The MG 1 showing is located at the southwestern corner of the Barite 4 claim, west of Cullen Creek, a tributary of the Bear River, about 50 kilometres northeast of Stewart.
The area is underlain by Jurassic Hazelton Group rocks. These comprise andesitic tuffs and breccias of the Lower Jurassic Unuk River Formation and volcanic sediments and tuffs with minor chert and limestone of the Lower Jurassic Betty Creek Formation. At the mouth of Cullen Creek is a small monzonite stock probably related to the Tertiary Bitter Creek dike swarm.
The showing is underlain predominantly by volcanic (probably andesitic) tuffs, breccias and conglomerates. The northeast trending Cullen Creek fault/shear zone is the main structure in the area.
A quartz breccia shear zone, up to 3 metres wide and averaging 1 metre in width, has been traced for at least 125 metres. The zone, striking 276 degrees and dipping 60 degrees south, is hosted in mafic tuff. Pyrite, galena and malachite are present in varying amounts and some of the quartz is vuggy. A random grab sample of a quartz shear, 2 metres wide, contained 20 per cent quartz and pyrite, 15 per cent malachite and 20 per cent galena. This sample assayed 80.4 grams per tonne silver, 2 per cent lead and 0.123 per cent zinc (sample MR-249, Assessment Report 22033). Samples were taken along the 125 metres strike with assays up to 186 grams per tonne silver (sample MR-251, Assessment Report 22033). The arsenic content was up to 0.2050 per cent.
The area has seen some exploration activity, primarily associated with the Crown-granted claims. There are no records of this work but there is evidence of prospecting and trenching. The work was most likely done in the 1970s and 1980s. In 1989, the Barite and Von claims were acquired by Teuton Resources. In 1990, Teuton Resources conducted stream sediment sampling, geological mapping, rock geochemical sampling and prospecting. In 1991, Teuton conducted geochemical (soil and silt) and rock sampling. The showing was sampled at this time. During 2005 through 2010, Auramex completed programs of prospecting, geological mapping, geochemical sampling and airborne geophysical surveys on the area as the Bear River-Surprise Creek property.
