The Southeastern Silverstream occurrence is located on the north side of Marshall Creek, approximately 500 metres northwest of its junction with Brett Creek.

The area is underlain by a sequence of imbricated chert, intermediate volcanics, gabbro, limestone, blueschist and clastic rocks of the Bridge River Complex ranging in age from Permian to Jurassic, which are intruded by felsic dikes and numerous dikes of serpentinite and their altered equivalents.

Locally, a series of parallel shears host gold mineralization.

The area was originally staked in 1987 and preliminary exploration programs, consisting of geological mapping, soil and rock sampling, ground geophysical surveys and trenching were completed in 1996. This work identified two anomalous zones, approximately 1 kilometre apart, known as the Western and Southeastern zones. From 2005 to 2007, Gray Rock Resources completed programs of prospecting and 7 diamond drill holes, totalling 1361.05 metres, on the Silver Stream property.

In 1991, sampling of the shear zones assayed up to 16.42 grams per tonne gold (Assessment Report 21841).