|Latitude & Longitude (WGS84):||62° 4' North , 112° 45' West|
|Latitude & Longitude (decimal):||62.06667,-112.75000|
|Köppen climate type:||Dfc : Subarctic climate|
The Thor Lake syenite complex is in the eastern half of the Blanchford Lake alkaline complex on the north shore and partially under the Hearne Channel of the Great Slave Lake, approx. 100 km east of Yellowknife. The complex is emplaced in the Grace Lake granite and represent one of latest stages of successive intrusions in the Blanchford Lake alkaline complex. It is roughly circular and is about 6.5 km in diameter. The age of the Thor Lake complex is 2097±10 Ma.
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69 valid minerals.
Rock Types Recorded
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Rock list contains entries from the region specified including sub-localities
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BADHAM, J.P.N. (1979) Geology and petrochemistry of lower Alphebian (2.4-2.0 Ga) alkaline plutonic and hypabyssal rocks in the East Arm of Great Slave Lave, Northwest Territories. Canadian Journal of Earth Sciences, 16, 60-72.
DAVIDSON, A. (1978) The Blanchford Lake intrusive suite: an Alphebian alkaline plutonic complex in the Slave Province, Northwest Territories. Geological Survey of Canada, Paper 78-1A, 119-127.
DAVIDSON, A. (1982) Petrochemistry of the Blanchford Lake complex near Yellowknife, Northwest Territories, Geological Survey of Canada, Paper 81-23, 71-79
SHEARD, E.R., WILLIAMS-JONES, A.E., HEILIGMANN, M., PEDERSON, C. AND TRUEMAN, D.L. (2012) Controls on the concentration of zirconium, niobium, and the rare earth elements in the Thor Lake rare metal deposit, Northwest Territories, Canada. Economic Geology and the Bulletin of the Society of Economic Geologists, 107(1), 81-104.
WOOLEY, A.R. (1987) In: Alkaline Rocks and Carbonatites of the World. Part 1: North and South America. Published by University of Texas Press, Austin. 49 57.
Feng, Y. & Samson, I.M. (2015) Replacement process involving high field strength elements in the T-zone, Thor Lake rare-metal deposit. Canadian Mineralogist 53, 61-82.