The showings occur as approximately parallel shear zone replacements in the Lower Jurassic Hazelton Group volcanics. The host rocks are comprised mainly of massive andesite, andesitic flows and tuff. The shear zones strike between 360 and 015 degrees and have a near vertical dip or a slight dip to the west. Mineralization consists mainly of pyrrhotite, minor galena, pyrite and arsenopyrite.

The Mayflower showing, at 1615 metres elevation, consists of 46 centimetres width of mineralized vein infilling with the central 30 centimetres comprised almost entirely of pyrrhotite. Associated sulphides include galena, arsenopyrite, pyrite, and minor chalco- pyrite. A 46 centimetre channel sample from this vein which is traceable for 91 metres assayed 0.69 grams per tonne gold, 171.4 grams per tonne silver (Minister of Mines Annual Report 1929, page 162).

On the Upland claim, at 1675 metres elevation, is a parallel vein sparsely mineralized with pyrrhotite and pyrite. An adit-drift, at elevation 1768 metres on the Upland claim, exposed a north-south vein with a slight dip to the west and a 122 centimetre width. The 46 centimetre centre is comprised of massive pyrrhotite. A channel sample taken across the width assayed 1.37 grams per tonne gold, 58.28 grams per tonne silver (Minister of Mines Annual Report 1929, page 162).

Verdstone Gold Corp. and Molycor Gold Corp. sampled on the GG claims in 1998. One 1.2-metre sample assayed 1.08 per cent copper, 0.02 per cent lead, 0.03 per cent zinc, 0.14 per cent cobalt, 89.1 grams per tonne silver and 2.48 grams per tonne gold (GCNL #142(July 24), 1998).