33. BARRY-DAVID DEVLIN
Information acquired: 2025
BARRY-DAVID DEVLIN is an academic who published a paper in 1987 entitled Geology and genesis of the Dolly Varden silver camp, Alice Arm area, northwestern British Columbia. BARRY-DAVID DEVLIN published this work as part of a team: Devlin, Barry David. Here is a description of this work: The Dolly Varden camp, Alice Arm area, northwestern British Columbia, is characterized by stratiform and volcanogenic silver-lead-zinc-barite deposits in Early to Middle Jurassic calc-alkaline volcanic rocks of the Hazelton Group. These deposits, containing exceptional silver and significant base metal values, are in andesitic tuffaceous rocks, and occur typically as layers of quartz, carbonate, barite and jasper, with lesser amounts of pyrite, sphalerite and galena, and sparse chalcopyrite. Production from three deposits, the Dolly Varden, Northstar and Torbrit mines, totaled 1,284,902 tonnes of ore that averaged 484g silver per tonne, 0.38 percent lead and 0.02 percent zinc. The Hazelton Group is a thick, widespread assemblage of basaltic to rhyolitic volcanic flow rocks, their tuffaceous equivalents, and derived sedimenta.