MineralizationThis is promising but i would have liked to know if sulhides were present and at what level.
Reconnaissance field work has also outlined a plurimetric-wide east-west sheared zone at the contact between the tonalite pluton and altered mafic metavolcanics. The volcanics are altered in chlorite-actinolite-biotite-garnet with traces to 3% sulfides (pyrite-pyrrhotite-chalcopyrite-molybdenite-arsenopyrite?). They are also injected by two generations of veins: metasomatic chlorite-epidote-potassic feldspar cm-dm veins and late tension tourmaline-quartz & tourmaline mm-cm veins. The tonalite is variably altered with quartz and tourmaline (locally up to 15%) and is injected with 3-5% tourmaline-quartz-feldspar stockwork or veinlets.
A gold porphyry target is now considered for this area; such mineralization type is known elsewhere in the Eastmain-1 region. Another small (7 x 2 km) tonalite plug in contact with mafic volcanics is also located further up-ice, where stops the gold till train.