The exact location of the Dundee showing is not known. It is assumed to be on the Dundee Crown-granted claim (Lot 1491), about 1 kilometre north-northwest of the confluence of Bitter Creek and the Bear River, 12 kilometres north of Stewart.

A northwest trending conspicuous zone of shearing traverses the claims (Geological Survey of Canada Map 216A) and cuts generally north striking, west dipping Lower Jurassic Unuk River Formation (Hazelton Group) andesitic volcanics. The volcanic rocks are intruded by stocks of Jurassic(?) granodiorite (Bulletin 58; 63). Several north to north-northwest trending lamprophyre, quartz diorite or quartz monzonite, and augite-hornblende-feldspar porphyry dikes have been mapped on the Mammoth claim group (Assessment Report 759).

A band of argillites, intercalated with the volcanics, is seamed with quartz veins over a width of 3 metres. Mineralization comprises sparse pyrrhotite, galena, sphalerite and pyrite. The argillite band is the same one that hosts the mineralization on the Mammoth claim (Lot 1488, 104A 044) located 614 metres south (Geological Survey of Canada Memoir 32; 175).

Work History

In 1910 and 1911, the International (Portland) Mining Co. held the Mammoth group of eight claims, including the Dundee claim, and carried out tunnelling and open cutting. In 1965, Canex Aerial Exploration conducted geological mapping on the adjacent B.G. claims (Aztec group); this work included parts of the Mammoth group. In 1984, Tournigan Mining Explorations Ltd. carried out geological mapping and a stream sediment survey in the area. In 2017 and 2019, Bonanza Mining Corp. completed programs of prospecting, geochemical (rock and soil) sampling and ground geophysical (induced polarization, magnetic and gravity) surveys on the area as the MC property.