A long, narrow complex 6-700 m in length with a maximum width of about 50 m, lies conformably amongst schists and gneisses of the Wolverine complex, which are fenitized close to the complex. Carbonatite occurs as sodic pyroxene and biotite-rich types; in both the carbonate is calcite. A little plagioclase, microcline, blue alkali amphibole, apatite and pyrochlore occur. The fenites contain sodic pyroxene and amphibole and are intensivelly fractured with sheared contacts against the carbonatite.
ROWE, R.B. 1958. Niobium (columbium) deposits of Canada. Economic Geology, Geological Survey of Canada, 18: 1-108.