The McLeese claims are located on a tributary of Sheridan Creek, 5.5 kilometres northeast of McLeese Lake. They were originally staked in 1966 and held by various individuals and companies. In 1971, Sheridan Copper Mines Limited performed bulldozer trenching on the property.

The McLeese showing is located near the eastern margin of the Stikinia Terrane in south central British Columbia. The dominant rock types in the region are metabasalt, limestone and argillaceous metasediments of the Mississippian to Triassic Cache Creek Group. These are intruded by the dioritic to quartz dioritic Granite Mountain Pluton and the (?)Cretaceous Sheridan Creek Pluton. The Granite Mountain Pluton has been affected by regional metamorphism (greenschist facies) and deformation along with the enclosing Cache Creek Group.

In the area of the showings chlorite-sericite schist of the Cache Creek group is in contact with fine grained diorite of the Granite Mountain Pluton. In the southern part of the area mineral- ization consists of chalcopyrite, malachite, azurite and minor pyrite in quartz lenses along a few shallowly dipping shears in both Cache Creek Group and intrusive rocks. In the northern part, chalcopyrite, malachite and minor pyrite occur as disseminations along the folia- tion of the diorite and as fracture fillings in intensely chloritized, epidotized and sericitized diorite.

The mineralization was exposed by trenches over a strike of 180 metres and a sample taken from the No.1 trench by Sheridan Copper Mines returned 0.90 percent copper over 0.45 metres (Property File Rimfire Sirola, W.M., 1971).