EMinar 3.26: Bob Lo - Exploration history of discovery of two deposits beneath cover, Flin Flon

The exploration history of the discovery of two VMS deposits beneath the Phanerozoic cover of the Flin Flon - Snow Lake volcanogenic massive sulphide (VMS) Belt in Manitoba and Saskatchewan is presented. Due to a lack of outcrops of the host rocks, geophysical exploration techniques were key to the discoveries. Both discoveries are attributed to geophysical techniques and both used arguably the best airborne electromagnetic technology at the time to detect the sulphide mineralization for ground follow-up and then drill testing. But it took many tries or near misses over a long period of time, either by other companies or by the discoverers in the same area, before the discovery hole was drilled. The exploration history of the McIlvenna Bay Deposit and of the Reed Mine Deposit are presented to show the perseverance and geophysics required to find these deposits.