The EM 104 occurrence is located on the east side of Madson Creek, approximately 850 metres south of the creek mouth on Watson Bar Creek.

The region is underlain by mainly sedimentary rocks of the Lower Cretaceous Jackass Mountain Group, cut by several cross faults and splays of the Fraser fault. Intruding the Jackass Mountain Group are numerous dikes and small stocks of quartz feldspar porphyry.

Locally, a bleached pyritic-chalcedonic sandstone hosts mineralized quartz veins in limonitic shears. Mineralization consists primarily of arsenopyrite and pyrite.

In 1988, a sample (1456) assayed 9.72 grams per tonne gold (Assessment Report 17781).

During 1983 through 1985, Utah Mines completed programs of geological mapping, geochemical sampling and an induced polarization survey on the area as the Mad claims. In 1987 and 1988, Southern Gold Resources completed programs of geological mapping and rock and soil sampling. In 1997 and 1998, First Point Capital, on the behalf of BHP Minerals, completed programs of rock, silt and soil sampling. In 2006 and 2007, Durfield Geological completed programs of geological mapping, geochemical sampling and an induced polarization survey.