Methods for the Determination of the Mineral Composition of Sedimentary Manganese Oxide Ores on the Basis of Their Thermal Properties

Grasselly, Gyula and Klivényi, Éva (1957) Methods for the Determination of the Mineral Composition of Sedimentary Manganese Oxide Ores on the Basis of Their Thermal Properties. ACTA MINERALOGICA PETROGRAPHICA, 10. pp. 33-46. ISSN 0365-8066

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Abstract

To elucidate 'concerning the. genetical aind geochemical conditions of the sedimentary manganese ore deposits is essential to examine the correlations of the grade of oxidation of the Mn-ores, the redox-potential and the pH of the environment. The first step to reach it is pot to know merely the-whole MnO and active O contents of the manganese oxide ores but to know their distribution among the mineral components of the ores to. be taken into consideration, i, e. the actual quantity of the mineral components contained in the sedimentary manganese oxide ore samples examined. Iiri the present paper the authors suggest a method for the determination of the mineral composition based on the thermal properties of. the manganese oxide rri^e-als usLn<î a graphic plotting as well. Employing this method the quantity of pyrolusite, manganite and psilomelane to be found near each other simultaneously in the sedimentary Mn-oxide ores in Hungary has been determined.

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