Galena, sphalerite and pyrite occur as disseminations, as irregular veins with barite, and with barite in vugs and cavities in massive to thin bedded limestone of the Middle to Upper Cambrian Jubilee Formation. Breccia zones with angular clasts of dense dolomite and limestone in a granular carbonate matrix that contain disseminated sulphides and numerous barite and sulphide-filled vugs is also present.

Drilling in 1974 intersected grades of 12.16 per cent and 16.92 per cent barite across widths of 18.6 and 10.7 metres, respectively (Buckley, R.A. 1976).

A few narrow barite veins are present in the overlying slates of the Upper Cambrian to Middle Ordovician McKay Group.

Art Louie holds the area as the Legacy claims. WWC Consulting Ltd. optioned the claims in 1998 and drilled 4 holes totalling 197 metres.

On Jubilee Mountain west of Spillimacheen, W.W.C. Consulting Ltd., an exploration subsidiary of Hydrotech Dynamics Ltd., continued to evaluate its optioned vein barite prospect. In 1999, the company drove two short exploration adits and shipped a few thousand tonnes of barite ore to a mill, which is owned by its parent company, at the Elkhorn barite property on Madias Creek south of Windermere. No further mining was done in 2000 but an aggressive program of surface diamond drilling tested several other veins and breccia zones on the property. A jig concentrator is being constructed at the mine site.

From 2001 to 2003 (inclusive) , Tiger Ridge Resources Ltd. continued underground development and surface exploration drilling on its Jubilee Mountain barite project. In these three years, Tiger Ridge drilled 3869 metres in 52 holes. They also completed 55 metres of drifting and 22 metres of raising in 2002. A 5556 tonne bulk sample was mined in 2001 and 1000 tonne bulk sample was taken in both 2002 and 2003. No work was reported for 2004 and 2005.