Novikov,G.V., Sval'nov,V.N., Bogdanova,O.Yu. and Sivtsov,A.V.(2010): Ion exchange properties of manganese and iron minerals in oceanic micronodules. Lithology and Mineral Resources, 45(5), 410-424.

『海洋マイクロノジュールにおけるマンガンと鉄鉱物のイオン交換の性質』


Abstract
 The results of experimental studies of ion exchange properties of manganese and iron minerals in micronodules (MN) from diverse bioproductive zones of the World Ocean are considered. It was found that the sorption behavior of these minerals is similar to that of ore minerals from ferromanganese nodules (FMN) and low-temperature hydrothermal crusts. The exchange complex of minerals in the MN includes the major (Na+, K+, Ca2+, Mg2+, and Mn2+) and the subordinate (Ni2+, Cu2+, Co2+, Pb2+, and others) cations. Reactivity of these cations increases from Pb2+ and Co2+ to Na+ and Ca2+. Exchange capacity of MN minerals increases from the alkali to heavy metal cations. Capacity of iron and manganese minerals in the oceanic MN increases in the following series: goethite<goethite+birnessite<todorokite+asbolane-buserite+birnessite<asbolane-buserite+birnessite<birnessite+asbolane-buserite<birnessite+vernadite≒Fe-vernadite+Mn-feroxyhyte. The data obtained supplement the available information on the ion exchange properties of oceanic ferromanganese sediments and refine the role of sorption processes in the redistribution of metal cations at the bottom (ooze) water-sediment interface during the MN formation and growth.』

Introduction
Methods
Characteristics of the starting material
Results and discussion
  Composition of the exchange complex of minerals
  Exchange capacity of minerals
  Dependence of capacity on the mineral composition of micronodules
  Dependence of the capacity of minerals on their proportions in micronodules
  Dependence of mineral capacity on the MnO2 content in micronodules
  Dependence of the capacity of manganese minerals on the nature of absorbed metal ion
  Dependence of the capacity of manganese minerals on the concentration of salt metal solutions
  Dependence of the capacity of manganese minerals on the size of micronodules
  Dependence of mineral capacity on the type of enclosing sediments
  Dependence of the capacity of manganese minerals on the depth of micronodule occurrence in sedimentary sequence
  Dependence of the capacity of manganese minerals of micronodules on the bioproductivity of oceanic waters
 Comparative analysis of ion exchange properties of ore minerals in the micronodules. macronodules, and low-temperature hydrothermal formations
Conclusions
Acknowledgments
References


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