The Stanmack (Ole Bull) occurrence is located in the headwaters of McCulloch (Lund) Creek at an elevation of approximately 1865 metres.
The area is underlain by metasedimentary rocks interlayered with mafic volcanic rocks of the Cambrian to Devonian Index Formation (Lardeau Group). The metasediments consist of quartzites, schists, phyllites, calcareous schists, carbonates and fine clastic rocks. The metavolcanics are tholeiitic flows and mafic tuffs metamorphosed to greenstone and chloritic phyllite. The rocks exposed are correlated to Hoy's (Bulletin 71) metavolcanic-phyllite division and quartzite schist division of probable lower Paleozoic Hamill Group and upper Proterozoic Horsethief Creek Group (Assessment Report 11860).
Phase 2 and phase 3 folds are developed in an inverted stratigraphic panel. Predominant schistosity is east to southeast with dips commonly at 20 degrees east.
Locally, in the Ole Bull shaft area, calcareous phyllites host two sets of quartz veins, referred to collectively as the no.1 vein. The commonly mineralized, discordant veins strike 10 to 20 degrees and dip 70 to 85 degrees west. They range from 0.15 to 4 metres in width. Barren veins, concordant with bedding, although with steeper dips, are up to 3 metres thick. The erratically mineralized veins are composed essentially of milky quartz and ankerite with minor pyrite and green chrome mica and lesser pyrrhotite, scheelite, chalcopyrite, galena, free gold and possible tetrahedrite. The gold occurs both in the quartz veins and in the country rock immediately adjacent to the auriferous veins.
Three other veins (A, B and no.2) are reported to the north- north west. The A and B veins, located approximately 200 metres up-slope to the north west and exposed by former trenches, consist of quartz veins, varying from 0.3 to 0.6 metre wide, hosting minor pyrite and galena. The veins strike from 20 to 25 degrees east and dip 65 to 70 degrees to the north west. The no. 2 vein is located approximately 400 metres north- north west of the no.1 vein and consists of an adit exposing narrow, 5 to 18- centimetre wide, quartz veins hosting minor pyrite and scheelite.
In 1942, a sample from the no.1 vein of the Ole Bull shaft yielded 9.1 per cent tungsten tri-oxide, while a high- grade dump sample yielded 1.7 grams per tonne gold (Property File - Newmarch [1942-01-01]: Plan Map of the Ole Bull Tungsten Showings). A sample from the no.2 vein yielded 5.2 per cent tungsten tri-oxide (Property File - Newmarch [1942-01-01]: Plan Map of the Ole Bull Tungsten Showings).
In 1983, a grab sample in the Ole Bull adit gave 371.0 grams per tonne silver (Assessment Report 11860).
The area has been explored since the discoveries of placer gold in the area in 1865 and gold-bearing quartz veins in the headwaters of McCulloch Creek in 1885. During 1896 through 1900, the Ole Bull and Orphan Boy (MINFILE 082M 167) groups were developed including a 7.5-metre deep shaft on the no.1 vein, a 5.4-metre adit on the no.2 vein and a number of trenches on the A and B veins of the Ole Bull claim.
