The GL occurrence is located approximately 8.3 kilometres northeast of Aiken Lake and approximately 97 kilometres northwest of the community of Germansen Landing.
The area is underlain by the Lower Jurassic Polaris Ultramafic Complex which is composed of dunite, werhlite, pyroxenite, and gabbro, some of which is altered to serpentine.
The GL zone is located approximately 600 metres north of the Queen zone (094C 163) and may be a faulted extension of that zone. The GL zone consists of rusty weathering, sporadic outcrop and float found over an area of 500 by 200 metres. The zone is in part a flat-lying layer but drilling has shown it is more complex as it is complicated by folding and faulting. In addition, numerous intrusions of feldspar pegmatite have resulted in metasomatic alteration resulting in the formation of pegmatitic pyroxenite, which effectively has removed any pre-existing mineralization.
The main GL zone outcrop and diamond-drill hole GL-04-02 indicate that the GL zone is approximately 20 metres thick. The mineralized olivine clinopyroxenite layer is generally overlain by a dunite layer. Mineralization consists of very fine grained to fine grained, magmatic, disseminated chalcopyrite, pyrite, pyrrhotite with minor bornite and primary covellite. The GL zone appears to have more pyrrhotite than the Queen zone. Sulphide content ranges from 3 to 15 per cent and is not accompanied by any discernible alteration.
Some results obtained from the GL zone are: 0.768 per cent copper, 0.247 per cent nickel, 0.083 per cent cobalt, 0.055 gram per tonne gold, 0.059 gram per tonne platinum, and 0.091 gram per tonne palladium; and 0.273 per cent copper, 0.165 per cent nickel, 0.077 per cent cobalt, 0.060 gram per tonne gold, 0.268 gram per tonne platinum, and 0.435 gram per tonne palladium (Assessment Report 27617).
Work History
The Star 1-5 claims were staked by U. Mowat in February, 1995 to cover a unit of the Polaris Ultramafic Complex. Mowat prospected, sampled and mapped the property from 1995 to 2002 inclusive. In 2003, Minterra Resource Corp. optioned the Star magmatic platinum group element property from Mowat. The company proceeded with an 8-line kilometre induced polarization survey that identified a number of drill targets. In 2004, Minterra drilled eight holes on the property totalling 1044 metres. The Star claims were briefly optioned to Aumega Discoveries in 2005 but the option has been terminated.
In 2014, U. Mowat conducted geochemical sampling (110 soil, 190 rock) on the large Star property which covers the Queen (094C 163), GL (094C 165), Ridge (094C 164), HC (094C 166), HA (094C 167) and HB (094C 168) occurrences.
In 2015, U. Mowat completed a further program of geochemical (rock and soil) sampling on the Star property.