The Borden Gold Deposit, northern Ontario: Contributions of VTEM helicopter time-domain EM and magnetics leading to discovery

Summary

The Borden Gold deposit (9.3 Mt @ 5.3 g/t Au) is a structurally controlled Archean mesothermal lode gold deposit within the Kapuskasing Structural Zone, in northern Ontario. Helicopter VTEM and magnetic surveys were flown over the Borden Gold deposit, helping to design the first drilling program, leading to the discovery in 2010. Initial survey results defined the extension of the near surface low-grade-zone (LGZ). Advanced processing and modelling of VTEM data also appears to map the deeper high-grade-zone (HGZ). Results of subsequent 1D imaging and 2.5D inversions, and airborne inductive induced polarization (AIP) analysis, are also presented.

• Archean
• lode gold
• electromagnetics
• modelling
• AIP