The Sunset Copper Star East occurrence is located at an elevation of approximately 200 metres on an east facing slope, approximately 1.5 kilometres east of Jasper Lake.

The area is underlain by a very thick, gently dipping to flat-lying sequence of Upper Triassic submarine volcanic flows of the Karmutsen Formation. Locally minor interflow sediments occur.

Locally, chloritic volcanics hosts stringer and disseminated covellite(?) and chalcocite(?) with malachite staining.

In 2018, Rich River Exploration Ltd. completed a program of rock, soil and silt sampling on the area as the Sunset Copper Star property. Two grab samples (32322 and 32323) assayed 0.581 and 1.410 per cent copper with 1.71 and 4.99 grams per tonne silver, respectively (MacIntyre, D. (2019-01-29): Technical Report - Sunset Copper Star Mineral Property).