The Silver Chord showing is located on the Dak River, about 8.5 kilometres northeast of Alice Arm. The area was sporadically but extensively investigated for zinc between 1919 and 1967.

The region is underlain by an assemblage of volcanics and sediments comprising the Upper Triassic Stuhini Group and the Lower Jurassic Hazelton Group. This assemblage has been folded into a north-northwest trending anticline (Mount McGuire anticline) and regionally metamorphosed to greenschist facies.

The showing, consisting of one quartz vein and one quartzose zone/vein, is hosted in north striking Stuhini Group argillite and argillaceous quartzite crosscut by narrow lamprophyre dikes. The vein strikes north, dips vertically and is of variable width. On the surface, a 1.0 metre wide, 10 metre long shoot of sphalerite mineralization is exposed. The vein displays variable sulphide mineralization in a short adit.

The quartzose zone/vein, about 100 metres west, strikes north and dips steeply west. The zone is at least 150 metres long and occurs as a zone of quartz and calcite veins and stringers in brecciated country rock. The zone, 0.3 to 7.6 metres wide, is associated with a narrow lamprophyre dike. At its widest point the zone consists of 80 per cent country rock and 20 per cent vein material. As the zone narrows, the vein content increases as the individual veins and stringers coalesce, resulting in a distinct vein free of wallrock in the narrower portions of the zone. Mineralization comprises variable amounts of sphalerite and minor pyrite and galena. Narrow streaks in this vein/zone are reported to contain high silver values (Minister of Mines Annual Report 1927, page 73).

In 1927, two tunnels had been driven along the vein and a small amount of crosscutting completed. By the end of September of the year, the No. 1 tunnel had been advanced to a total length of 70 metres and short crosscuts driven at 24 metres and 41 metres from the portal. The first 18 metres of the tunnel developed shoots of zinc ore from 0.6 to 1.2 metres wide. About 30 metres lower in elevation, at 393 metres elevation, a second tunnel is being driven which was in 11 metres (ca. 1927). The vein in this tunnel is strong but not very well mineralized.