a mining center in central Canada, in the province of Ontario. Porcupine is situated at Porcupine Lake, near a gold ore deposit, discovered in 1909. The deposit is associated with high-temperature hydrothermal deposits of gold-arsenopy-rite and is located between Precambrian granitic massifs and metamorphic rocks. Approximately one-half of the gold mined in Canada is obtained at Porcupine. Silver-copper-zinc ores are also mined in the region—at Kidd Creek and elsewhere.
a river in Canada and Alaska, a right tributary of the Yukon. The Porcupine measures 953 km long and drains an area of 78,000 sq. km. Originating in the Nahanni mountains of the Mackenzie Mountains it is fed primarily by snow. There is high water in June and July. The Porcupine is frozen from October through April or May. The lower course is navigable by small vessels.