The Blue Rain property is east of and adjoins the Star or Leadville property (082FSE006). Traces of tetrahedrite in quartzite have been observed over a large area; a few short diamond-drill holes have been drilled at random locations in order to prospect the occurrence. It has been described as tetrahedrite "scattered" in quartzite by N. Carter (1993). A grab sample in 1957 assayed 10 grams per tonne silver, nil copper, less than 0.1 per cent nickel and only trace gold (Minister of Mines Annual Report 1957). Hostrocks are not described in detail, but consist of quartzite of the Aldridge Formation, part of the Middle Proterozoic Purcell Supergroup.