The El Paso showing is 500 metres northeast of Siwash Creek, 4.2 kilometres northwest of the creek's confluence with Galena Creek and 40 kilometres north-northeast of Princeton.

Two adits expose a vein of banded quartz, 0.46 to 1.2 metres wide, in andesite of the Upper Triassic Nicola Group, 300 metres northwest of the contact with granite and granodiorite of the Middle Jurassic Osprey Lake batholith. The vein strikes 040 to 065 degrees and dips 40 to 65 degrees southeast. It has been traced in the two adits over a strike length of 24 metres and downdip for 34 metres.

The wallrock is brecciated and carbonatized, and the vein itself is brecciated and healed with calcite veinlets. Mineralization consists of arsenopyrite, pyrite, sphalerite and galena.

Two parallel, vein-like zones of silicification and pyritization were intersected in one adit and a drillhole 30 metres south of the quartz vein. The two zones are 6 metres apart and 3 to 6 metres wide.