The Falea deposit is interpreted as an unconformity-associated uranium deposit. It occurs at or just above the unconformity between the Birimian and overlying sedimentary sequences, within the Kania Sandstone as well as the underlying basal conglomerate. It is interpreted that proximity to the Road Fault, a reverse fault that strike North-South could have introduced enriched fluids into the sandstones.
Unconformity-associated deposits are high-grade concentrations of uranium that are located at or near the unconformity between relatively undeformed quartz rich sandstone basins and underlying metamorphic basement rocks.
The compositional spectrum of unconformity-associated uranium deposits can be described in terms of monometallic (simple) and polymetallic (complex) end-members on the basis of associated metals. Polymetallic deposits are typically hosted by sandstone and conglomerate, situated within 25 m to 50 m of the basement unconformity. Polymetallic ores are characterized by anomalous concentrations of sulphide and arsenide minerals containing significant amounts of nickel, cobalt, lead, zinc, and molybdenum. Some deposits also contain elevated concentrations of gold, silver, selenium, and platinum-group elements.