Melrose Leaching Test Work Generates up to 90% Scandium Recoveries

Rimfire Pacific Mining (ASX: RIM, “Rimfire” or “the Company”) is pleased to advise that 2 further leaching tests conducted on scandium - mineralised laterite material from the Melrose prospect have significantly improved the recovery of scandium into solution compared to previous leaching tests.

Highlights

• Two further sighter leach tests focused on maximising scandium recovery at atmospheric pressures from Melrose laterite-hosted mineralisation returns recoveries of 62.6% and 90.1% scandium respectively
• Latest results represent significant improvement on previous best scandium recovery of 40%
• Improvement in scandium recovery attributed to increased acidity (sulphuric acid) and addition of reagents (NaCl)
• Rimfire has engaged highly experienced hydrometallugist Mr Boyd Willis as Process Consultant to guide future metallurgical studies
• All activities fully funded by Rimfire’s exploration partner - GPR

Commenting on the announcement, Rimfire’s Managing Director Mr David Hutton said: “The results of the further sighter leach tests are highly encouraging and build on the previous test results.

Having demonstrated that we can recover up to 90.1% of the scandium into a “pregnant” solution by leaching Melrose mineralised material at atmospheric pressures, our attention is now turning to maximising the extraction of scandium from solution.

Rimfire is conducting a review of existing publicly available extraction technologies and has engaged highly experienced hydrometallugist Mr Boyd Willis as Process Consultant to guide this work.

Mr Willis’ engagement provides Rimfire with invaluable metallurgy capability to complement our highly experienced geological team. We feel that the latest metallurgical results together with recent drilling results from the Murga and Melrose Scandium Prospects, as well as the calibre of our technical team, reinforce Rimfire’s position as unique ASX exposure to scandium”.

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