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. 1_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. 58 Distribution of alkaline stocks in southwest Quebec.
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