A deposit of limestone outcrops predominantly to the west of Kwanika Creek, just northeast of Tsayta Lake, 135 kilometres northwest of Fort St. James.

The deposit lies within a 200 kilometre long northwest-trending belt of massive Permian-Pennsylvanian limestone with minor chert and argillite of the Carboniferous to Jurassic Cache Creek Complex. The belt is approximately 3.8 kilometres wide along the west side of Kwanika Creek. To the east, the limestone is separated from Middle Triassic to Lower Jurassic Takla Group andesitic to basaltic volcanics by the Pinchi fault zone. Overlying chert, argillite and greenstone (andesite) of the Cache Creek Complex outcrop to the west.

The limestone is variably dolomitized along the Pinchi fault zone due to hydrothermal alteration. A sample of massive, buff- coloured limestone exposed near the Pinchi fault on the lower part of Kwanika Creek analysed 34.03 per cent CaO, 17.97 per cent MgO, 0.38 per cent insolubles and 1.59 per cent Fe203+Al2O3 (Geological Survey of Canada Memoir 252, page 36, Sample 5). A second sample of limestone from a ridge west of Kwanika Creek analysed 55.41 per cent CaO, 0.31 per cent MgO, 0.07 per cent insolubles and 0.15 per cent Fe2O3+Al2O3 (Geological Survey of Canada Memoir 252, page 36, Sample 6).