The Zion showing is located 26 kilometres west-southwest of Vernon, adjacent to Shorts Creek.
In this area, Middle Jurassic granitic rocks intrude sedimentary and volcanic rocks of the Devonian to Triassic Harper Ranch Group. Eocene Penticton Group volcanic and sedimentary rocks occur nearby, overlying the older units.
A quartz vein, 0.4 metre thick, in Harper Ranch volcanic rocks carries free gold. Reported values range from 3 to 8 ($2-$5) grams per tonne gold (Minister of Mines Annual Report 1907, page 128).
By 1907, 50 metres of tunnels had been developed to explore the vein.