The Star quartz vein on Lot 562 is located northeast of Maple Bay on the east side of Portland Canal, 55 kilometres south of Stewart.
The region is underlain by a roof pendant, consisting of volcanic and sedimentary rocks, within the Eocene Coast Plutonic Complex. These pendant rocks have been correlated with Middle-Upper Jurassic Hazelton Group rocks and overlying upper Middle to Upper Jurassic Bowser Lake Group sedimentary rocks (Geological Survey of Canada Open File 3453). The Hazelton rocks consist of variably chloritized pillow and massive andesite and basalt with minor mafic tuffs. The overlying Bowser Lake sediments consist of argillite, siltstone and sandstone with minor chert and limestone. There are two observable phases of folding in the area, an initial north-northeast trending phase followed by a later east-northeast trending phase.
The Star vein is the southern extension of the Outsider vein system (103O 018). The Outsider vein lies along the contact between greenstone (hangingwall) and silicified argillite (footwall) and is conformable to the bedding of the hostrocks. The Star vein strikes northeast and consists of fine grained white quartz with pyrrhotite and lesser chalcopyrite. Locally, up to 50 per cent of the vein consists of sulphides.
In 1912, it was reported that the Granby Consolidated Mining, Smelting and Power Company shipped an appreciable tonnage of copper ore from the Star claim to its smelter at Anyox. In 1917, the Star vein produced 4845 tonnes of quartz carrying minor copper, gold and silver values. In 1931, the Eagle (103P 043), Princess (103P 048), Alexander, Blue Bell (103P 242), Comstock (103P 040) and Star claim group comprised a consolidated block of 23 Crown granted mineral claims. The Eagle, Princess, Alexander, Blue Bell and Star groups were owned by W. Noble and associates, of Stewart. The Comstock group of seven adjoining claims was owned by the estate of H. Flewin and C.B. Flewin. In 1971, the property was examined by C.E. Michener on behalf of Yorkshire Copper Mines Ltd. In 1996, propecting was conducted on the Maple Bay property on behalf of New Dolly Varden Mines Ltd. In 2006, TA Minerals completed an airborne geophysical survey over the Maple Bay area. In 2010, a program of MMI soil sampling was completed on the area. In 2014, a program of geological mapping, geochemical (rock and soil) sampling and a 4.3 line-kilometre ground magnetometer survey were completed on the Coastal Copper claim. In 2018, Golden Opportunity Resources Corp. examined the area as the Maple Bay property.
