The BRU 21 showing is located 2 kilometres south of Arlington Lakes, and approximately 12 kilometres north-northeast of Carmi.

The showing consists of two mineralized outcrops, 300 metres apart, along the Kettle Valley Railway right-of-way and an adit 75 metres east of the railway. All are hosted by greenstone of the Carboniferous-Permian Anarchist Group. Copper (chalcopyrite?) is noted at this location but no other information is available on the mineralogy.

A number of copper occurrences are found in this general area, but they are associated with quartz veins and shear zones in diorite, not greenstone.

Work History

In 1971, Hudson's Bay Oil and Gas Ltd. carried out a ground magnetometer survey of the area. In 1973, the area was prospected and the geology mapped for K.F. Brunning. The 1971 magnetometer survey identified a magnetic anomaly associated with a geological contact between gneissic diorite and a mafic diorite several hundred metres to the northeast (the DKD 2 (082ENW041) showing?).

In 1996, Madman Mining Co. Ltd. completed a prospecting, soil sampling, and a VLF-EM geophysical survey on the property containing the occurrence.

In 2015, Explorex Resources Inc completed magnetic and VLF-EM geophysical surveys, a prospecting and sampling program on the property containing the occurrence.

In 2017, Coast Mountain Geological Ltd. completed an exploration program including soil sampling, rock sampling, and 26.4 line-kilometres of ground magnetic and VLF-EM surveys.

In 2018, Clarmin Exploration Inc. completed a prospecting and soil sampling program on the Arlington property (Assessment Report 36956). The property was returned to Explorex Resources Inc. in late 2018.