Central Block is the largest land holding, consisting of 20 cateos and a few claims covering a total of 202,869 hectares. The holding covers the known uranium districts of Cerro Mesa, Las Carceles, and Chihuidos, located in Neuquén Province. The geological style and geometry is of a typical in-situ leach uranium project.
All of these districts are developed in the same stratigraphy within the Rayoso Group, of Cretaceous age (see Regional Geology Map). These are continental channel-fill sandstones with vegetative matter and bitumen. Mineralization consists of copper and uranium oxides, and variable amounts of silver and vanadium. Grades of uranium are generally low but persistent, and the mineralized interval is in sandstone held between impermeable beds of clayey siltstones. The altered and mineralized beds are commonly 6 to 10 metres thick and they are gently dipping, with the Chihuidos anticline running through the center of the project area. Depths to the mineralized horizon range from zero (where the beds outcrop the known districts are located) to around a maximum of 300 metres.
Regional Geology Map |
Airborne Magnetometric Map |
Airborne Radiometric U Count Map |
The airbone radiometric survey exposes anomalies over every erosive window where the Rayoso Group outcrops; although not every anomaly is related to this unit. In total, 123 anomalies are depicted within the Project.
Regional geological data shows gentle dips and predictable stratigraphy throughout the area. Most of the mineralized channel-fill sandstones are limited by pelitic beds. Therefore, the project shows excellent in-situ uranium leach potential.
North - Environmental Report
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