The Alexander Creek FSR (High Rock) phosphate occurrence is located along the Alexander Creek Forest Service Road, on the west side of Alexander Creek and approximately 4.8 kilometres north-northeast of the road’s junction with the Crowsnest Highway.

Regionally, the area is underlain by a series of generally north-trending sedimentary rocks including dolomitic carbonate rocks of the Mississippian Etherington, Mount Head and Livingstone Formations (Rundle Group) and Pennsylvanian to Permian Rocky Mountain Group, fine clastic sedimentary rocks of the Triassic Spray River Group, undivided sedimentary rocks of the Jurassic Fernie Formation and undivided sedimentary rocks of the Jurassic to Cretaceous Kootenay Group.

Locally, pelletal phosphorite is contained in two beds separated by phosphatic shale at the base of the Jurassic Fernie Group. The top of the phosphate horizon is marked by a thin yellowish weathering cherty limestone bed. The phosphate generally strikes north with shallow to moderate dips to the west. Thrust faulting complicates the distribution of the phosphate, causing the repetition of beds at some localities and causing the same beds to disappear in other locations.

In 2022, a rock sample (557) of Fernie Formation phosphorite yielded 25.55 per cent P2O5 and 0.018 per cent yttrium (Assessment Report 40708).

Work History

In 1989, Formosa Resources conducted a program of prospecting, geological mapping and rock sampling on the area as the High Rock 1-4 claims. In 2022, Fertoz International Inc. conducted a program prospecting and rock sampling on the area as the Alexander Creek property.