The North Star showing is located about 1.6 kilometres from the Jumbo occurrence (082N 048). It was reported that an adit, 42 metres long, was driven to intersect a vein with argentiferous galena (Minister of Mines Annual Report 1899, page 678).
The hostrock at the showing is inferred from the nearby Jumbo and Sanquhar (082N 047) occurrences and consists of northwest striking Lower Cambrian and younger Lardeau Group slates. A quartz vein (inferred) vein hosts argentiferous galena.