The Marg East area is underlain by Early Jurassic granodiorite which has intruded Upper Triassic volcanics and sediments of the Stuhini Group. A roof pendant of volcanic breccia about 600 metres long and 300 metres wide extends northeast from Dokdaon Creek. The breccia clasts vary from felsic to rhyolitic. Eocene north trending dykes of felsite to feldspar porphyry cut the granodiorite and volcanic breccia. These dikes have been dated at 49.7 +/- 1.7 Ma (Fieldwork 1988). Later east trending dikes of fine-grained diorite and diabase cut all other rocks.

Chalcopyrite is hosted by two faults that occur near the contact of the granodiorite and volcanic breccia. These faults have undergone intense bleaching, silicification and pyritization. The faults themselves lie within an envelope of pyritization and chloritic alteration. Secondary biotite and epidote were also observed. The best of these structures trends north and can be traced for about 50 metres.

A 1.9 metre chip sample contained a high of 1.2 grams per tonne gold, 114.5 grams per tonne silver, 1.24 per cent copper, 0.2 per cent tungsten and 0.002 per cent molybdenum. Other chip samples contained much lower values (Assessment Report 9617).

Work History

Teck Exploration Ltd carried out geological mapping, sampling and trenching on the Dok and Marg claims in 1980 and 1981 (Assessment Report 9617). Geological mapping, chip sampling and drilling and blasting were undertaken on the Dok and Marg claims, at which times the Marg East and Marg West were first documented.

In 1971, Swiss Aluminum Mining Co. undertook a program of geological mapping and silt sampling on the Gu claims to the north (Assessment Report 3847).

In 1990, Homestake Mineral Development Company prospected the Canyon 24 claims which covered some of the Marg area worked previously by Teck. A total of twenty three rock samples were collected from zones of alteration and mineralization. Several samples were taken in the Marg West (104G 058) and Marg East (104G 089) areas (Assessment Report 20150).

In 1990, Goldbelt Mines owned the Ambition 1 and 2 claims which covered the Marg East showing. Operator West Sea Development Corp conducted a sampling program on the property in this year.

In the late 2000s, five main areas of interest within the BRC Property of Brades Resources Ltd covered a large area between Dokdaon Creek and Yeheniko Creek. These are referred to as the Dok 35 area, the Teck Area, the Yeti Area, the Strata Creek Area, and the Yehiniko East Area. BRC carried out a preliminary exploration program in the fall of 2007 consisting of airborne geophysical surveys and a limited program of verification sampling. Airborne surveys were carried out by Fugro Airborne Surveys primarily in the Strata Creek area and verification sampling was carried out in the southwestern part of the claim group in the area referred to as the Teck area that contains the Marg West (104G 058) and Marg East (104G 089) showings (Assessment Report 30029). In 2010, Brades Resources completed detailed digital topographic maps of the Teck and Yeti areas and compiled all historic rock, soil and stream sampling data for the entire BRC Property. Later in 2010, Brades conducted detailed topographic mapping to cover additional parts of the BRC property and several helicopter assisted site visits were completed to verify mineralization reported in the central part of the BRC property. A total of 24 rock samples were collected. In late 2010 to January 2011 a detailed structural analysis of the Teck area and the Yeti area was carried out using shaded hillside imagery technology.