The Marjorie occurrence area is underlain by Upper Triassic Karmutsen Formation amygdaloidal basalt close to the contact with Quatsino Formation limestone, both of the Vancouver Group. The basalts are fractured and sheared and host a series of eight parallel gold-bearing, pyritic quartz-calcite veins and stringers with variable amounts of siderite and ankerite. The veins strike west-southwest, dip vertically and occur within 100 metres of one another. They vary from a few centimetres to 1.2 metres in width, and attain a maximum strike length of 44 metres. Wallrock contacts are well-defined. Mineralization in the veins also include minor amounts of native gold, pyrrhotite and occasional galena.

A main shaft is developed on a vein (Main Shaft vein) on the Saga claim (Lot 216) where some historic production has taken place from drifting and stoping. At the face of the west drift a fault cuts off the vein. A grab sample of sorted ore from dump material from the west drift assayed 67.87 grams per tonne gold and 17.14 grams per tonne silver (Minister of Mines Annual Report 1922, page N237). Sixty-one metres south of the Main Shaft vein, an open cut exposes the Big vein which parallels the Main Shaft vein and dips 80 degrees north towards it. A chip sample taken across the Big vein assayed 10.96 grams per tonne gold (Minister of Mines Annual Report 1922, page N236). Five other veins occur between the Main Shaft vein and the Big vein. Forty-two metres north of the Main Shaft vein, an open cut exposes the No. 8 vein. A grab sample of sorted ore from dump material from an open cut on the No. 8 vein assayed 87.75 grams per tonne gold and 20.56 grams per tonne silver (Minister of Mines Annual Report 1925, page A287).