The Main vein zone is situated within the "final" felsic schist generally 10-30 metres northwest of the Discovery Zone. Like the Discovery Zone, it can be traced along strike for 950 metres.
The zone consists of multiple 0.5-15cm quartz-calcite veins (mainly 1-3cm) and strong patchy silicification with 5-10% disseminated pyrite (up to 25%) and minor, though locally abundant chalcopyrite and sphalerite. Visible gold was observed in two drill holes. The host schists are strongly sericitic, silicified and locally display salmon-coloured bleaching.