The G occurrence is located at an elevation of approximately 1670 metres in the southeastern headwaters of Marble Creek, approximately 4.5 kilometres south-southeast of the community of Cassiar.

Regionally, the area is underlain by quartz arenite sedimentary rocks of the Lower Cambrian Boya Formation (Atan Group), limestone, marble and calcareous sedimentary rocks of the Lower Cambrian Rosella Formation (Atan Group), limestone, slate, siltstone and argillite of the Ordovician to Silurian Road River Group and calcareous sedimentary rocks of the McDame Group. Granitic intrusive rocks of the Lower Cretaceous Cassiar Batholith are exposed to the west.

Locally, as defined by drilling, a pyrrhotite-magnetite body hosts tin (cassiterite?) with lead and copper mineralization. An outcrop of tremolite skarn with minor quartz veins, limonite, pyrite and trace sphalerite is reported approximately 350 metres to the southeast of the occurrence.

In 1969, a drillhole (H-1) is reported to have yielded 0.20 per cent tin over 2.0 metres (Assessment Report 7912).

In 2002, samples (7812 and 7816) of pyrrhotite- and magnetite-bearing felsenmeer from the tremolite skarn zone yielded values of up to 1.4 per cent lead, 0.12 per cent zinc, 26 grams per tonne silver and 1.5 grams per tonne gold, whereas samples from the G zone yielded up to 0.19 gram per tonne gold (Assessment Report 27203).

Work History

In 1959, Totem Minerals Inc. completed a 238.0 line-kilometre airborne magnetic and electromagnetic survey on the area as the Vines claims. In 1969, Chapparal Mines Ltd. and Coast Silver Mines Ltd. completed a 486.0 line-kilometre airborne magnetic survey on the area. Four diamond drill holes were completed on the occurrence around this time.

During 1979 through 1981, Shell Canada Resources Ltd. completed programs of geological mapping, geochemical (rock, silt and soil) sampling, diamond drilling and ground geophysical (magnetic, electromagnetic and induced polarization) surveys on the area.

During 1998 through 2008, Eveready Resources Corporation completed programs of geological mapping, geochemical (rock and soil) sampling and trenching on the area as the Cassiar property. In 2014, BC Moly Ltd. completed a program of geological mapping on the Storie property.

The area has been explored in conjunction with the nearby Magno (MINFILE 104P 006) occurrence and a complete exploration history can be found there.