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Relationship between gold and manganese mineralizations in the Birimian of Ghana, West Africa

Published online by Cambridge University Press:  01 May 2009

Y. Ntiamoah-Agyakwa
Y. Ntiamoah-Agyakwa
Affiliation:
Institute of Mining and Mineral Engineering, University of Science and Technology, Kumasi, Ghana
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Summary

Studies on the distribution of manganese-bearing rocks in the Birimian and their relationship with gold mineralization are still in progress. Both manganese and gold occur as stratabound lenses within volcano-sedimentary sequence. Evidence of pre- and post-tectonic mineralizations are present. Sedimentological evidence also suggests both may have been contemporaneous with their host rocks in an environment that was strongly Eh and pH controlled. Under present tropical conditions, other elements associated with Birimian gold mineralization, notably copper and arsenic, are highly mobile to remain in residual soils. However, manganese, like iron, remains in residual soils as oxides and could be a useful pathfinder element in the search for gold in tropical lateritic soils derived from Precambrian greenstones.

Type
Articles
Information
Geological Magazine , Volume 116 , Issue 5 , September 1979 , pp. 345 - 352
Copyright
Copyright © Cambridge University Press 1979

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References

Bishopp, D. E. & Hughes, W. J. 1930. A contribution to the geology of the manganese ore deposits in the Gold Coast Colony and Ashanti. Trans. Instn Min. Metall. 39, 142–91.Google Scholar
Bowen, N. L. & Tuttle, O. F. 1949. The system MgO-Si02H2O. Bull. geol. Soc. Am. 60, 439.CrossRefGoogle Scholar
Constantinou, G. & Govett, G. J. S. 1972. Genesis of sulphide deposits, ochre and umber of Cyprus. Trans. Instn Min. Metalk. 81 no. 783, 326.Google Scholar
Ecstrand, R. O. 1975. The Sumont Serpentinite; a model for control of nickeliferous opaque mineral assemblages by alteration reactions in ultramafic rocks. Econ. Geol. 70, 183–201.Google Scholar
Hutchinson, R. W. 1965. Genesis of Canadian massive sulphide reconsidered by comparison to Cyprus deposits. Trans. Can. Inst. Min. Metall. 48, 286–300.Google Scholar
Hutchinson, R. W., Suffel, G. G. & Ridler, R. H. 1971. Metallogenic relationships in the Abitibi belt, Canada, a model for archaean metallogeny. Trans. Can. Inst. Min. Metall. 74, 106–15.Google Scholar
Junner, N. R. 1932. The geology of the Obuasi Goldfields. Mem. geol. Surv. Ghana 2.Google Scholar
Junner, N. R. 1935. Gold in the Gold Coast. Mem. geol. Surv. Ghana 4.Google Scholar
Kitson, A. E. 1927. Manganese ore deposits of the Gold Coast, Africa. Trans. Am. Inst. Min. metall. Engrs, pp. 372–6.Google Scholar
Krauskopf, K. B. 1967. Introduction to Geochemistry, pp. 248–78. New York: McGraw-Hill.Google Scholar
Ntiamoah-Agyakwa, Y. 1977 (in the press). Precambrian gold deposits of Ghana, Proc. EIZ-UNZA Conference on Utilization of Mineral Resources in Developing Countries, Lusaka, Zambia.Google Scholar
Ridler, R. H. 1970. Relationship of mineralisation to volcanic stratigraphy in the Kirkland Lake areas, Ontario. Proc. Geol. Ass. Can. 21, 33–42.Google Scholar
Ridler, R. H. 1973. Exhalite concept, a new tool for exploration, Northern Miner, Toronto, Nov. 29, p. 59.Google Scholar
Service, H. 1937. Notes on the manganiferous rocks in the Dixcove-Hautopo area. Ann. Rept. geol. Surv. Ghana, 1934–37, pp. 27–9.Google Scholar
Service, H. 1938. Geological notes on Nsuta manganese belt and adjacent country. Ann. Rept. geol. Surv. Ghana. 1937–38, pp. 14–18.Google Scholar
Service, H. 1943. The geology of the Nsuta manganese ore. Mem. geol. Surv. Ghana 5.Google Scholar
Spooner, E. T. C. & Fyfe, W. S. 1973. Sub-sea floor metamorphism, heat and mass transfer. Contr. Miner. Petrol. 42, 287–307.CrossRefGoogle Scholar