The CX occurrence is located just west of Trout Lake, about 53 kilometres east of the community of Atlin.

The area is underlain by alaskitic quartz monzonite of the Late Cretaceous Surprise Lake batholith (Surprise Lake Plutonic Suite) and the western margin of the "Trout Lake graben". Organic-rich lacustrine sediments contain up to 0.14 per cent uranium (Assessment Report 6448).

In 1976, a regional uranium exploration project conducted by Cordilleran Engineering Limited resulted in the acquisition of 208 claim units. These claims were subsequently optioned to Canex Placer Limited. In 1977, a geochemical soil survey (424 samples) was conducted by Canex Placer Limited as a follow-up of an airborne geophysical survey conducted by the same company.

In 2006, Aldershot Resources Ltd. conducted a spectral analysis program on their Atlin East property which covers the CX, Mir 3 (104N 113), Mir 7 (104N 112) and CX 2 (104N 111) occurrences. The program involved acquisition of satellite spectral data available from NASA, reconfiguring the data into a workable format, geo-referencing to TRIM map bases and extensive and rigorous classification of the data in search of indicators that might lead to the discovery of uranium mineralization.