron manganese nodules mainly from the aspects of the formation of Fe Mn nodules, physicochemical properties, mineral composition and element geochemical characteristics and the future research trend is analyzed as well.
iron manganese nodulesphysicochemical propertiesmineral compositiongeochemical characteristics
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