The Crandon deposit is a nearly vertical stratabound massive sulphide, with a gossan of as much as 30 m, and is covered by 25-65 m of glacial drift. Samples from a depth of 0.5 m along 9 traverses over the deposit were analysed for soil gases. The resulting assay maps for CO2, CH4 and O2, together with the putative effects of oxidizing sulphides locate the deposit; no sulphur gases were detected.-G.J.N.
Additional publication details
A case study of soil gases as an exploration guide in glaciated terrain - Crandon massive sulfide deposit, Wisconsin.