Anomalous radioactivity and key geological features associated with basement-hosted uranium mineralization were intersected by a significant proportion of the holes drilled during the winter program.
The drilling program comprised 2,773mt in 14 holes and focused on following up JNR’s previous drilling and exploration of the Fraser Lakes B zones. These mineralized zones are contained within a 5km-long interval of a folded electromagnetic (EM) conductor system with a total length of 65km and comprised of Wollaston Group graphitic pelitic gneisses and uraniferous granitic pegmatites.
The mineralized zones were discovered by ground prospecting of airborne geophysical targets during the summer of 2008.
The B Zone showings occur within an anti-formal fold nose of the EM conductor. Of the 70 grab samples taken from individual mineralized outcrop sites, 70% returned assays ranging from 0.03 to 0.457% U3O8. Multiple intervals of uranium and/or thorium mineralization were intersected in many of the 18 drill holes completed in 2008 and 2009. Anomalous radioactivity was intersected in the majority of holes drilled during the 2010 winter program.
The drilling has also provided evidence for the presence of east-west and north-south structural corridors that intersect the main northeast-trending EM conductors. Similar structural and geological settings are required for the formation of major basement-hosted unconformity-type uranium deposits.
In addition, preliminary analysis of the results from PIMA infrared spectroscopy has indicated a preponderance of illite in a major clay filled fault system that was intersected in holes WYL-10-53 and 55. Illite is an important clay mineral that accompanies many of the significant uranium deposits in the Athabasca Basin.
All of the samples have been delivered to the SRC Geoanalytical laboratory in Saskatoon and the final geochemical results should be received for evaluation by mid May. These results will be integrated with the PIMA and on-going structural studies to plan the next phase of drilling.
