Alkaline Rocks and Carbonatites of the World

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Trident Mountain


Occurrence number: 
British Columbia
Longitude: -118.17, Latitude: 52

Nepheline syenite gneiss occurs in the core of a recumbent nappe, where it forms a conformable lenticular body with the central thickest portion high on Trident Mountain. The gneiss, in addition to nepheline, includes perthitic K-feldspar, albite, biotite and aegirine.

CURRIE, K.L. 1976a. The alkaline rocks of Canada. Bulletin, Geological Survey of Canada, 239: 1-228. Wheeler, 1965
Fig. 20 The Kinbasket Lake and Trident Mountain bodies (after Wheeler, 1965, Map 12-1964 and Currie, 1976a, Fig. 75).
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith