The Brenda North A (TR09-01) occurrence is located in the western headwaters of Trepanier Creek, approximately 320 metres north of Highway 97C. The Mob (MINFILE 092HNE294) occurrence is located approximately 800 metres to the east.

The area is underlain by porphyritic quartz diorite of the Early Jurassic Pennask Batholith, locally known as the Brenda stock.

Locally, as exposed by trenching, granodiorites host a 25-centimetre wide shear zone, comprised of blue-green clay gouge and limonite alteration, containing fragments of broken quartz veins and disseminated pyrite. This structure was stripped along a length of 27 metres. Cross trenches have cut the east-west–trending structure at intervals of 30 to 40 metres, extending the known strike length to 100 metres. Mineralized quartz veins have also been exposed up to 30 metres to the north of, and parallel to, the main structure.

In 1991, a float sample (PEN91-R15) from the area yielded 0.95 gram per tonne gold (Assessment Report 22304).

In 2009, several samples across this zone, from trench Tr09-01, assayed greater than 20 grams per tonne gold up to 39.2 grams per tonne gold over a 25-centimetre width and 71.4 grams per tonne gold with 24.4 grams per tonne silver over a 10-centimetre width. A grab sample (Tr09-01-R001) of quartz vein material assayed 187.5 grams per tonne gold (Assessment Report 32070).

A second area of mineralization is located near Highway 97C, approximately 400 metres south of the previous zone, and comprises narrow, 1- to 5-centimetre wide, quartz-pyrite veins in a propylitic- and potassic-altered granodiorite.

In 1996, a chip sample (P96-R2) from this zone yielded 0.12 gram per tonne gold and 62.9 grams per tonne silver (Assessment Report 25043).

A third area of anomalous mineralization is reported approximately 1.3 kilometres south-southwest of the main occurrence and comprises an east-trending, 0.3-metre wide pyritic quartz vein with limonite staining.

In 1991, a chip sample (PEN91-R26) from the vein yielded 0.26 gram per tonne gold and 3.9 grams per tonne silver over 0.22 metre (Assessment Report 22304).

Work History

In 1970, Arrow Inter-America completed an airborne magnetic survey, totalling 752 line-kilometres, on the area as the Tic and Toc claims.

Geological mapping and soil sampling of the occurrence was completed by Brenda Mines Ltd. in 1981.

In 1987, Brenda Mines Ltd. completed a program of geological mapping, soil sampling, ground magnetic and induced polarization surveys and drilling on the area as the North Brenda (NB claims) property.

The area was re-staked as the Pen claims by Fairfield Minerals Ltd. in 1990, and programs of prospecting and geochemical (soil, silt and rock) sampling were completed during 1991 through 1996.

During 2006 through 2012, Bitterroot Resources completed programs of rock, silt and soil sampling, geological mapping, trenching, 147.6 line-kilometres of ground magnetic surveys and a 66.2 line-kilometre ground induced polarization survey on the area as the North Brenda property.