stripes
Occurrence number:
031-00-031
Country:
Canada
Region:
British Columbia
Location:
Longitude: -118.17, Latitude: 52
Carbonatite:
No
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.
References:
CURRIE, K.L. 1976a. The alkaline rocks of Canada. Bulletin, Geological Survey of Canada, 239: 1-228.
Wheeler, 1965.
Map:
Fig. 1_20 The Kinbasket Lake and Trident Mountain bodies (after Wheeler, 1965, Map 12-1964 and Currie, 1976a, Fig. 75).
Location: