The A.B.C. occurrence is located near the east bank of the Indian River in its north western headwaters.
The area occurs on the eastern edge of the Britannia- Indian River pendant, which hosts the volcanogenic deposits of the Britannia camp (MINFILE 092GNW003). The Britannia-Indian River pendant is mainly a calc-alkaline, sub-aqueous volcanic and sedimentary sequence of felsic to intermediate pyroclastics, flows, cherts, argillites and greywackes. The entire pendant has been classified as part of the Upper Jurassic to Lower Cretaceous Gambier Group. Cenozoic to Mesozoic Coast Plutonic Complex intrusives surround portions of the stratified rocks, creating screens or pendants. These bodies are oriented north westerly throughout the Coast complex. Pliocene to recent Garibaldi Group basaltic dikes and sills intrude both the pendant and plutonic rocks.
The occurrence is underlain by Gambier Group rocks consisting of a northwest- trending sequence of felsic flows, tuffs, tuff breccia, argillite, chert and breccia, and andesite to dacite tuffs and flows. The showing is on, or close to, the Indian River shear zone, a discontinuous zone of shearing that trends northwest along the Indian River valley.
Locally, an area of disseminated pyrite, chalcopyrite and sphalerite mineralization (up to 4 per cent sulphides) is associated with an intensely hornfelsed and silicified zone. Numerous faults and a pervasive S1 cleavage are evident in the area.
The area has been historically explored in conjunction with the nearby War Eagle (MINFILE 092GNW042) and Slumach (MINFILE 092GNW036) occurrences. Past work consisted of a short adit, 9 metres long, driven into the east bank of the most northerly tributary of Indian River. In 2001, the area was prospected and rock sampled as the Elena and Tonino claims by Donegal Developments. In 2013 and 2014, Biliken Gold completed programs of prospecting and heavy mineral sampling the area. In 2015, NEK Canada Mining Group completed a program of rock sampling and geological mapping on the area.
