Drilling during 1981 into a long -nown aeromagnetic anomaly proved the presence of three carbonatite stocks, two of which probably coalesce. The area forms a distinct topographic depression which is covered by 30-90 m of glacial till. Associated with the carbonatite are ultramafic rocks described as "serpentinized olivine-calcite-phlogopite kimberlitic rocks and ultrabasic porphyry diatreme breccia" (Potapoff, in press). Fresh carbonatite averages 80% calcite or dolomite, 9% apatite, 10% magnetite, and pyrochlore, biotite, phlogopite and pyrite.
Potapoff, in press.
SAGE, R.P. 1979. Alkalic rocks carbonatite complexes. Miscellaneous Paper, Ontario Geological Survey, 90: 70-5.