The Dolly occurrence is located 2.25 kilometres northeast of Mount Basnett, south of the Finlay River, about 320 kilometres north of the community of Smithers.

The regional geology consists of a northwest trending belt of Lower Cambrian Atan Group and Cambrian to Ordovician Kechika Group rocks within the Omineca Range and the Finlay River area. Limestone, phyllite, and calcareous shale comprise lithologies of the Kechika Group, and limestone, siltstone, dolomite, quartzite, shale, sandstone and conglomerate comprise the Atan Group. The general trend of these formations is 345 to 350 degrees with steep dips to the southwest. Contacts between units are fairly sharp.

The Dolly showing is underlain by a 103-metre thick dolomite bed striking northwesterly and dipping southwesterly. A series of quartz veins cut the dolomite bed hosting the showing. The veins strike 185 to 210 degrees and dip steeply west. The veins vary in width from 0.2 to 13.0 metres and are mineralized with galena, tetrahedrite and minor pyrite (Assessment Report 8462).

The only assay information found for the Dolly showing was from Assessment Report 2471, where samples obtained by E. Bronlund (1948) analyzed 20 per cent lead, 2.8 per cent copper and 617 grams per tonne silver. Widths reported are of the order of several inches.

In 1951-52, mineralized quartz veins on the Dolly and Bas claims were found by E. Bronlund. In 1968, Union Carbide held claims over the Dolly showings and in 1969 Highplain Exploration Ltd. held claims over mineralized shear zones along the Mount Basnett ridge. In 1969, a brief field study was conducted by C.E. Zimmerman on the RPM and REV group of claims (094E 011), located 1.7 kilometres southwest of the Dolly showing, accompanied by V. Strandberg and G. Barton of Highplain Exploration Ltd. The property examination was conducted fairly late in the season and much of the area was covered by snow which blanketed the upper area where the major mineral showings are located.

In 1980, Nolan Resources Ltd. acquired the Dolly and Bas claims and completed a combined helicopter-borne electromagnetic and magnetic survey that was flown over the Dolly claims and part of the Bas claims.