The South Shore (Ras 4) occurrence is located on Monzonite Creek, approximately 1.2 kilometres southeast of the western end of Nahwitti Lake.
Regionally, the area is underlain by northwest-trending belts of basaltic volcanics and carbonate sedimentary rocks of the Upper Triassic Karmutsen and Quatsino formations (Vancouver Group) and mafic volcanics and sediments of the Upper Triassic to Lower Jurassic Bonanza Group (Holberg volcanic unit, Nahwitti River wacke and Parson Bay Formation). These volcanic and sedimentary rocks have been intruded by granodioritic rocks of the Early to Middle Jurassic Island Plutonic Suite.
Locally, a garnet-actinolite skarn occurs in Quatsino limestone in contact with a felsite dike. Granodiorite intrusions are located nearby. Mineralization consists of sphalerite, chalcopyrite, magnetite and greenockite. Ilvaite is also present. Pyrite and pyrrhotite are present in Bonanza Group andesites and cherty(?) sediments to the south, where silicification of the volcanics is evident.
In 1952, three drillholes were reported to have encountered weak mineralization at limestone-intrusive contacts (Assessment Report 870). Hole No.2 is reported to have yielded 0.15 per cent lead and 3.0 per cent zinc over 12.15 metres (Assessment Report 17445).
In 1966, two chip samples assayed 7.17 and 11.21 per cent zinc, 0.26 and 0.15 per cent copper, 6.9 and trace grams per tonne silver with 0.04 and 0.05 per cent cadmium, respectively, across 6.1 metres (Assessment Report 870).
In 1984, a chip sample (8426552) assayed 1.18 per cent lead, 1.40 per cent zinc and 34.1 grams per tonne silver over 0.6 metre (Assessment Report 12652).
In 1991, a rock sample (5093) assayed 0.434 per cent copper, 0.333 per cent lead and 11.9 grams per tonne silver, whereas another sample (5091) assayed 2.93 per cent zinc (Assessment Report 21270).
In 1992, a chip sample (99388) assayed 6.35 per cent zinc, 0.258 per cent copper and 12.8 grams per tonne silver over 4.6 metres (Assessment Report 22283).
Three other skarn zones are reported approximately 90 metres southeast, 135 metres south and 200 metres east of the main skarn zone. The second of these zones underlies a felsite dike that strikes southeast and dips 40 degrees south, whereas the third zone (Road zone) is exposed by a logging road.
In 1951, a sample from the southeastern skarn zone is reported to have assayed 10.3 grams per tonne silver, 0.22 per cent lead and 3.7 per cent zinc (Assessment Report 870).
In 991, a drillhole 91-6, located on the Road zone, intercepted 1.67 per cent zinc over 4.5 metres (Assessment Report 23030).
In 1993, a chip sample (C28129) from the Road zone assayed 0.847 per cent lead, 1.41 per cent zinc and 2.6 grams per tonne silver over 2.0 metres (Assessment Report 23030).
The area has been explored since the early 1930s. In 1952, American Smelting and Refining completed a program of geological mapping and 13 drillholes on the Monzonite Creek and Zinc Creek (MINFILE 092L 245) zones. In 1966, Giant Explorations Ltd. completed a program of geological mapping and geochemical sampling on the area as the HPH claims. During 1969 through 1973, Giant Explorations Ltd. completed programs of soil sampling and ground and airborne geophysical surveys on the area as the Taxi claims. In 1979, Argilis Exploration Services Ltd. mapped the area as the Big Joe claim.
In 1981, Silver Bar Resources prospected the area. In 1984, the area was prospected and sampled by Daiwan Engineering as the Misty claims. During 1987 through 1991, Hisway Resources Corp. completed programs of geological mapping, ground geophysical surveys, geochemical sampling and six drillholes, totalling 381.5 metres, on the area. In 1992, Cameco Corporation completed a program of rock and soil sampling, geological mapping and ground geophysical surveys on the area. In 1993, Hisway Resources Corp. sampled and mapped the area as the Ruth Mary claim.
In 2006, New Livingstone Minerals prospected the area.
