URA1 Mar 2011 07:05
The data obtained during the 2010 drilling programme confirmed the Company's expectations and demonstrated that conditions favourable for roll-front uranium mineralization exist well below the already known horizons. Of particular note are holes 1, 2, 8, 9, 10 and 11 which intersected beds of permeable arkose sandstone and extensive zones of reduction and pervasive oxidation down to depths of 400 m. The lithological composition of the host rock units, porosity, location and extent of the oxidized zones indicate ideal geological settings for multiple mineralized roll-fronts. The scale and intensity of the observed redox processes is particularly encouraging as they are considered adequate for producing significant uranium deposits. Roll-front uranium deposits form in flat-lying, permeable clastic sediments at the interface of advancing oxidizing groundwater and reducing conditions. The intensity of oxidation and its spatial extent are indicative of the duration of these processes and volume of the sedimentary rock that has been altered and depleted of uranium and associated elements.
The 2010 programme was designed, after extensive and thorough data collation and analysis, to verify the Company's geological and structural model and generate targets with both near-surface and deep mineralization. The programme comprised 11 vertical diamond drill holes in two phases totalling 4,170 m and targeted the areas with known uraniferous mineralization as well as new zones. The eleven holes, 300m to 500 m deep and 500m to 4,000 m apart, were positioned in 3 intersecting fences covering a large area 8 kilometres long and 4 kilometres wide.
The ongoing in-depth interpretation of geological and geochemical results of the 2010 programme will significantly narrow the search radius and generate defined drill targets for the 2011 programme. To compress the timeframe and minimize exploration risks, the Company is utilizing sophisticated geological and geochemical modelling to process the 2010 data. Since acquiring control of the Tanzanian projects, the Company has developed a complex, proprietary geological model by using remote sensing, geophysical, field mapping, and structural interpretation data. This model is continuously enhanced and updated within the areas with previously known mineralization, the drilling produced contiguous intercepts with significant U3O8 grades in holes 1, 9, 10, and 11.