Alkaline Rocks and Carbonatites of the World

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Schryburt Lake

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Occurrence number: 
031-00-047
Country: 
Canada
Region: 
Ontario
Location: 
Longitude: -89.05, Latitude: 52.05

This occurrence gives a strong, approximately circular aeromagnetic signature some 5 km in diameter. It has been extensively drilled, which has indicated the intrusion to be principally carbonatite consisting of varying amounts of calcite, mica, amphibole, magnetite, apatite and accessory perovskite, fluorite, pyrochlore and sulphides. Pure apatite rocks and bands of magnetite rock 0.5 m in thickness are present. The granite gneisses around the intrusion are fenitized.

Economic: 
It has been drilled as a pyrochlore prospect. Apatite and magnetite-rich rocks are present.
References: 
FERGUSON, S.A. 1971. Columbium (niobium) deposits of Ontario. Mineral Resources Circular, Ontario Department of Mines and Northern Affairs, 14: 1-58. HEINRICH, E.W. 1966. The geology of carbonatites. Rand McNally, Chicago. 608 pp
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith