Anson Resources Ltd (ASX:ASN, OTCQB:ANSNF) has fielded strong assay results from brine testing at the new Bosydaba#1 well of the Green River Lithium Project in Utah, US, confirming the Mississippian Units on the tenure are rich in lithium and bromine.
The brine assayed up to 139 parts per million (ppm) lithium and 4,604 ppm bromine, offering similar results to that of the nearby Paradox Lithium Project’s JORC-compliant mineral resource.
Massive, super supersaturated aquifer
According to Anson, the Mississippian Units at Green River stretch about 790 metres thick, with lower salt concentrations (low in iron, magnesium, calcium, potassium and boron) that should be beneficial to the lithium extraction process.
The latest round of drilling also confirmed Anson’s modelling and interpretations, demonstrating the presence of a massive, supersaturated brine aquifer with high pressure of about 5,100 pounds of force per square inch (psi).
The well will remain open for testing and production of samples for off-take partners, to be provided at the Green River Sample Demonstration Plant.
Anson intends to feed these samples into a production flow sheet design while also creating large amounts of battery-grade material for testing and partnership negotiations.
More accurate results
The significance of the availability of fresh brine from Bosydaba#1 well is that it is expected that the test results to be fed into the production flow sheet design will be more accurate as the brine will be as near as possible to that to be used in production.
In addition, it will also be possible to produce larger amounts of battery-grade material for testing by offtake partners.
The lithium value is 40% higher than the assay used as the minimum value in the lithium grade range and the bromine grade is 177% higher than the maximum value in the bromine grade range used in the initial exploration target calculations for the Green River Lithium Project.
In addition, the thickness of the Mississippian is 263% higher than what was used in the calculation.