The Amazon occurrence is located southeast of a small lake in the northern headwaters of the western arm of Washlawlis Creek, approximately 3.3 kilometres north of its mouth on Rupert Cove.

Regionally, the area is underlain by northwest-trending belts of basaltic volcanics and carbonate sedimentary rocks of the Upper Triassic Karmutsen and Quatsino formations (Vancouver Group) and mafic volcanics and sediments of the Upper Triassic to Lower Jurassic Bonanza Group (Holberg volcanic unit, Nahwitti River wacke and Parson Bay Formation). These volcanic and sedimentary rocks have been intruded by granodioritic rocks of the Early to Middle Jurassic Island Plutonic Suite.

Locally, chalcopyrite and sphalerite mineralization is hosted in rocks of the Karmutsen Formation, and what is probably a replaced limestone lens is intercalated within the Karmutsen volcanics.

In 1980, two grab samples (736 and 737) assayed 3.01 and 4.12 per cent copper, 1.45 and nil per cent zinc with 8.6 and 25.3 grams per tonne silver, respectively (Assessment Report 9811).

In 1968, Dawn Minerals soil sampled the area. Also, at this time, Emperor Mines completed an airborne magnetic survey on the area immediately north. In 1981, Strato Geological Engineering Ltd. completed a program of rock sampling and a ground electromagnetic survey on the area. In 1991 and 1992, Daiwan Engineering Ltd. completed programs of prospecting, geochemical sampling and ground geophysical surveys the area immediately north as the Marisa 1-4 claims.