2003•Journal of Mineralogy and PetrologyRequires access

THE TUNNEL STRUCTURE OF MANGANESE OXIDES AND HYDROXIDES AND ENVIRONMENTAL SIGNIFICANCE

Liu Rui, Qin San

Abstract

The authors applied crystal chemistry to define mineral tunnel structure. Described are the features of tunnel structure of pyrolusite, ramsdellite, nsutite, hollandite, cryptomelane, coronadite, manganite, groutite, romanechite and todorokite. Pollution treatment and environmental renovation by manganese oxide and hydroxide minerals with tunnel structures are based on surface adsorption, tunnel effects, catalytic reaction, oxidation-reduction reaction and nanometer effect etc. The authors foresee that the tunnel mineral will play more important roles in development of new environmental purification function.

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Key concepts: Pyrolusite, Cryptomelane, Hollandite, Manganese, Manganite, Mineral, Hydroxide, Pollution