The Big Sicker (Rocky 2) occurrence is located at an elevation of approximately 550 metres on the southeastern slope of Big Sicker Mountain.

Regionally, the area is located within the Cowichan uplift and is underlain mainly by andesitic to rhyolitic volcanics of the Middle to Upper Devonian McLaughlin Ridge and Myra Formations (Sicker Group). The local stratigraphy is disrupted by folding, faulting (pre-Triassic as well as Paleogene–Neogene), intrusions of gabbro and diabase sills and dikes (known as the Mount Hall gabbro) that are coeval with the Upper Triassic Karmutsen Formation (Vancouver Group).

Locally, a series of graphitic schist, cherty tuff and rhyolite porphyry hosts fine-grained pyrite, chalcopyrite, sphalerite and minor galena in a gangue of barite, quartz and calcite. The mineralized outcrop is exposed below and above a road cut and trends northwest. Similar mineralized outcrops are reported approximately 450 metres to the northwest and west-northwest and near the southeastern and southern side of the summit of Big Sicker Mountain.

In 2014, a rock sample (Q029783) from the road cut outcrop assayed 1.55 per cent copper and 4.0 grams per tonne silver, and a rock sample (Q029779) from the southeastern summit outcrop yielded 0.17 per cent copper (Assessment Report 35408).

In 2019, a rock sample (Q029820) from the southern summit outcrop area assayed 0.63 per cent copper (Assessment Report 39176).

Work History

Historical underground workings, likely dating to the early 1900s, are reported in the occurrence area.

During 1978 through 1980, S.E.R.E.M. Limited completed programs of geological mapping, ground geophysical surveys and soil sampling on the Rocky claims.

In 1982, a three-hole drill program, totaling 107 metres, was completed for Philip Liberman on the Sicker 1-2 and Geo 1-2 claims. In 1985 and 1986, Falconbridge Copper completed programs of geological mapping, rock sampling and an induced polarization survey on the Sicker and Rocky claims. In 1987, Minnova Inc. completed 16 diamond drill holes, totalling 3217.2 metres, on the Twin property. During 1988 through 1990, Minnova completed programs of geochemical sampling and at least eight diamond drill holes, totalling 3102.5 metres, on the Mount Sicker property.

In 2008, Westridge Resources completed a 440.3 line-kilometre airborne geophysical (magnetic and electromagnetic) survey on the area as part of the Fortuna property. In 2010, Westridge Resources conducted a program of geological mapping and rock sampling on the area as the Big Sicker Mountain property.

In 2014 and 2019, Le Baron Prospecting conducted a program of prospecting and rock sampling on the area as the Mt. Sicker Copper property.