The HGM occurrence is located 7.0 kilometres west-southwest of the Cariboo-Amelia occurrence (082ESW020) of the historic Camp McKinney and near the headwater of Coteay Creek. Bridesville, British Columbia lies 11 kilometres to the southeast.
Little is known about the history of the area surrounding this occurrence prior to the McKay brothers staking the claims and trenching.
The HGM occurrence is underlain by Proterozoic Grand Forks Gneiss. Lithologies on the property consist of quartz, feldspar +/- biotite and garnet to biotite gneiss. The gneiss has a west to northwest mineral lineation which dips steeply to the north. Tight folding was observed and appears to be parallel to the strike of the regional foliation; 135 degrees. The foliation dips steeply northeast. Alteration of the gneiss consists of sericite and biotite locally developed with minor chlorite and epidote. Pyrolusite is developed on fracture and joint surfaces. A feldspar porphyry dike striking 020 degrees and dipping vertical crosscuts the gneiss. The dike is probably Eocene or Tertiary in age, as evidenced by minor alteration and its massive character. To the immediate south are Middle Jurassic Nelson intrusions and granitic rocks of the Cretaceous Okanagan batholith.
Two trenches has uncovered quartz veins hosted in moderate to strongly altered gneiss. The veins follow the prominent foliation although minor veinlets also follow fractures. Pyrite and minor galena occur as disseminations in the veins and host gneiss. An unidentified sulphide, possibly a silver sulphide, was also observed. The pyrite is strongly oxidized at the surface. Samples taken from these two trenches yielded anomalous silver values. Samples HGM-A-2 and HGM-A-3, from Trench A, yielded 5.1 and 4.9 grams per tonne, respectively (Assessment Report 19317). From Trench B, Samples HGM-B-2 and HGM-B-3 yielded 5.7 and 8.3 grams per tonne silver (Assessment Report 19317). The latter also returned 0.10 per cent lead (Assessment Report 19317).
During 2008 through 2012, Grizzly Discoveries Inc. completed programs of geochemical (rock, stream sediment and soil) sampling, geological mapping and airborne and ground geophysical surveys on the Dayton-Sidley area of the Greenwood Property.
