Alkaline Rocks and Carbonatites of the World

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Nachicapau Lake

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Occurrence number: 
031-00-149
Country: 
Canada
Region: 
Labrador
Location: 
Longitude: -68.02, Latitude: 56.07

A cancrinite-arfvedsonite pegmatite occurs on two small islands in a narrow arm along the north side of Nachicapau Lake. Arfvedsonite crystals up to 2x0.2 cm lie in a groundmass of cancrinite and very fine grained magnetite. Analyses of the rock, cancrinite and arfvedsonite are available (Dressler, 1981, p. 1761). Possibly related to the Castignon Lake occurrence (No. 150) which is some 40 km further west.

References: 
DRESSLER, B. 1981. Post-tectonic igneous rocks: north-central Labrador geosyncline. Canadian Journal of Earth Sciences, 18: 1758-62
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith