Work History
Staked as Guano, etc. cl (YA00242) in Jul-Sep/76 by Ukon Joint Venture (Chevron and Kerr Addision), which explored with mapping, geochemical surveys and an airborne radiometric survey in 1976, rock sampling in 1977 and a ground radiometric grid survey in 1979. In 2003, True North Gems silt-sampled in the vicinity of the occurrence. In 2010, soil and stream sampling was carried out near the occurrence and a helicopter radiometric survey was flown over the entire property.
Regional Geology
The occurrence is located on the Cassiar Platform, a curvilinear shelf that formed in the early Paleozoic, roughly parallel to the western margin of the North American craton but separated from it by the Selwyn Basin. Shallow marine miogeoclinal sediments were emplaced on the platform until Late Devonian time. Block faulting and local uplift during the Late Devonian and Mississippian resulted in deposition of carbonaceous shale and chert pebble conglomerate in the Selwyn Basin and across the platform. Local explosive volcanism produced volcaniclastic material and flows of the Pelly Mountains volcanic belt. The belt comprises localized submarine volcanic centres generated in an extensional environment that are separated by basins in-filled with sediments and volcaniclastic rocks. Several cogenetic syenite and trachyte domes and small stocks are the remains of vent areas. Subsequent deformation is a result of Mesozoic thrust faulting related to the Cordilleran orogeny, emplacement of Cretaceous intrusions and Tertiary strike-slip movement along the major northwest-trending Tintina Fault, 30 km to the northeast.
Property Geology
The occurrence was first identified as Showing #3 in AR 090269. Property-scale mapping indicates the occurrence is underlain by the Devonian True Blue syenitic pluton, but the area is covered with overburden. In 1976, float samples in the area assayed up to 0.407% U3O8. Uranium mineralization occurs in quartz-veined grey-green fine-grained radioactive dykes cutting syenite. A sample of quartz veining associated with dyke material returned up to 0.67% U3O8 in 1977; whereas, the dyke rock only assayed 0.008% U3O8.
The best grab sample (25776) from the 2010 rare earth element exploration program returned 0.16% TREO, 0.44% ZrO2 and 0.09% Nb. The samples were collected from the talus slope in the area.
