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A ground-water mixing model for the origin of the Imini manganese deposit (Cretaceous) of Morocco.

Economic Geology

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Abstract

Three beds of manganese oxide ore in a 10 m-thick dolomite unit are associated with diagenetic features, and, are accordingly also diagenetic in their present aspect. Whether primary or introduced, the Mn mineralogy is attributed to reactions between fresh and saline ground-waters as the zone of mixing passed through the dolomite unit during a period of falling sea-level. The succession of diagenetic changes is: 1) precursor carbonates, 2) dolomite-janggunite, 3) hollandite-pyrolusite-chert-calcite.-G.J.N.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A ground-water mixing model for the origin of the Imini manganese deposit (Cretaceous) of Morocco.
Series title:
Economic Geology
Volume
81
Issue:
1
Year Published:
1986
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
65
Last page:
79
Number of Pages:
15