The property is underlain by sediments and volcanics of the Cambrian to Ordovician Eagle Bay Formation, consisting of limestones, schists and tuffs.
Mineralized quartz veins, trending southeast, occur within the volcanics and limestones. The veins carry galena and tetra- hedrite. A 5.0 centimetre wide vein gave 44.25 per cent lead and 2976 grams per tonne silver and a 46 centimetre wide vein ran 4.92 per cent lead and 429 grams per tonne silver.