The Hugo, just south of Seymour Narrows on Quadra Island, contains an irregular vein of quartz which has a maximum width of 15 centimetres. The quartz is arranged in radiating crystal aggregates, between the crystals of which are small grains of chalcocite and bornite (Geological Survey of Canada Memoir 23, page 128). The Geological Survey of Canada Open File Map 480 shows the area to be underlain by Upper Triassic Karmutsen Formation volcanic rocks.