The Sunrise showing is located on the south side of Wilauks Mountain, about 6.0 kilometres east-northeast of Alice Arm. The area has been extensively explored for zinc mineralization.
The region is underlain by an assemblage of volcanics and sediments comprising the Upper Triassic Stuhini Group, the Lower Jurassic Hazelton Group and the Middle Jurassic to Upper Cretaceous Bowser Lake Group. This assemblage has been folded into a north-northwest trending anticline (Mount McGuire anticline) and regionally metamorphosed to greenschist facies.
The showing is hosted in Stuhini Group argillite, greywacke and basaltic conglomerate which have been intruded by numerous hornblende and feldspar porphyritic dikes.
The main mineralized zone, the Banded vein, is developed along a fault that follows Sunshine Creek. The Banded vein, 1.0 to 4.6 metres wide, has been traced for about 366 metres, strikes 120 degrees and dips 50 to 60 degrees east. The zone consists of quartz and calcite veins and stringers, up to a metre in width, infilling fractures and shears in brecciated argillite. The wider veins contain irregular, discontinuous pods, lenses and streaks of sphalerite and minor galena and pyrite. A 3.0 metre chip sample taken across the main showing assayed trace gold, 13.7 grams per tonne silver, nil lead and 8.8 per cent zinc (Minister of Mines Annual Report 1927, page 72). A 354 metre long adit was driven in an attempt to intersect the downward projection of the zone but failed to encounter any significant zinc mineralization.
A second vein or zone, extends southeastward for 100 metres along Sunshine Creek from the widest point on the Banded vein. This vein, 0.6 to 1.2 metres wide at its south end and wider at the north end, trends west-northwest at an angle to the Banded vein. It is reported to be well mineralized with sphalerite.
A third vein, the Keely vein, occurs 244 to 274 metres to the west of, and parallel to, the Banded vein. It varies from 0.3 to 1.2 metres wide and is reported to contain moderate quantities of zinc (Minister of Mines Annual Report 1927, page 72).