The Kalahari manganese field: an enigmatic association of iron and manganese.

Studies the metallogenic importance of glacial processes occurring prior to the development of the Kalahari manganese deposits in South Africa. Origin of the Kalahari manganese deposits; Comparisons between the Kalahari manganese deposit and other manganese deposits of volcanogenic origin; Questions on the aspects of the Hotazel iron and manganese association on the Kalahari deposits.