On the Lakeshore property, sulphide mineralization occurs in limestone of the Mississippian to Lower Permian Milford Group. Hosting the ore are fractures that strike about 290 degrees and dip about 65 degrees to the south. These are tight fractures containing clusters, pods and grains of galena, sphalerite, pyrite and pyrrhotite, generally without quartz and carbonates. A green manganese-iron silicate, knebelite (generally associated with pyrrhotite) as well as chlorte and iron carbonate are minor alteration products.
The Lakeshore workings are mainly on the Carey Fractional Crown-granted claim a few hundred feet south of Princess Creek. The early work on the Lakeshore mine was done between 1916 and 1928, and the property gained its name from the Lakeshore Mining Company, of Spokane, which owned it between 1921 and 1923. By the end of 1929, the Lakeshore was added to the Florence group (082FNE016).
In 1954, Cominco Ltd. made an agreement for eventual control of the property. Geological and geophysical surveys were done in 1954 followed in 1956 and 1957 by diamond drilling totalling 7000 metres, mainly from surface. This work was designed to test for replacement ore in the limestones like that at Bluebell, and initial results were encouraging.
In 1957, Cominco extended the lower Lakeshore adit by a total of 230 metres of drifts, crosscuts, and raises and drilled eight holes totalling 427 metres from underground. This work exposed fractures in limestone adjacent to which theres is a limited amount of replacement mineralization. Some of this mineralization was mined by leases in 1958 and 1959 and no work has been done since then.
A total of 714 tonnes of ore production is recorded for the Lakeshore deposit in four years from 1926 to 1959, with 653 tonnes produced in 1959 alone. From this, 45,969 grams of silver, 70,157 kilograms of lead, 33,359 kilograms of zinc and 100 kilograms of cadmium were recovered.