Bokan Mountain Project
Kendrick Bay, Prince of Wales Island, Ucore Rare Metals
Aurora has been involved in the exploration of the Bokan Mountain rare earth project since 2008. The property covers 38.12 square km (14.72 square miles) and hosts potentially economic deposits of rare earth elements.
Exploration has consisted of mapping, sampling, diamond drilling, magnetometer and IP geophysical surveying, construction of a 3D computer deposit model and calculation of a mineral resource estimate.
Bokan Mountain represents an unusual style of rare earth element (REE), uranium, niobium, and zirconium mineralization hosted within, or proximal to, a circular Jurassic A-type peralkaline intrusive complex known as the Bokan Mountain Granite.
Exploration work on the Dotson Zone confirmed the presence of continuous rare earth element mineralization over a defined strike length of 2140 m with an average width of 50 m. Mineralization has been traced to over 300m down dip. The zone remains open on strike to the west and at depth. Mapping, prospecting, trenching and drilling defined 25 veins, dykes and vein arrays within the system. The veins generally dip steeply north. Most veins are less than 1.5 m wide but at least 5 of the veins have sections widths up to 3 m and grades averaging around 1.1% TREO (total rare earth oxide). The vein system is characterized by a high proportion of heavy REEs (Eu to Lu and Y), averaging about 40% of TREO.