The Revelstoke map area lies in the southeastern part of the province and
contains 45 documented occurrences. The map sheet covers the Shuswap Highland in the
west and the Monashee Mountains in the east. This area is bordered to the east by Upper
Arrow Lake, to the north by Eagle River, and to the west by the eastern arm of Shuswap
Lake. The map sheet is entirely within the Omineca Belt and is dominated by rocks of the
Kootenay and Monashee terranes. The map area is underlain by four tectonostratigraphic
assemblages and various plutons that intrude them. Each assemblage has distinctive
lithologic and metamorphic characteristics, and three of them are separated by major shear
zones.The structurally deepest assemblage is the Monashee Complex, which
consists of Aphebian basement gneisses and a thin metasedimentary cover of Hadrynian to
Cambrian(?) age. The other three assemblages belong to a composite sheet of accreted
terranes and metamorphosed rocks of the North American pericratonic prism, which were
thrust eastward, along the Monashee decollement, over the Monashee Complex in the Mesozoic
to Paleocene. The Precambrian to Paleozoic(?) Shuswap Metamorphic Complex consists of
high-grade metamorphic rocks of the Selkirk allochthon that lie structurally beneath the
Okanagan-Eagle River detachment fault. Above the detachment are low to medium-grade
metamorphic rocks that are subdivided into the Eagle Bay Assemblage and the Mount Ida
Assemblage. The Eagle River Fault is a plastic-brittle normal fault that juxtaposes low to
medium-grade metamorphic rocks of the Eagle Bay and Mount Ida assemblages against the
Shuswap assemblage.
The Eagle Bay and Mount Ida assemblages lie on the western border of the map
sheet. The Eagle Bay Assemblage is correlative with Paleozoic strata of the North American
pericratonic prism. The Mount Ida Assemblage may also be correlative with Lower Paleozoic
strata, but alternatively could at least in part be exotic with respect to the North
American craton.
The Revelstoke map sheet is relatively under-explored and historically was not
an important mining area. Most of the prospecting was done before the turn of the century
and few mineral claims have been staked since then.
Stratabound zinc-lead and industrial minerals represent the predominant
mineralization in the map area. Disseminated and massive sphalerite and minor galena
occurs in quartzite, marble and calcsilicate gneiss units. The Kingfisher
deposit (082LNE007) contains indicated reserves of 1.67 million tonnes grading 2.6 per
cent zinc and 0.58 per cent lead. Diamond drilling at the Sherpa
prospect (082LNE024) intersected a mineralized interval ranging from 17 to 27 metres which
assayed up to 4.26 per cent zinc and 0.18 per cent lead across variable widths.
Kyanite, sillimanite, garnet and andalusite showings occur in high-grade
metamorphic rocks. Pegmatites host mica, beryl and tourmaline showings; radioactivity is
associated with some pegmatites. Quartzite beds within the metamorphic sequence are
possible silica sources while marble beds may provide dimension stone possibilities. A
horizon at the Kingfisher
Marble deposit (082LNE041) is estimated to contain 2 million cubic metres of
marble over a strike length of 500 metres and average thickness of 25 metres. Carbonatites
have been recognized and yield anomalous rare earth values.
One mine, the Revelstoke
Flagstone quarry (082LNE025), is seasonally operated. In the late 1940s, about
4032 tonnes of marl was produced from the Marlime
deposit (082LNE043).
