The Breccia showing is located on a northern slope of Aaron Hill, near the head waters of Ootischenia Creek, roughly 6.4 kilometres east of Castlegar. The showing was discovered in 2009 by Swift Resources Inc. as a part of its Amazing Grace project. Previous work in the area has been centred on the Maud S. and Meister (MINFILE 082FSW325) showings 2.0 kilometres to the south east.

Regionally, the area is underlain by granite and granodiorite of the Late to Middle Jurassic Nelson Intrusions and small areas of volcanic rocks of the Lower Jurassic Elise Formation (Rossland Group).

Locally, the property covers a portion of the multi-phase Bonnington pluton, which has intruded sedimentary, volcanic and subvolcanic rocks of the Jurassic Rossland Group. These older rocks occur as embayments, pendants, and possible fault slices within the pluton, and are typically metamorphosed with relic textures preserved only locally. An east to southeast trending pendant of mafic volcanics and subvolcanic intrusive, belonging to the Rossland Group (Elise Formation), occurs in the central part of the property.

The most prominent structural feature on the property are late-stage (Eocene) faults. Large zones of intense alteration (sericitic, argillic, carbonate, silica) occur along northwest- trending normal faults, with gold-bearing quartz veins along and in the hangingwall of these structures.

The Breccia showing is a zone of quartz and limestone breccia with coarse galena and minor sphalerite mineralization, which occurs within a large area of pyroxene-garnet skarn. A sample from the vein returned 15.9 per cent lead and 401.2 grams per tonne silver (Assessment Report 31929).

Work History

Firestone ventures optioned the property in 2004 and in 2005 completed a program of prospecting, rock and soil sampling and geological mapping. In 2007 and 2008, Medallion Resources examined the property and completed a helicopter-borne mag-AeroTEM-radiometric survey and soil sampling. During 2009 through 2011, Cassidy Gold and Swift Minerals completed programs of prospecting, soil sampling, geological mapping, three diamond drill holes, totalling 147 metes, and 147 metres of trenching on the area. During 2012 through 2018, the area was prospected by B. Doyle. Later in 2018, Walcott Resources Ltd. completed a program of ground geophysical surveys on the area as the Cobalt Hill property.