Quaternary geology and drift prospecting, Beardmore-Geraldton area, Ontario

A project consisting of glacial geological mapping and drift sampling was carried out in the Beardmore-Geraldton area by the geological Survey of Canada and the Ontario Geological Survey. An area extending from Lake Nipigon the town of Longlas was chosen for the study on the basis of gold and base metal potential. Till and sand samples were obtained from excavations and drill holes at roughly 1km spacing where appropriate material was available. In the vicinity of and northeast of Beardmore, till samples from the uppermost metre of thin discontinuous till contain visible gold typically 75 μm and ranging from 25 to 40 μm in size and show geochemical patterns indicative of nearby mineralization. Sampling of soil or oxidized till is therefore likely to be an effective mineral exploration tool where till is exposed at surface in this area. -from Authors