A 5 kilometre long, northeast trending band of limestone outcrops on both sides of the Zymoetz River, 1 to 5 kilometres west of its confluence with Dardanelle Creek. The band is bounded to the north by Jurassic aged granite and granodiorite and overlain to the south by basaltic to rhyolitic flows, tuff and breccia of the Upper Triassic to Lower Jurassic aged Telkwa Formation. The band is truncated to the northeast and southwest by several faults.

The deposit is comprised of a 15 to 30 metre thick bed of pure white, fossiliferous limestone that is conformably underlain by argillaceous limestone and overlain by 6 to 15 metres of impure limestone with large white fusilinids in a rose coloured matrix of carbonate and iron oxide. Eight samples of the pure limestone averaged 2.3 percent in insoluble residues, which contained mica, clay, silt and some quartz grains.