The Star occurrence is situated west of Spider Peak, immediately north of the Pipestem mine (MINFILE 092HNW011).

The area is underlain by grey to black, locally organic-rich, pyritic, slaty argillite intercalated with well-bedded siltstone, all assigned to the Early and Middle Jurassic Ladner Group. A number of northwest- striking bands of medium to very coarse-grained, tuffaceous, fossiliferous wacke also occur within the sequence. The bands vary from 5 to 45 metres thick and are the principal host to gold mineralization at the Pipestem mine.

To the south, these sedimentary rocks have been intruded by narrow sills and dikes up to 4 metres thick. Several porphyritic felsic sills, similar to those associated with gold occurrences in the Siwash Creek area (MINFILE 092HNW004, 005, 015-017), host thin quartz veins with pyrite.

Development at the Star occurrence reportedly consisted of four open cuts that exposed a 2.13-metre wide, northwest-striking, oxidized shear zone over a distance of approximately 213 metres. The shear contained 1.22 metres of quartz and 91 centimetres of pyritized, Ladner Group slate dipping 50 degrees to the southwest.

Assay values of approximately 1.71 grams per tonne gold were obtained from surface samples and free gold could be panned in certain places (Minister of Mines Annual Report 1933, page A177).

During 1976 through 1978, Longbar Minerals completed programs of soil sampling and 9.0 line-kilometres of ground geophysical surveys. In 1980 and 1984, Aquarius Resources completed programs of soil and rock sampling on the area. In 1982, Carolin Mines completed a program of geological mapping, rock and soil sampling, trenching and 19 surface diamond drill holes, totalling 1721.51 metres, on the area. During 1994 through 1996, Athabaska Gold Resources completed programs of geological mapping, geochemical sampling and trenching on the area. In 2012, New Carolin Gold completed airborne magnetic and radiometric surveys, totalling 759 line-kilometres, on the area.