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Anson Resources confirms supersaturated brines at U.S. lithium project

The brines were intersected during re-entry drilling of the Gold Bar Unit 2 well.

Paradox Basin view
The Paradox Lithium Project is in the Lithium Four Corners area of Utah

Anson Resources Ltd (ASX:ASN) has confirmed the presence of supersaturated brines at the Paradox Lithium Project in the Lithium Four Corners area of the U.S. state of Utah.

The brines were intersected in the three clastic horizons sampled during re-entry drilling of the Gold Bar Unit 2 well.

This work was part of the first stage of Anson’s exploration at Paradox and the company is awaiting assay results for lithium and additional elements.

READ: Anson Resources gets more funding to develop lithium brine project

Bruce Richardson, managing director, said: “While assay results from sampling remain pending, confirmation that brines collected have similar characteristics to those recorded in historic assays is encouraging.”

Anson was up almost 11% to $0.205 in early trade.

The analysis of samples from Gold Bar Unit 2 well has been more complicated than expected and as a consequence, the results have been delayed.

Brines in three zones are supersaturated

Brines from the sampled horizons of clastic zones 17, 29 and 31 were all supersaturated while zone 33 was not sampled as brine did not flow.

In zone 17 the horizon weight was 11.10 pounds per gallon, in zone 29 it was 10.35 and in zone 31 it was 10.20.

This correlates with the historical data that brines within the clastic zones were supersaturated and demonstrates that the concentration of minerals in the brine is high.

Historically, the lithium-rich brines contained within zones previously sampled in the region were supersaturated, containing between 30% and 40% total dissolved solids.

Thick sample horizons

The sample horizon in zone 17 is 19 feet thick at a depth of 6,205 feet and in zone 29 it is 18 feet thick at 7,020 feet.

In zone 31, which is Anson’s primary target zone, the horizon is 22 feet thick at a depth of 7,080 feet.

A bulk sample was collected from all the clastic zones with brines from each horizon collected in IBC containers.

Processing in bench-top plant

The samples will be processed in a bench-top plant to validate earlier test work on a synthetic brine.

This showed that lithium carbonate and other products were expected to be able to be produced from the brine.

Production of first lithium carbonate from the bench-top plant is expected in April 2018.

Results from the bench-top processing will be used in the design of an in-field pilot plant, to further validate that lithium and other minerals can be extracted from the brine.

READ: Anson Resources to start brine sampling for lithium at newly acquired well

Anson is expected to start brine sampling for lithium early this month from the newly acquired Cane Creek 32-1 oil well at the Paradox project.

This well will provide an opportunity to collect additional samples and geological data to provide an understanding of the structure of the Paradox Basin.

It is also expected to help determine what controls if any, the structures have on the concentrations of lithium.

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