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Manganese Ores of Supergene Zone: Geochemistry of Formation (Paperback, Softcover reprint of hardcover 1st ed. 1996)
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Manganese Ores of Supergene Zone: Geochemistry of Formation (Paperback, Softcover reprint of hardcover 1st ed. 1996)
Series: Solid Earth Sciences Library, 8
Expected to ship within 10 - 15 working days
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The significance of manganese ores is very weil known in cast iron
and steel production, as weil as in various types of chemical raw
material and agricultural fertilizers. The world industry
development in recent years requires their increased production in
the vicinity of the metallurgical centers in different regions of
the world; high grade manganese and associated metalores are
needed. Analysis of the world production and consumption of
manganese ores by industrial countries indicates convincingly that
the highest commercial value belongs to the ores associated with
the supergene zone (National Minerals Advi- sory Board, 1981;
Coffman and Palencia, 1984; Doncoisne, 1985; Iones, 1990, 1991;
Manganese, 1990; McMichael, 1989). The remarkable property of
manganese, in contrast to many other types of mineral resources, is
that the ore accumulations of this metal are distributed in the
wide geochrono- logical interval from the Archean to the present
time; these ores are deposited in basins and supergene environments
of different types from lakes, internal seas to pelagic and abyssal
regions of the World ocean, as weIl as different types of
weathering crusts and karst. At the same time the manganese
accumulations and features of their mineral and chemical
compositions are relatively sensitive indicators, reflecting facies
and geodynamic condi- tions of their formation. These properties
aid the investigation of the Earth's evolution processes.
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