Alkaline Rocks and Carbonatites of the World

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Brilund

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Occurrence number: 
031-00-120
Country: 
Canada
Region: 
Montreal area
Location: 
Longitude: -74, Latitude: 45.58

The Brilund pipe, which underlies a low, wooded hill, is about 150x100 m and cuts Potsdam sandstone. It has been extensively drilled (Gold and Marchand, 1969, Fig. 1_5.). The rock consists of poikilitic monticellite, with variable amounts of phlogopite, forsterite, melilite and calcite with accesory magnetite, garnet, apatite and perovskite.

References: 
GOLD, D.P. and MARCHAND, M. 1969. The diatreme breccia pipes and dykes, and the related alnoite, kimberlite and carbonatite intrusions occurring in the Montreal and Oka areas, P.Q. Part 1: The alnoite, kimberlite, and diatreme breccia pipes and dykes. In Geology of the Monteregian Hills (Ed. G. Pouliot). Geological Association of Canada - Mineralogical Association of Canada, Guidebook: 5-42
Fig. 61 Distribution of alkaline rocks in the area of Montreal.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith