The Lone Silver (Lone Star) occurrence is located on the north side of a small hill east of Rosebud Lake at an elevation of approximately 870 metres.

Regionally, the area is underlain by fine clastic sediments of the Lower to Middle Ordovician Active Formation, sediments and carbonate rocks of the Middle Cambrian Nelway Formation, undivided sedimentary rocks of the Cambrian Laib Formation and quartz arenite sedimentary rocks of the Neoproterozoic to Lower Cambrian Hamill Group. To the north these have been intruded by granodioritic rocks of the Cretaceous Anstey pluton, and a small stock of syenitic to monzonitic intrusive rocks of the Eocene Coryell Plutonic Suite outcrops to the southeast.

Locally, the occurrence is located on the Black Bluff fault. To the northwest of the fault are black, graphitic argillites and calcareous sediments of the Lower to Middle Ordovician Active Formation. On the southeast side of the fault are dolomites and limestones of the Middle Cambrian Nelway Formation. The dolomites form a large anticlinal structure with a shallow plunge to the southwest, truncated at a shallow angle by the Black Bluff fault.

Two types of sulphide mineralization consisting of pyrite, chalcopyrite, galena, sphalerite, and tetrahedrite have been identified associated with the Black Bluff fault over an approximate distance of 100 metres. The first type of mineralization comprises dolomites of the Nelway Formation, which are commonly brecciated with small angular fragments of dolomite hosting disseminated sulphides in the matrix. Small quartz veinlets occur within the dolomite breccia zones. The second type of mineralization comprises argillites of the Active Formation along the Black Bluff fault that have formed planar faults and shears, 0.3 to 0.9 metre wide, characterized by graphitic schist and quartz veining along shears and fractures with the quartz veining carrying sulphides.

The dolomitic breccia zones are characteristically high in silver-copper values whereas the vein/shears in the Active Formation have been more productive of gold, silver, lead and zinc. Ore zones of both types have proven to be limited in extent and scattered along the trend of the Black Bluff fault.

Another zone of mineralization, referred to as the West Gold Anomaly, is located approximately 350 metres to the southwest and has been exposed by the G7 and G44 trenches. This zone comprises poorly bedded carbonate (limestone) rock hosting narrow quartz-calcite veins with pyrite, galena and possible tetrahedrite mineralization. The veins generally strike 150 degrees and dip 60 degrees east.

In 1982, three dump sample (LS-006, -011 and -012) yielded from trace to 4.86 grams per tonne gold and 44.8 to 275.3 grams per tonne silver, whereas chip sampling of the adits yielded 235.0 grams per tonne silver and 0.41 gram per tonne gold over 2.4 metres from the No. 1 adit (sample LS-007); 103.6 grams per tonne silver over 0.75 metre from the No. 3 adit (sample LS-004) and 41.0 grams per tonne silver over 0.6 metre from the No. 5 adit (Sample LS-003; Assessment Report 10842).

In 1988, sampling yielded values of 0.29 gram per tonne gold, 542.6 grams per tonne silver and 1.113 per cent lead from a quartz vein in brecciated dolomite at the No. 1 adit portal (sample 1113); 213.9 grams per tonne silver, 0.359 per cent zinc, 0.363 per cent lead and 0.333 per cent copper from a trench east of the No. 3 adit portal (sample 1011); 0.243 per cent copper, 1.734 per cent lead, 7.160 per cent zinc, 474.5 grams per tonne silver and 0.27 gram per tonne gold from a cliff face south of the No. 3 adit portal (sample 1005) and 0.25 gram per tonne gold, 27.0 grams per tonne silver, 0.417 per cent lead and 0.309 per cent zinc from a sample (7089) of dump material from the No. 3 adit (Assessment Report 18363).

In 1996, a rock sample (MK-96-1) of phyllite with quartz veins from dump material of the western most opencut assayed 3.49 grams per tonne gold (Assessment Report 24748).

In 2010, two composite samples of dump material yielded 21 and greater than 50 grams per tonne silver (Assessment Report 32681).

In 2016, a chip sample (GR-16-02) of mineralized dolomitic breccia from a trench east of the No. 3 adit portal (same area as the previously reported sample 1011 from 1988) assayed 0.05 gram per tonne gold and 76.6 grams per tonne silver over 0.15 metre (Assessment Report 36135).

In 2018, two chip samples (GR18-07 and -09) from the G7 trenches on the West Gold Anomaly zone assayed 53.5 and 31.7 grams per tonne silver with 0.475 and 0.187 per cent lead across 3 and 6 metres, respectively, whereas a grab sample (GR18-11) from the G44 trench yielded 10.6 grams per tonne silver and 0.193 per cent lead (Assessment Report 38087).

Intermittent production during 1909 through 1941 totalled approximately 174 tonnes, from which approximately 2674 grams of gold, 693 kilograms of silver, 10 746 kilograms of lead and 3693 kilograms of zinc have been recovered. In 1963, a further 39.9 tonnes of ore yielded 1412 grams of gold, 244.7 kilograms of silver, 2650 kilograms of lead and 1691 kilograms of zinc (Assessment Report 10842).

The area has been explored since the early 1900s as the Hope, Mascot and Lone Silver claims. By 1915, the occurrence had been developed by four adits with minor production occurring at this time. During 1935 through 1939, two more adits were developed with minor production occurring. In 1963, the area was re-staked and a sixth adit was developed with minor production being reported. The six adits, now collapsed at the portals, were driven south into a steep north-facing slope and extend for approximately 100 metres in an east-west direction, with some exceeding 60 metres in length.

In 1981, a ground magnetic and electromagnetic survey was completed on the area as the Tur claims. In 1982 and 1983, further programs of ground geophysical surveys, geochemical sampling and prospecting were completed on the area as the Lone Silver, Bine and T Fox claims. In 1986, O.G.G. Resources prospected and sampled the area immediately south as the Lone Silver 2-3 claims. In 1988, International Corona Corp. completed a program of geological mapping and rock, silt and soil sampling on the area as the Zip 1-2 and Lone Silver 1-3 claims.

In 1992, Pan Orvana Resources completed a program of geochemical sampling and a single, 154.2-metre long diamond drill hole on the area.

During 1994 through 2018, M.A. Kaufman conducted programs of rock and soil sampling, geological mapping, 14.8 line-kilometres of ground electromagnetic and magnetic surveys, a 0.3 line-kilometre gravity survey, minor trenching and two diamond drill holes, totaling 189.0 metres, on the area as the Gus and CSI claims.