Thinly bedded chert and argillite of the Mississippian to Jurassic Bridge River Complex (Group) are cut by an albitite porphyry dyke which is traversed by quartz stringers. Several fissures dip steeply west and strike southwest across the sediments. Quartz veins varying from several centimetres to one metre in width are nearly continuous within the fissures for about 75 metres. Shorter discontinuous quartz bodies also occur. Sulphides in the veins, pyrite and arsenopyrite, are scanty, carrying mostly low gold values with local highs. Minor free gold is associated with arsenopyrite.