Ilimaussaq intrusive complex

The Ilimaussaq intrusive complex is a large alkalic layered intrusion located on the southwest coast of Greenland.

It is the type locality of agpaitic nepheline syenite and hosts a variety of unusual rock types.

[1] The complex is noted for a wide variety of rare minerals and is the type locality for thirty minerals, including: aenigmatite, arfvedsonite, sodalite, eudialyte and tugtupite.

[2] The complex has an areal extent of 8 by 17 km and an exposed thickness of 1700 m. The complex includes Kvanefjeld, a uranium deposit and a large reserve of rare-earth elements, zirconium, niobium and beryllium.

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