Anson Resources Ltd (ASX:ASN) has reached the target depth for the start of drilling in priority Mississippian units with resource expansion drilling at the Long Canyon No. 2 well at the Paradox Lithium Project in Utah , in the USA.
The target depth at the top of the Mississippian units is 2,334 meters (7,670 feet), with drilling of these units being a key part of Anson’s resource expansion program at the Paradox project.
Anson says the Mississippian brine aquifer hosts a significant lithium-rich zone about 100 to 250 meters thick, which is significantly thicker than that of Clastic 31 in the Paradox Formation.
Conversion of exploration target
The drilling is designed to target the supersaturated brine Mississippian aquifer in this unit, with the goal of converting the previously identified exploration target into an indicated and inferred resource.
The conceptual exploration objective is 1.3 to 1.8 million tonnes of brine grading 80 to 140 ppm lithium for 104,000 to 252,000 tonnes of lithium and grading 2,000 to 3,000 ppm of bromine for 2.6 to 5.4 million tonnes.
To support DFS
Anson’s planned JORC resource upgrade will support a Definitive Feasibility Study (DFS) and development of the Paradox Project into a major lithium and bromine production operation.
Worley, a global leader in engineered solutions, undertakes DFS.
The previously sampled Clastic Zone 31 horizon has been sealed and the cast iron plugs of the abandoned well have been drilled. This will allow access to Mississippian units to collect brine samples to test for lithium and other minerals.
Drilling of the Mississippian units is expected to be completed next month and drill chips across all of the units will be collected for analysis.
Brine samples will be analyzed for lithium, bromine and other minerals and diamond drilling will be done for porosity, specific yield and permeability which are necessary for resource upgrading.
The drilling program is focused on upgrading the resources of the Paradox Project and includes a combined “eastward” and “westward” expansion strategy.
Resource expansion strategy
Anson’s resource expansion strategy is focused on:
- Vertically and horizontally augment existing JORC 2012 estimates to existing targets in the project area; and
- Define the resources to the new claims to be added next to the Paradox Lithium project.
Current drilling at the Long Canyon No. 2 well as well as planned future drilling at the Cane Creek 32-1 well allow Anson to execute the “East” component of this strategy.
The Mississippian brine aquifer has been intersected in historic oil exploration, but has only been sampled once for lithium adjacent to the project area.