Alkaline Rocks and Carbonatites of the World

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Kensington (Lac Kensington)


Occurrence number: 
Longitude: -75.83, Latitude: 46.5

The Kensington complex covers about 40 km2 and comprises five distinct phases of syenite, monzonite, diorite and pyroxenite, the distribution of which are shown by Corriveau (1985, Fig. 22.2) who also gives petrographic details. These rocks are not peralkaline, but Currie (1976a, p. 201) reports the presence of nepheline-bearing rocks along the eastern margin, and Corriveau (personal communication, 1985) says there is one outcrop containing nepheline.

Molybdenite has been mined from a pegmatite dyke (Corriveau, 1984, p. 306).
CORRIVEAU, L. 1984. Account of field observations on rock units and structural features of the syenitic complexes of the Mont-Laurier area, central metasedimentary belt of the Grenville Province. Paper, Geological Survey of Canada, 84-1A: 303-6. CORRIVEAU, L. 1985. Precambrian syenitic plutons, central metasedimentary belt, Grenville Province of Quebec. Paper, Geological Survey of Canada, 85-1A: 165-74. CORRIVEAU, L. personal communication, 1985. CURRIE, K.L. 1976a. The alkaline rocks of Canada. Bulletin, Geological Survey of Canada, 239: 1-228.
Fig. 1_58 Distribution of alkaline stocks in southwest Quebec.
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