The Anzac magnesite showing is located 800 metres southeast of the town of Clinton. Physiographically it is located near the edge of the Cariboo Plateau. Annual precipitation averages between 300 and 400 millimetres (EMPR Paper 1991-1).

The occurence is located on the slope on the east side of the Clinton Creek valley. Bedrock in the area includes marine sedimentary (ribbon chert, limestone and argillite) and volcanic rocks (basic flows and tuffs) of the Permian to Upper Triassic Cache Creek Group; Jurassic sedimentary rocks (chert pebble conglomerate, greywacke, shale and grit); and non-marine sediments (shale, sandstone, tuff, diatomite, conglomerate and breccias) of the Miocene Deadman River Formation.

"Small angular pieces of white and grey crystalline magnesite" (EMPR Annual Report 1918, page 229) were encountered in a "tunnel" driven in what is presumed to be overburden a "half mile" (800 metres) southeast of the town of Clinton. Small deposits of hydromagnesite (092P 072) occur in the valley bottom below the float occurrence.