The Mistassini dike swarm is a 2.5 billion year old Paleoproterozoic dike swarm of western Quebec, Canada. It consists of mafic dikes that were intruded in the Superior craton of the Canadian Shield. With an area of , the Mistassini dike swarm stands as a large igneous province. See also Matachewan dike swarm References Dike swarms Igneous petrology of Quebec Paleoproterozoic magmatism