Limestone of the Middle Cambrian Nelway Formation forms a 137 metre high hill on the north end of Lots 9056 and 9280, 2 kilometres northeast of Nelway. A dolomite bed striking 137 degrees and dipping 35 degrees southwest outcrops along the north side of the hill. The dolomite thickens from a metre on the northwest corner of the hill to a hundred metres 0.4 kilometres to the west. Much of the limestone is underlain by this dolomite bed.

Diamond drilling encountered white to dark grey, occasionally argillaceous, limestone beds with some interbedded argillite. Pyrite was found to be negligible. Hole 1 drilled from the top of the hill in an easterly direction at minus 40 degrees intersected 29 metres of white, granular limestone starting at a depth of 68.58 metres. A sample taken from this section at 82.30 metres contained 55.6 per cent CaO, 0.4 per cent MgO and 0.6 per cent insolubles (Minister of Mines Annual Report 1955, page 95, Section 6). This hole bottomed in 15 metres of dolomite starting at 133.5 metres depth. A sample of the dolomite taken at 136.55 metres contained 31.0 per cent CaO, 21.4 per cent MgO and 0.80 per cent insolubles (Section 9).

Purex Lime Company attempted to develop the limestone deposit. The company drilled two holes in 1955.