South Dufferin Project
Athabasca Basin, Saskatchewan
The South Dufferin Project consists of 7 contiguous claims totaling 29,640 hectares located 110 kilometres west of the Key Lake mine and mill complex and 20 kilometres south of Cameco’s Centennial Deposit. The property is accessible by float/ski equipped aircraft or by a seasonal road.
The South Dufferin property lies on the southern edge of the Athabasca Basin and transects the property. The sandstone thickness ranges from zero to 147 metres. The basement rocks consist of metasedimentary and metavolcanic rocks belonging to the Western Granulite and Virgin River Domains. A major structural break called the Virgin River Shear zone divides the two domains.
Historical work• Sporadic exploration occurred on the property from 1959 to 2004 including airborne geophysics and 15 drill holes.
• From 2004 to 2010 JNR Resources performed two airborne geophysical surveys and a ground geophysical survey spaced over five separate grids.
• In 2011 JNR Resources drilled 9 drill holes totalling 1190 metres. Several of the holes intersected anomalous uranium and base metals.
PotentialOn the South Dufferin property, airborne and ground EM geophysical techniques have located numerous conductive horizons, often associated with gravity and magnetic lineaments, in what is interpreted as a structurally complex environment. Limited drill testing has been completed on the geophysical areas of interest. The drilling that has been completed intersected large structural zones that have been locally reactivated. The drill holes are not geochemically anomalous and do not have significant alteration associated with them. However, uranium mineralization occurs at several locales within the Virgin River Shear Zone outside of the South Dufferin property associated with late brittle faults that often offset the Athabasca Group unconformity. Surficial geochemical techniques could assist in prioritizing future drilltargets on the property, which remains relatively untested for basement-hosted uranium mineralization – especially considering that the Centennial deposit is located 300-400 metres from the Virgin River shear and is not on a conductor.