The GER occurrence is located on or near the Adam River in its southern head waters, approximately 2.4 kilometres northeast of Mount Adam.

Regionally, the area is underlain by Late Paleozoic limestones, exposed in low lying areas east of the claims. They are overlain by, the informally named, Daonella beds, a Middle Triassic unit of black shale and siliceous tuffaceous cherts, which in turn is overlain by the Karmutsen basalts, a thick pile of pillowed and massive sub-aqueous to subaerial lavas. Intrusive rocks include Early to Late Triassic diabase sills (emplaced mainly in the Daonella beds), and later, large Jurassic granodiorite plutons.

Locally, quartz veins hosts pyrite, chalcopyrite and sphalerite mineralization. In 1996, a sample (DL-CR-2) of mineralized quartz vein assayed 0.546 per cent copper, 0.127 per cent zinc and 15.4 grams per tonne silver (Assessment Report 24946).

In 1984, Falconbridge completed a program of geological mapping, soil sampling and ground magnetic and electromagnetic surveys on the area as the Nisnak property. This work identified a number of electromagnetic conductors and a soil copper anomaly (Assessment Report 13000). In 1996, First Choice Industries completed a two day program of prospecting the area as the GER 1-6 claims.