A vertically dipping bed of limestone outcrops along Highway 3 on Christina Lake, 0.8 kilometres north of the Fife cut off road and continues north-northeast up the hillside for at least 3.2 kilometres. The limestone has been correlated with the Pennsylvanian to Permian Mount Roberts Formation or (according to the Geological Survey of Canada Open File 1969) an Ordovician to Devonian unnamed unit. The bed thickens from 27 metres along the highway to 240 metres, 1.5 kilometres northeast.

The bed contains medium to fine grained, bluish grey to white, banded limestone that is intensely fractured and sheared. Nodules and lenses of blue chert and streaks of rusty and siliceous limestone contaminate this deposit. The siliceous limestone is more common near the contacts with the enclosing volcanics. Contorted mafic dykes intrude the limestone. Two samples analyzed as follows (in per cent):

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                                  Sample A      Sample B
                  CaO              52.78          51.0
                  MgO               0.30           0.3
                  Insolubles        4.64            -
                  SiO2               -             6.5
                  R2O3              0.20            -
                  Al2O3              -             0.1
                  Fe2O3             0.17           0.3
                  MnO               0.02            -
                  P2O5              0.016           -
                  Sulphur           0.02            -
                  Ig. Loss         41.94          41.5
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Sample A was taken across a 27.4 metre wide face of the southern quarry on the east side of the C.P. Railway track (Minister of Mines Annual Report 1959, p. 173, Sample 6). Sample B is a representative analysis of the limestone quarried in the early 1940's (CANMET Report 811, p. 197).

Limestone was produced from four major quarries and several smaller quarries and glory holes on both sides of the C.P. Railway, 0.8 to 1.6 kilometres north of Fife, between 1911 and 1957. A total of 1.6 million tonnes of limestone were quarried during this time. The limestone was used entirely for flux at Cominco's smelter in Trail.