The small Red Cloud quarry is located on the west side of the Kootenay River, north from Canal Flats.

Quarrying has taken place on a band of quartzite of the Middle and/or Upper Ordovician Mount Wilson Formation (formerly the Wonah Formation). The band strikes northeast with dips of 40 to 50 degrees west. The band is 18.3 to 21.3 metres wide at the quarry. Wallrock consists of shale and limestone.

The quartzite is a hard white rock with grey streaks and occasional yellowish sandy patches. It is commonly fractured at intervals of 8 centimetres or greater.

The only record of production is a small trial shipment sent in 1967 when the quarry measured 30 by 3 by 3 metres. A grab sample of loose muck pieces taken in 1967 assayed 98.56 per cent SiO2, 0.65 per cent Al2O3, 0.12 per cent total Fe, and 0.05 per cent CaO (Open File 1987-15).