Rainbow Rare Earth makes high-purity mixed rare earth product in lab

Rainbow Rare Earths Ltd. reported successful lab tests producing high-purity mixed rare earth carbonate (>55% TREO vs. 42% industry benchmark) and achieving 93% feed purity via its continuous ion exchange process. This validates the Phalaborwa project's potential for very low-cost, high-margin rare earth production, with updated costings now informing its definitive feasibility study. The company anticipates robust economics, aligning with a benchmark floor price (as seen in recent US DoD offtake agreements) that projects approximately US$181 million in annual EBITDA.

Analysis

Rainbow Rare Earths has announced a significant technical milestone for its Phalaborwa project, successfully producing a high-purity mixed rare earth carbonate in lab-scale tests. The reported purity, averaging over 55% total rare earth oxides (TREO), substantially exceeds the 42% industry benchmark, while the continuous ion exchange process delivered feed at over 93% purity. These results validate the company's in-house processing flowsheet and bolster management's claims that Phalaborwa has the potential to become a very low-cost, high-margin producer. This development is strategically timed, coinciding with increasing Western government initiatives to establish independent rare earth supply chains. The company's financial outlook is supported by a reference to a floor price benchmark, similar to that in a recent US Department of Defense offtake agreement with MP Materials. Rainbow confirmed this price level was used in its December 2024 interim economic assessment, which projected approximately US$181 million in annual EBITDA, suggesting robust project economics as it advances towards a definitive feasibility study.

Key Decisions for Investors

• The successful high-purity test results significantly de-risk the project's metallurgical process, strengthening the investment case for Rainbow as a potential low-cost producer in a strategically vital sector.
• Investors should consider the reaffirmed US$181 million annual EBITDA projection as a key valuation input, noting it is based on a benchmark floor price now being implicitly endorsed by US government actions.
• The primary focus should now shift to the forthcoming definitive feasibility study (DFS), which will be the next major catalyst providing updated costings and firming up project economics.