Godolphin Resources (ASX:GRL) has received the final batch of results from the second phase program of leach testing and size fraction analysis undertaken at the Narraburra Rare Earth Element Project in central west New South Wales.
The analysis was undertaken by the Australian Nuclear Science and Technology Organisation (ANSTO) from 15 composite samples representative of mining intervals.
Narraburra hosts a Mineral Resource Estimate (MRE) of 94.9 million tonnes at 739ppm TREYO, which includes a higher grade component of 20Mt at 1,079ppm TREYO in accordance with JORC (2012.
Managing Director Jeneta Owens says the latest results support the initial high-grade leach results from 2023 based on individual 1m samples.
“And now we have achieved exceptional +90% recoveries on composite samples that resemble actual mining intervals. These results demonstrate the excellent leachability of the important magnet minerals from the Narraburra deposit that are an essential component to all electric motors and used widely across the world.
Along with the recovery rates, Godolphin is also pleased to report excellent results from the first round of size fraction work that have shown we can achieve a significant REE upgrade in the fine fractions. These include the targeted magnet elements, which point to an opportunity to upgrade the feed to leaching, which could have a positive effect on the project’s financials.”
Godolphin’s exploration team selected 15 composite samples from across the Narraburra Project area and down the REE mineralised profile of 2 holes.
Sample preparation at ANSTO was to crush and screen each of the composite samples to 100% passing a 2mm screen to break up the clays. The crushed samples were split to provide a 1kg subsample for leach testing, and a 2kg subsample for size fraction analysis.
The remaining material has been retained for future mineralogical work.
Write to Adam Orlando at Mining.com.au
