The Heather area is underlain by rock of the Devonian Stikine Assemblage consisting of bedded limestone and mafic volcanics intruded by small mafic sills and dikes.

The mineralization is confined to the limestone and is characterized by thin, conformable, iron-carbonate altered horizons and/or dilatational quart-carbonate veins. Two mineral occurrences were sampled approximately 170 metres apart. Both occurrences were traced about 50 metres on surface. The mineralized zones in the limestone are also locally, spatially associated with metre-scale mafic sills. An ankerite-altered seam in limestone adjacent a mafic sill contains pyrite, chalcopyrite, malachite, galena and sphalerite.

2007 rock sampling results by Roca Mines confirmed the presence of copper (greater than 1 per cent) in grab samples at the Heather (Assessment Report 29475). The historical sampling results which yielded high values of zinc and lead and gold were not substantiated. The 2007 soil sampling results confirmed the presence of a multi-element soil anomaly up to 300 metres wide that extends over 600 m downslope towards the west of the Heather mineral occurrences.

In 2019, Sassy Resources Corp. completed a program of prospecting, geological mapping and geochemical sampling on the area as part of the Foremore property. An outcrop grab sample (1291920) from the Heather occurrence area assayed 21.40 per cent copper, 0.42 per cent zinc and 12.7 grams per tonne silver, whereas a 1.0-metre chip sample (1291916) from a separate location yielded 0.79 per cent copper and 34.3 grams per tonne silver (Sassy Resources Corporation [2019-12-31]: Amended Independent Technical Report - Foremore Au-Ag-Cu-Zn-Pb Property, British Columbia). Also at this time, sampling of another zone, referred to as East Heather and located approximately 500 metres to the northeast of the main Heather occurrence, yielded values of up to 0.5 gram per tonne gold, 210 grams per tonne silver, 2.11 per cent copper, 2.36 per cent zinc and 4.86 per cent lead (samples B0020989, B0020979, B0020978, B0020977 and B0020973), whereas a 1.5-metre chip sample (B0020974) yielded 129 grams per tonne silver, 0.92 per cent copper and 0.15 per cent zinc (Sassy Resources Corporation [2019-12-31]: Amended Independent Technical Report - Foremore Au-Ag-Cu-Zn-Pb Property, British Columbia).

See Foremore (104G 148) and SG (104G 181) for further details on the Foremore property.