The Middle Scud occurrence is located on the east side of a small unnamed glacier which is located approximately 5 kilometres east of the Scud River. The showing occurs at the contact of the Middle Scud Ultramafic Body (of the Middle to Late Triassic Polaris Plutonic Suite) near its contact with greenstone/greenschist metamorphic rock of the Upper Triassic Stuhini Group. The ultramafic body is mainly separated from the Hickman pluton by the Stuhini greenstone and is in contact with Lower Permian limestone of the Stikine Assemblage on its eastern boundary.

In this area, a ubiquitous plagioclase megacrystic, magnetite-rich quartz diorite phase occurs along the western margin of the Hickman pluton where it is in contact with the Stuhini greenstone. Diorites and hornblende gabbros of the mafic phase of the pluton occur to the east of the megacrystic phase.

Middle to Late Triassic plutons fall into two groups: small, Alaskan-type ultramafic bodies and larger calcalkaline plutons. Both intruded at shallow levels and are coeval with Stuhini Group volcanism. The ultramafic suite, known as the Polaris Ultramafic Suite includes the Gnat Lakes Complex, the Mount Hickman Ultramafic Complex and two smaller bodies discovered just before 1995 (Bulletin 95).

Mineralization consists of a small lens 20 centimetres wide by 75 centimetres long and 30 centimetres deep of massive argentiferous tetrahedrite which occupies a small fracture in pyroxenite. The fracture was traced for 6 metres and a grab sample from the massive lens contained 49.5 per cent copper and 223 grams per tonne silver (Assessment Report 589). Such fractures in the pyroxenites are commonly serpentinized.

In 1964, the property consisted of 20 mineral claims, BIK 117 to 136 inclusive, which were called the Middle Scud Group. These claims were staked on behalf of Silver Standard Mines Ltd. A program of mapping was carried out on the Middle Scud group by operator Asarco Exploration Co. of Canada, Limited.