The Lucky occurrence is located at an elevation of approximately 1690 metres on an east-west–trending ridge, north of Troutline Creek and approximately 5 kilometres east of the historical community of Cassiar.

The area is underlain by the Upper Paleozoic Sylvester Allochthon located on the northeastern margin of the Lower Cretaceous Cassiar Batholith. The Sylvester Allochthon is a fault bound imbricate assemblage of Mississippian to Upper Triassic Slide Mountain Complex regionally metamorphosed (greenschist) oceanic rocks thrust over the sediments of autochthonous North America. The assemblage contains basaltic to andesitic flows, pyroclastics, argillites, limestones, greywacke, chert, listwanite and quartz veins.

Locally, a quartz vein with tetrahedrite, sphalerite and trace chalcopyrite and pyrite mineralization is hosted at the contact between black, carbonaceous limestone in the hangingwall and black argillite. The vein averages between 1.0 and 1.5 metres in width and strikes approximately 160 degrees with a dip of 50 degrees northeast. The vein has been exposed for 15 metres along strike. The quartz-carbonate alteration of a parent ultramafic has produced listwanite which is associated with increased mineralization in the quartz veins. A trench located 20 metres north has exposed the possible northwest extension of the vein but is barren of sulphides at this location.

In 1984, a chip sample over a highly mineralized zone of the vein assayed 5.97 grams per tonne gold and 1662.6 grams per tonne silver (Assessment Report 14375). The following year, two chip samples (8053 and 8054) yielded 3.0 and 1.3 grams per tonne gold with 103.1 and 82.5 grams per tonne silver, respectively, whereas a grab sample (6178) taken from another quartz vein, located approximately 150 metres to the northeast, assayed 68.1 grams per tonne silver (Assessment Report 14375).

In 1986, diamond drilling yielded intercepts of up to 0.22 gram per tonne gold and 3.8 grams per tonne silver over 7.7 metres, including 0.94 gram per tonne gold over 1.0 metre in hole E86-1 (Assessment Report 15396).

In 2018, two samples (Z1012 and Z1042) from the Lucky vein yielded 0.55 and 0.32 gram per tonne gold, 2690 and 973 grams per tonne silver with 1.25 and 1.09 per cent copper, respectively, whereas an outcrop sample (CH007) of iron-carbonate–altered basalt with quartz veins and disseminated pyrite, located downslope to the south of the Lucky vein at an elevation of approximately 1620 metres, assayed 1.06 grams per tonne gold (Assessment Report 38310).

Work History

The area has been explored in conjunction with the nearby Elan (MINFILE 104P 075) and Boomerang (MINFILE 104P 112) occurrences and a complete exploration history can be found there.