In the vicinity of Cape Aillik and Cape Makkovik on the Labrador coast and on offshore islands occur numerous gently dipping dykes (? cone sheets) possibly related to a centre beneath Aillik Bay. The dykes are generally less than 1.5 m thick and vary from ultramafic through carbonated varieties to dykes almost wholly composed of carbonate. The ultramafic dykes consist of phlogopite, augite and olivine in a fine grained carbonate-rich matrix. To some varieties the name aillikite has been given. Syenitic dykes of nepheline, albite, pyroxene and amphibole are also found.
CURRIE, K.L. 1976a. The alkaline rocks of Canada. Bulletin, Geological Survey of Canada, 239: 1-228.
KRANCK, E.H. 1953. Bedrock geology of the seaboard of Labrador between Domino Run and Hopedale, Newfoundland. Bulletin, Geological Survey of Canada, 26: 1-45.