The exact location of the Ben Lomond showing is not known. It is assumed to be on the Ben Lomond Crown-granted claim (Lot 1487), about 1.7 kilometres north-northwest of the confluence of Bitter Creek with the Bear River, 14 kilometres north of Stewart.

A northwest trending conspicuous zone of shearing traverses the claims (Geological Survey of Canada Map 216A). The shearing cuts generally north striking, west dipping Lower Jurassic Unuk River Formation (Hazelton Group) andesitic volcanics. These 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 (104A 044) located 1350 metres south (Assessment Report 759).

Mineralization comprises pyrite and chalcopyrite in rusty areas and bands in the volcanic rocks (Geological Survey of Canada Memoir 32 and 175) and is assumed to be hosted in quartz veining, similar to the Dundee showing (104A 074) located 738 metres south.

Work History

In 1910 and 1911, the International (Portland) Mining Co. Limited held the Mammoth group of eight claims, including the Ben Lomond claim, and carried out tunnelling and open cutting. No further work has been reported. In 1965, Canex Aerial Exploration conducted geological mapping on the adjacent B.G. claims (104A 042, 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.