A roadcut along the John Hart Highway (Highway 97), 1 kilometre northwest of the summit of Solitude Mountain exposes a 46-metre thick section of fine-grained, black limestone of the Mississippian Prophet Formation. This section lies on the west flank of a northwest trending syncline. The rock displays a well developed cleavage. In the upper most portion of the section the limestone becomes interbedded with chert. A sample taken across the 46-metre section contained 38.2 per cent CaO, 1.94 per cent MgO, 25.5 per cent insolubles, 0.70 per cent R2O3, 0.91 per cent Fe2O3, 0.01 per cent MnO, 0.03 per cent P2O5, 0.33 per cent sulphur, 32.6 per cent ignition loss and 0.09 per cent water (Minister of Mines Annual Report 1957, page 86).

Limestone of the same formation is exposed on the east side of Solitude Mountain along the east flank of the syncline. A cut along the highway, 3.7 kilometres west of the previous exposure, displayed thickly bedded, fine-grained, black, siliceous limestone. A sample across 61 metres of road cut contained, 20.8 per cent CaO, 2.94 per cent MgO, 47.9 per cent insolubles, 1.22 per cent R2O3, 2.09 per cent Fe2O3, 0.02 per cent MnO, 0.16 per cent P2O5, 1.40 per cent sulphur and 24.7 per cent ignition loss (Minister of Mines Annual Report 1957, page 86).