The Coronation Mountain occurrence is located on the north eastern flank of Coronation Mountain, approximately 3 kilometres west- north west of Coronation Lake.

The area is underlain by granodioritic intrusive rocks of the early to middle Jurassic Island Plutonic Suite.

Near the western boundary of the Ladysmith batholith of the Early to Middle Jurassic Island Plutonic Suite (formerly called the Island Intrusions), a large quartz vein occurs cutting the granodiorite. The vein strikes about 090 degrees and in places is 18 metres wide. The vein consists of coarse-grained quartz with pyrite, chalcopyrite ana little pyrrhotite and molybdenite.

In 1985, Canamin Resoures staked the Thriller claim after the discovery of a 91-metre adit that had been driven on the vein and a crosscut developed at the end. A program of geological mapping and prospecting was completed. The vein was not considered of sufficient grade to be of interest as an ore at the time.

A large mafic dyke carrying some chalcopyrite is reported to occur about 1.2 kilometres to the southeast of the adit, on the east side of a road.