The Rath showing is located along the south shoreline of Northeast Arm of Upper Arrow Lake near the village of Beaton.
Rusty weathering, dark grey phyllite and light grey to reddish or orange weathering phyllitic quartzite of the Upper Mississippian to Permian Milford Formation underlie the property.
Pyritic quartz-carbonate veins occur within roadcut and especially shoreline outcrops of the phyllite unit as well as within quartzite exposures in the northern and eastern portions of the property. The veins are lensy, 1 to 3 centimetres wide and subparallel to foliation. Some limestone wallrock has also been noted. The lenses are commonly 10 to 30 centimetres long and occur up to 20 metres along strike.
Three rock samples taken from shoreline exposures of limonitic and pyritic quartz veins analysed up to 1.99 per cent lead, 1.85 per cent zinc and 42.6 grams per tonne silver (Assessment Report 13439).