The Dillon occurrence is described as being located 5 kilometres west of Lillooet, between Town Creek and the Seton River, in a basin at an elevation of approximately 1200 metres.

The area is underlain by marine sedimentary rocks, volcanic rocks and greenschist metamorphic rocks of the Mississippian to Middle Jurassic Bridge River Complex. These have been intruded by bodies of granodiorite to the west.

Locally, mineralized sediments (argillite and quartzite) are hosted in an anticlinal structure and dip at flat angles under granitic rocks. Mineralization consists of chalcopyrite, pyrrhotite, pyrite and magnetite. These are reportedly exposed by four pits over an area of 60 by 30 metres. In 1967, three chip samples across 10.5 to 18 metres assayed from 1.17 to 3.63 per cent copper and averaged 2.33 per cent copper with minor values in nickel, silver and gold (Property File - F.J. Hemsworth [1967-09-28] - Report on the Dillon Property).

In the 1960‘s, the area was explored by Zodiac Mines as the Dillon property.