The Wood opal occurrence is located along the southern side of Cain Creek, approximately 600 metres south east of its junction with the Salmon River. The claims were staked in 1995 after the discovery of agate and white common opal float. Sampling and geological mapping was completed over the next two years.

The claims are underlain by a basal sequence opal bearing clast- and matrix- supported lahars and sediments of the Eocene Kamloops Group.

Locally, a clast- supported basaltic lahar with abundant amygdules occurs and contains fillings of agate, yellow sugary zeolite and one occurrence of rare precious, white to grey, translucent to opaque opal with a bright green play of colour that infills a cavity along a microfracture. Fractures within this outcrop strike 030 degrees and dip 75 degrees to the east (Assessment Report 25410).