Abstract
Iron deposits in the Michipicoten area, of which this is the best known, were (largely because of their proximity to Lake Superior) the first to be developed in Canada. Although subsequently overshadowed by others, the Helen Mine remains in production. It is the best example of the so-called ‘Algoma’ type of iron deposit, found in various parts of the world, usually, like this one, in association with the acid volcanic rock sequences of the so-called Archean greenstone belts.
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Further Reading
Collins, W. M., Quirke, T. T. and Thomson, E. (1926), The Michipicoten Iron Ranges. Geol. Surv. Can., Mem., 147, 175pp. [Somewhat old, but the standard work on the ajrea.]
Goodwin, A. M. (1962), Structure, Stratigraphy and Origin of Iron Formations, Michipicoten Area, Algoma District, Ontario, Canada. Geol. Soc. Am. Bull., 73, 561–86. [Best description of the whole area.]
Goodwin, A. M. (1973), Archean Volcanogenic Iron Formation of the Canadian Shield. In: UNESCO. Genesis of Pre-Cambrian Iron and Manganese Deposits. Proc. Kiev Symp. 1970 (Earth Sciences 9). [Covers similar ground to 1962 paper, but more philosophical.]
Lang, A. H., Goodwin, A. M. et. al., (1970), Economic Minerals of Canadian Shield. In: Geology and Economic Minerals of Canada. (Douglas, R. J. W. ed.), Geol. Surv. Canada, Econ. Geol. Rept. I, pp. 153–226. [Contains a good summary of the problems of Pre- Cambrian iron ores and some details about the Algoma type, see pp. 170–8.]
Staff, Algoma Ore Properties (1956), Algoma Ore Properties, Part II — Helen Mine Geology. Can. Min. J., 77 (11), 80–7. [The best description of the mine itself.]
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© 1979 Colin J. Dixon
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Dixon, C.J. (1979). The Helen Iron Deposit — Canada. In: Atlas of Economic Mineral Deposits. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-6511-2_26
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DOI: https://doi.org/10.1007/978-94-011-6511-2_26
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