The Morning Star prospect, which includes the Sunshine quartz vein system, is on the east side of Silver Cup Ridge, at 2360 metres elevation on the southeast flank of Triune Mountain. It is on the northwest side of North Brown Creek. The Morning Star (L.4574) tenure lies immediately to the east of the Triune [082KNW026] occurrence. It is approximately 750 metres northwest of the Noble Five [082KNW153], 400 metres west of IXL [082KNW118] and 400 metres east of the Chance [082KNW119] prospects.

Sunshine veins were found in the early 1890s, at approximately the same time as the neighbouring Triune [082KNW026] and Silver Cup [082KNW222] occurrences. They were explored intermittently through to 1914. The Morning Star vein is exposed in an upper adit, at 2345 metres elevation and a lower one, ten metres further down the hill. The Morning Star claim was part of a claim cluster, known as the Silver Basin Group, that was owned by American Chromium Limited in 1979. The Group also included the IXL [082KNW118], Chance [082KNW119] and Noble Five [082KNW153] prospects. They were explored through to the late 1980s.

The Trout Lake area is underlain by a thick succession of sedimentary and volcanic rocks of the Badshot Formation and Lardeau Group near the northern end of the Kootenay arc, an arcuate, north to northwest trending belt of Paleozoic and Mesozoic strata that is now classified as a distinct, pericratonic, terrane. The arc rocks are bordered by Precambrian quartzite in the east and they young to the west, where they are bounded by Jurassic-age intrusive complexes. They were deformed during the Antler orogeny in Devonian-Mississippian time and were refolded and faulted during the Columbian orogeny, in the Middle Jurassic. A large panel, the "Selkirk allochthon", was later offset to the northeast by dip-slip motion along the Columbia River Fault.

The Badshot Formation is composes of a thick Cambrian limestone that is a distinctive marker horizon in the Trout Lake area. It is underlain by Hamill Group quartzite and it is overlain by a younger assemblage of limestone, calcareous, graphitic and siliceous argillite and siltstone, sandstone, quartzite and conglomerate, and also mafic volcanic flows, tuffs and breccias, all of which belong to the Lardeau Group. The rocks are isoclinally folded and intensely deformed, but only weakly metamorphosed. They occur as intercalated beds of marble, quartzite and grey, green and black phyllite and schist. Fyles and Eastwood (EMPR BULL 45) subdivided the group into six formations (Index, Triune, Ajax, Sharon Creek, Jowett and Broadview) of which the lowermost (Index) and uppermost (Broadview) are the most widespread. The Triune (siliceous argillite), Ajax (quartzite) and Sharon Creek (siliceous argillite) are restricted to the Trout Lake area. The Jowett is a mafic volcanic unit.

The Morning Star area is on the northeast side of the Cup Creek fault. It is underlain by a complex assemblage of green phyllites (chlorite schists) and carbonates of the Index Formation. The rocks are folded, deformed and schistose. The foliation has the regional northwest strike and moderate to steep northeast dip found throughout the Silver Cup Ridge area. There are several mineralized veins on the property. Most strike due north, dip steeply to the east and cut highly altered, siliceous limestone. The main near-vertical vein, known as the "Morning Star", has been opened by an adit. It consists of a series of irregular, quartz-siderite stringers that form part of a broad silica, mariposite, carbonate alteration zone in limestone. The stringers are narrow and irregular, and pinch and swell up to 0.3 metre in width. They contain spots and pods with minor galena, pyrite, lesser chalcocite and possibly tetrahedrite. Shearing has taken place along the veins and the wall rock has been converted to grey calc-schist. There is a similar vein exposed in a second adit. The best assays so far reported, are from a site near the portal of the lower adit. A sample adjacent to the entrance assayed 82.4 grams per tonne gold and 49.7 grams per tonne silver over 0.22 metre. Approximately 60 metres northeast of the lower adit, and about 4.6 metres above the upper adit, there is a northwesterly trending, moderately northeast dipping vein that cuts the limestone in a joint plane but does not appear to extend into the adjoining schist to the east. It is known as the "flat vein". It contains galena and tetrahedrite. The latter is commonly marked by the presence of azurite. A small cut on the vein has exposed 0.1 to 0.15 metre of galena and tetrahedrite grading 8.57 grams per tonne gold, 4711 grams per tonne silver and 44.6 per cent lead. There are other workings on the property.