Volume 11, Number 1 (1984)
Articles

Witwatersrand-Type Paleoplacer Gold in the Huronian Supergroup of Ontario, Canada

D. J. Mossman
Department of Geology, Mount Allison University, Sackviile, N.B.
G. A. Harron
Dupont of Canada Exploration Ltd., Vancouver, B.C.

Publié-e 1984-03-03

Comment citer

Mossman, D. J., & Harron, G. A. (1984). Witwatersrand-Type Paleoplacer Gold in the Huronian Supergroup of Ontario, Canada. Geoscience Canada, 11(1). Consulté à l’adresse https://journals.lib.unb.ca/index.php/GC/article/view/3370

Résumé

There are encouraging signs of the potential of the Huronian Supergroup to host Witwatersrand-type paleoplacer gold. A total of thirty-one Au or Au-U occurrences are recognized as being stratiform. Of these, two occur in the Cobalt Group, four in the Quirke Lake Group, nineteen in the Hough Lake Group and six in the Elliot Lake Group. The greatest number of occurrences are located in the Matinenda and Mississagi Formations of the Elliot Lake and Hough Lake Groups. Gold in basal Huronian rocks is related to basement geology and to a local source. Exciting recent finds in the upper Huronian Lorrain Formation in the northern half of the Cobalt Embayment represent extensively reworked fluvial deposits in braided streams distant from the provenance of the gold. Geological conditions closely resemble those of the Witwatersrand. Sedimentological studies hold the key to locating the more attractive concentrations of gold.