The Lonely showing is located approximately four kilometres south of the confluence of Range and South Range creeks, where the lower Paleozoic carbonate and Paleozoic argillite units are intruded by a Jurassic-Cretaceous heterogeneous dioritic pluton. Argillaceous rocks host up to 50 per cent pyrrhotite and chalcopyrite as pods and lenses. Calc-silicate skarn alteration is pervasive along this contact. The sulphide zone has a northwest trend and may be in part structurally controlled.

Several other localities along the margin of this pluton were also examined and sampled. Most of the sulphide mineralization consists of disseminated pyrrhotite.