The Eagle Gorge 3 occurrence is located on the Oyster River, were six copper bearing quartz vein-breccia showings occur along 2 kilometre section of the river and adjacent Wowo Creek. See the location map (Figure 2) in Assessment Report 13602 for the location of each occurrence.

The area is underlain by block faulted Upper Triassic Karmutsen Formation volcanics (Vancouver Group) which are unconformably overlain by Upper Cretaceous Comox Formation sediments (Nanaimo Group). The Karmutsen rocks consist of very gently dipping thick amygdaloidal basaltic flows with interbedded pillow lavas, pillow breccias and very minor intercalated tuffaceous beds. The Comox rocks are composed of fairly flat lying conglomerates and sandstones with interbedded siltstone and shale.

The most significant showing appears as a bleached horizon approximately 2.5 metre in width, conforming to bedding in Karmutsen rocks, and having a strike of 020 degrees and dip of 40 degrees to the southeast. The zone has a porcelain-like appearance and petrographic studies show it to be a breccia of altered, partly devitrified, porphyritic, microlitic volcanic glass. It has been crackled and filled with quartz and chalcocite with lesser chalcopyrite and sericite. These veins are irregular in attitude and range from hairline to 1 or 2 centimetres of massive chalcocite. In 1983, a sample (8211-1) assayed 9.45 per cent copper and 18.5 grams per tonne silver with trace gold (Assessment Report 11461). In 1985, a random chip sample (EG-3) assayed 7.78 per cent copper, 19.54 grams per tonne silver and 0.14 grams per tonne gold (Assessment Report 13602).

Other showings contain native copper, cuprite, malachite, pyrite, magnetite, epidote, diopside, and garnet.

In 1982 and 1983, L. Bershire completed programs of prospecting, rock sampling and minor trenching. In 1984, Iron River Resources completed a program of geological mapping and rock sampling.