The Cyclops (Lot 1244) is 10.2 kilometres northeast of Greenwood, at the elevation 1140 metres on the divide between Eholt and Fisherman creeks. The property adjoins the Oro Denoro Mine (082ESE063) to the north. Access to these properties is about 0.6 kilometre southwest from Highway 3 by level gravel road along an old railway bed.
The claim was Crown granted in 1899 to J.F. Hill. In the early 1950's, the property, owned by W. Cudworth and W. Trombley, was developed by Silver Chief Mines. About 490 metres of diamond drilling (by New Jersey Zinc Corp.) indicated 4500 tonnes of 8 to 10 per cent zinc (Assessment Report 10589). An adit was driven to the south for 40 metres. At 30 metres, a 5.5-metre raise was driven to the bottom of an old shaft. A 258.5-tonne shipment of ore averaged 5.9 per cent zinc, a yield of 15,254 kilograms (Annual Report 1952, p. 141).
In 1967 and 1968, Giant Exploration Limited conducted trenching and magnetometer and soil surveys. In 1981 and 1982, Kettle River Resources conducted geological mapping and sampling. A 1.8-metre chip sample assayed 16.0 per cent zinc, 0.50 per cent lead and 4.5 grams per tonne silver (Assessment Report 10589).
The property is underlain by limestone, argillite and skarn of the Triassic Brooklyn Group. The skarn carries sphalerite, chalcopyrite, pyrite, magnetite and minor galena; the skarn has been silicified in places. Development work in the 1950's showed a mineralized zone to be up to 3.6 metres in width. A concordant body of gabbro, which post-date the Triassic rocks, occurs to the south and southeast of the mineralized zone.