The occurrences are located north west of Fairly Lake.
The area, according to Muller, is underlain by an east trending band of rocks called Chert-Argillite-Volcanic Unit, of the Mesozoic Pacific Rim Complex. In this area the rocks are reported to consist of deformed cherts, argillites, limestone, sandstone, pyroclastics and volcanic flows. These are in contact to the north with metamorphic rocks of the Mesozoic and/or Paleozoic Westcoast Complex consisting of gneiss, migmatite and metadiorite.
Locally, quartz veins, up to 0.6 metre in width, containing minor pyrite, pyrrhotite and chalcopyrite are reported to cut both intrusive and sedimentary rock. Samples sent for assay revealed an insignificant content of gold and silver (Assessment Report 4940).
Several old adits were located about 1.5 kilometres east- north east of the mouth of the Gordon River (just north of the road). Minor pyrite and a trace of chalcopyrite were noted in cherty sediments on the dump. North of these adits, about 1200 metres, is a locality where an outcrop hosts pyrrhotite, pyrite and chalcopyrite (Assessment Report 4940, Map #2).
In Fairy Creek, about 750 metres north of the main road, traces of chalcopyrite and malachite were noted (Assessment Report 3672).
An old shaft, located about 500 metres west of where Fairy Creek crosses the road and a few hundred metres north of the road, was sunk into a bed of highly folded chert (Assessment Report 4941).
Conformable bands of pyrite, pyrrhotite and chalcopyrite were observed in tuff 800 metres north of the former San Juan property (Assessment Report 4940, page 5).
In 1971 through 1973, Perbell Mines completed programs of prospecting, geological mapping, soil and rock sampling and a ground magnetometer survey on the area as the San Juan property. In 1984 through 1986, Pan Island Resource completed programs of geochemical sampling, geological mapping and an airborne geophysical survey on the area as the Midas 1-3 claims. In 2006 through 2010, Emerald Fields Resource and Pacific Iron Ore completed programs of rock and soil geochemical sampling and ground and airborne geophysical surveys on the area as apart of the Pearson project.
