Bigrlyi is located on the northern margin of the Neoproterozoic to Paleozoic Ngalia Basin in central Australia. Uranium mineralisation at Bigrlyi is confined to a specific narrow horizon within the lower Mount Eclipse Sandstone for which a local stratigraphic succession has been defined.
Energy Metals Ltd, as manager of the Biglryi Joint Venture, announced in May 2009 the results of a completed resource estimate for the Bigrlyi uranium project in the Northern Territory. This resource estimate incorporates the results from an infill drilling programme (83 holes) which was completed in December 2008. Results at a 500ppm U3O8 cut-off are as follows:
| Resource Category |
Mt |
U3O8 (ppm) |
Tonnes U3O8 |
Mlb U3O8 |
|
| Indicated Resources |
2.74 |
1,530 |
4,190 |
9.2 |
| Inferred Resources |
4.53 |
1,140 |
5,150 |
11.4 |
The resources were estimated using ordinary kriging (OK) by Hellman & Schofield Pty Ltd. At a cut-off grade of 500ppm U3O8, the Bigrlyi resource totals 20.6Mlb of U3O8. 45% of the contained uranium metal (or 4.19Kt U3O8) now reports to the Indicated Resource category, compared with 39% in the previous (March 2008) resource estimate.