The Purden Lake limestone deposit is located south of the Bowron River, approximately 10 kilometres northwest of Purden Lake.

Regionally, the area is underlain by limestone, slate, siltstone and argillite of the lower Cambrian Gog Group, pillow basalts, breccia and tuff with minor sediments of the Mississippian to Permian Antler Formation (Slide Mountain Group), which have been intruded by Paleogene to Neogene feldspar porphyritic rocks.

Locally, limestone is hosted in the Mississippian to Permian Triassic Antler Formation (Slide Mountain Group). The limestone units in the quarry strike 010 degrees with a shallow dip of 10 to 30 degrees. The limestone is cut by north-northeast–trending, subvertical-dipping faults that obliterate and disturb bedding planes.

Work History

Between 1986 and 1988, 20 000 tonnes of limestone were removed from a quarry.

In 2000, Graymont Western Canada Inc. completed a program of geological mapping and rock sampling on the area as the Pur 1-4 claims. Sampling of the Lower and Upper benches of the quarry yielded an average of approximately 97.8 and 98.0 per cent calcium carbonate, 0.8 and less than 1.0 per cent magnesium carbonate with 0.5 and less than 0.3 per cent silicon dioxide over 19.8 and 4.0 metres, respectively (Assessment Report 26515).