The G.M. showing is located along the southwestern contact of the Upper Triassic Nicola Group with the Late Triassic-Early Jurassic Iron Mask batholith. Most of the showing area is underlain by fractured Nicola Group andesitic tuffs containing moderate epidote, chlorite and calcite alteration. At one location a tuffaceous breccia is in stratigraphic contact with a limestone breccia. The limestone unit appears medium grey to black in colour and brecciated with recrystallized calcite veining. There is no well defined contact between the two lithologies and bedding is not apparent. Minor malachite and azurite mineralization was discovered locally within the tuffaceous breccia associated with minor shearing and vein infillings. The shearing directions are 128 degrees with vertical dips and 030 degrees with 82 degree north dips. The vein infillings appear to consist of quartz and calcite with minute black sulphide disseminations, possibly chalcocite.

In 1981, prospecting and a grid was established on the G.M. claims by J.A. Hilton. In 1983 and 1990, geological mapping and 89 soil samples, respectively, was completed on behalf of J.A. Hilton. In 2001, 416 soil samples, 17 kilometres of grid and 15.5 kilometres of ground magnetometer survey was completed on the GM claims on behalf of Gold Mask Ventures Ltd.