The Porphyry and Iron Hill property is located 1 kilometre northwest of the confluence of Canyon and South Canyon creeks, about 8 kilometres west-southwest of Golden. Early work comprised adits and crosscuts totalling about 90 metres.
Bedrock geology consists of Lower Cambrian quartzite and slate cut by felsite dikes (the age is inferred from Geological Survey of Canada Open File 481). A flat-lying quartz vein (10 to 30 degree dips) from 0.7 to 1.8 metres wide is hosted in quartzite and is mineralized with chalcopyrite which attains widths of 10 centimetres to 1 metre.