- \n
- Initial Assessment over 80% complete.<\/b> SGS testing addressed a key outstanding input to the Alpha Initial Assessment. With a preferred leach reagent identified, the study is progressing toward its targeted Q1 2027 release and is designed to provide a preliminary view of the potential mine plan, production profile, capital and operating costs, and project economics, if warranted by the findings.\n<\/li>\n
- 48% relative improvement in laboratory leach recovery.<\/b> SGS achieved 40% recovery of total rare earth elements excluding cerium (TREE-Ce), versus a 27% assumption in the prior Technical Report Summary. This measures the leaching stage only, not final saleable product recovery, and reflects different test conditions. If repeatable and scalable, recovering more rare earths from the same mined material could improve project economics.\n<\/li>\n
- Valuable magnet and heavy rare earth mix.<\/b> In the tested composite, neodymium, praseodymium, dysprosium and terbium represented approximately 37% of rare earth content excluding cerium; heavy rare earths represented approximately 29%. These percentages describe the test composite, not the mineral resource.\n<\/li>\n
- Substantial resource base.<\/b> Alpha hosts an inferred mineral resource of 202 million tonnes grading 1,520 ppm TREO at a 1,000 ppm TREO cut-off (effective October 31, 2025), with magnet rare earths neodymium and praseodymium (“NdPr”) and dysprosium and terbium (“DyTb”) making up approximately 21% and 3% of the TREO basket, respectively. Inferred resources are not mineral reserves and have no demonstrated economic viability.\n<\/li>\n
- Practical processing route identified.<\/b> Ammonium sulfate was selected as the preferred leach reagent based on a balance of rare earth recovery, impurity behavior and potential operating considerations; laboratory results indicate that moderate acidity may help limit the dissolution of unwanted metals. Further test work will evaluate process performance and scale-up.\n<\/li>\n<\/ul>\n
Rare Earths Americas\u2019 CEO, Donald Swartz, commented<\/b>: \u201cAlpha combines substantial resource scale with an encouraging mix of the magnet and heavy rare earth elements needed to diversify global supply chains. These SGS results provide an important technical input to the next stage of evaluating Alpha\u2019s development potential: we recovered more rare earths during laboratory leaching than assumed in our prior technical report, although further work is required to establish overall recoveries and economics. Our Initial Assessment is over 80% complete and remains targeted for the first quarter of 2027. It should give investors an initial view of potential production, capital needs and project economics and help us define the work required to advance Alpha toward a potential development decision. Our goal is to develop commercially viable rare earth supply outside China, subject to the results of the ongoing studies, permitting and financing.\u201d<\/i><\/p>\n
BAHIA, Brazil–(BUSINESS WIRE<\/a>)–Rare Earths Americas, Inc.<\/a> (\u201cREA\u201d or the \u201cCompany\u201d) announced results from an initial series of laboratory leach tests performed by SGS on material from its Alpha Project. The tests address a key remaining input to Alpha\u2019s Initial Assessment (\u201cIA\u201d), which is over 80% complete and remains targeted for release in the first quarter of 2027. The IA is expected to evaluate a preliminary mine plan, production schedule, processing approach, capital and operating costs, and project economics; it will not by itself constitute a development or construction decision.<\/p>\n
This press release features multimedia. View the full release here: https:\/\/www.businesswire.com\/news\/home\/20261102849004\/en\/<\/a><\/p>\n
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<\/p>\nFigure 1 \u2013 Simplified process flow sheet for ionic clays, not specifically with respect to Alpha. See Appendix C for additional details.<\/p>\n<\/div>\n
\nIn the SGS tests, leach recovery of rare earth elements excluding cerium (\u201cTREE-Ce\u201d) reached 40%, compared with the 27% recovery assumption in the Company\u2019s Technical Report Summary (\u201cTRS\u201d), representing a 48% relative increase. The comparison is not like-for-like: the SGS work and TRS assumption reflect different test conditions. Put simply, the rare earth content of the clay has not changed, but the laboratory process brought more of those elements into solution. Higher leach recovery could ultimately mean more recoverable material from the same mined clay, provided subsequent process steps and larger-scale testing support it. This is not an increase in Alpha\u2019s reported mineral resource.<\/p>\n
Development pathway and upcoming catalysts.<\/b> Completion of the IA in Q1 2027 is REA\u2019s next identified Alpha milestone. The assessment is intended to help determine the scope of subsequent engineering, additional metallurgical testing, environmental and permitting work, and potential financing requirements. No construction or first-production date has been established, and any further development schedule remains subject to technical results and corporate decisions.<\/p>\n
Test work summary.<\/b> SGS evaluated the two reagents most commonly used for ionic clay deposits, ammonium sulfate and sodium chloride (table salt), across a range of reagent concentrations and pH conditions (Appendix A: Figures 2-9). The test work focused on the leaching stage of the simplified flowsheet shown in Figure 1.<\/p>\n
\nA composite sample comprising 80 individual samples, with 20 samples sourced from each of the Rio Preto, Sapucaia, Rio das Pombas, and Nova Cana\u00e3 deposits, was used for the program. The composite assayed 1,121 ppm TREE (818 ppm TREE-Ce) in the -1 mm fraction that served as feed for the leaching tests (Table 1). Additional variability testing is necessary before the results can be applied across the resource.<\/p>\n
\nThe tested composite contained an attractive mix of magnet and heavy rare earths: neodymium (Nd), praseodymium (Pr), dysprosium (Dy) and terbium (Tb) account for approximately 37% of its TREE-Ce content, while heavy rare earths account for approximately 29%. These percentages relate to the SGS test composite and should not be interpreted as the composition of the entire resource.<\/p>\n
\nSGS test work achieved a TREE-Ce leach recovery of approximately 40%. Initial testing at 20% solids established the preferred reagent (ammonium sulfate), concentration (0.25 M), and pH (4.0), with subsequent optimization work showing that the highest recovery was achieved in a 10-minute leach at 40% solids.<\/p>\n
\nThe 40% figure relates only to the leaching step, not overall recovery into mixed rare earth carbonate (\u201cMREC\u201d). Additional losses can occur during impurity removal and product production (see Figure 1). Since the results come from one laboratory composite, performance may differ by deposit or at commercial scale. The IA will assess the implications of the SGS results alongside other technical and economic assumptions; there is no assurance that improved leach recovery will translate into better project economics. The Company expects to continue leach optimization, variability testing and downstream process evaluation as it advances the IA.<\/p>\n
Why ionic clays matter.<\/b> In ionic adsorption clays, some rare earths are attached to clay surfaces rather than locked in hard rock. This can allow extraction with relatively mild solutions and potentially simpler processing, subject to deposit-specific testing and operating conditions.<\/p>\n
Why ammonium sulfate.<\/b> Although sodium chloride produced marginally higher recoveries in some tests, ammonium sulfate was selected because its established use in ionic clay leaching and the potential water-management and corrosion challenges of chloride-bearing solutions may offer a more practical overall processing route. Reagent consumption, recycling, effluent management and costs require further evaluation.<\/p>\n
Why moderate acidity.<\/b> Tests indicated a potential tradeoff: stronger acidity may dissolve more rare earths but can also draw more unwanted metals into solution and increase reagent needs. Moderately acidic conditions appeared to offer a better balance in this early work. Final process conditions have not been established. Detailed test data appear in Appendix A.<\/p>\n
About Rare Earths Americas<\/b><\/p>\n
\nRare Earths Americas, Inc. is an exploration-stage company advancing a diversified portfolio of critical mineral projects focused on rare earths in the United States and Brazil. The Company is focused on rare earth assets that contain heavy rare earths, including dysprosium and terbium, which are critical to high-performance permanent magnets and for which supply has historically been concentrated in China and Myanmar. In Brazil, REA is advancing three rare earth projects (Alpha, Constellation and Homer-A) across distinct rare earth districts, giving the Company multiple potential development pathways. Constellation, Alpha and Shiloh are the Company\u2019s three material projects. Alpha and Constellation each host inferred mineral resources, giving REA significant resource scale. The portfolio is intended to provide flexibility in development sequencing and capital allocation as technical studies advance. In the United States, REA is exploring the Foothills Rare Earths District in Georgia, which the Company believes has the potential to become a new domestic source of rare earths. Rare earth elements are essential to advanced industries including robotics, electric vehicles, energy, defense and consumer electronics.<\/p>\n
Qualified Persons:<\/b> Leandro Coracini Ollita, Qualified Person registered with the Brazilian Commission for Resources and Reserves (CBRR), Registration No. 023160, who is a \u201cqualified person\u201d within the meaning of Item 1300 of Regulation S-K (\u201cS-K 1300\u201d), has reviewed and approved the disclosure of technical information contained in this press release.<\/p>\n
Forward-Looking Statements & Technical Notes<\/b><\/p>\n
\nThis communication contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. When used in this communication, the words “plan,” “target,” “anticipate,” “believe,” “could,” \u201cdesigned to,\u201d “estimate,” \u201cevaluate,\u201d “expect,” \u201cfocused on,\u201d “intend,” “may,” \u201copportunities,\u201d “potential,” \u201cseeks,” “should,” “will,” “would” and similar expressions are intended to identify such forward-looking statements. Any express or implied statements contained in this communication that are not statements of historical fact may be deemed to be forward-looking statements.<\/p>\n
\nForward-looking statements in this communication include, but are not limited to: the scope, timing and completion of the IA for the Alpha Project, including the Company’s target of completing the IA in the first quarter of 2027; the expected incorporation of the SGS leach test results into the IA; expectations that higher leach recoveries could support higher overall metallurgical recoveries; the selection of ammonium sulfate and moderate-acidity leach conditions, and their potential effects on impurity levels, reagent consumption and downstream processing; the scope and timing of planned testwork, including leach kinetics, solids-content, variability and larger-scale leach and purification testwork; expectations regarding potential mine plans, production rates, metallurgical performance, infrastructure, permitting and preliminary project economics; the potential demand for, and strategic significance of, magnet and heavy rare earths, including supply from outside China; and the Company’s strategic objectives relating to the exploration and development of critical mineral opportunities.<\/p>\n
\nThe Alpha Project has an inferred mineral resource of 202 million tonnes at 1,520 ppm TREO at a 1,000 ppm TREO cut-off, effective October 31st<\/sup>, 2025. Inferred mineral resources are subject to a high degree of geological uncertainty and may not be converted to mineral reserves. The Company has not completed the IA and has not made a development or construction decision for Alpha. There can be no assurance that the IA will demonstrate economic viability or that the project will advance to development.<\/p>\n
\nThe leach test results described in this communication were obtained from a single composite sample under laboratory conditions and measure only the leach step. They do not reflect overall process recovery, and additional losses are expected in subsequent processing steps. The SGS results and the recovery assumed in the Company’s Technical Report Summary were produced under different test conditions and are not directly comparable. Results may not be representative of the Alpha mineral resource as a whole, and recoveries may vary across deposits and may not be achieved at larger scale or in commercial operation. There is no certainty that the IA will be completed on the anticipated schedule or within budget, that additional technical work will confirm favorable metallurgical, mining, infrastructure, environmental or permitting assumptions, or that Alpha will advance toward development. Any production, cost or economic expectations remain subject to completion of the IA and subsequent technical studies. Mineral resources that are not mineral reserves do not have demonstrated economic viability.<\/p>\n
\nThese forward-looking statements are based on assumptions and expectations that may not prove to be accurate and are subject to numerous risks and uncertainties that could cause actual results to differ materially from those described in such statements. These risks and uncertainties include, among others: geological, technical and interpretation risks; uncertainty associated with inferred mineral resources; uncertainties relating to metallurgical recovery, including variability across the deposits, scale-up from laboratory testing, solid-liquid separation and impurity removal; reagent availability and cost, including ammonium sulfate and sulfuric acid; water, effluent and environmental management, including the management of ammonium; uncertainties relating to mining methods, infrastructure, permitting and project economics; the possibility that technical studies may not achieve their objectives or may take longer or cost more than anticipated; fluctuations in rare earth commodity prices, including dysprosium, terbium, neodymium and praseodymium; changes in Chinese export controls and other trade policies; regulatory, environmental and permitting risks in Brazil; political, economic and trade-policy risks in Brazil and the United States; currency exchange-rate fluctuations between the U.S. dollar and the Brazilian real; availability of financing on acceptable terms; the Company’s need for substantial additional capital; market conditions; and general economic, political and business risks. The foregoing list is not exhaustive.<\/p>\n
\nInvestors are cautioned that mineral resources, particularly inferred mineral resources, are subject to significant uncertainty and do not constitute mineral reserves or demonstrate economic viability. The results of the IA and future technical work may differ materially from current expectations.<\/p>\n
\nFor additional information regarding factors that may cause actual results to differ materially from those indicated in our forward-looking statements, we refer you to the risk factors included in the Company\u2019s Rule 424(b)(4) Prospectus filed on May 7, 2026, the Company\u2019s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2026 and June 30, 2026, filed on June 4, 2026 and August 11, 2026, respectively, and future filings, which are or will be available at www.sec.gov<\/a>. We caution investors not to place undue reliance on the forward-looking statements contained in this communication. These statements speak only as of the date of this communication, and we undertake no obligation to update or revise these statements, whether as a result of new information, future events or otherwise, except as may be required by law.<\/p>\n
This press release does not constitute an offer to sell or the solicitation of an offer to buy any securities.<\/b><\/p>\n
Appendix A \u2013 Additional Information for SGS Leach Tests<\/b><\/p>\n
- 48% relative improvement in laboratory leach recovery.<\/b> SGS achieved 40% recovery of total rare earth elements excluding cerium (TREE-Ce), versus a 27% assumption in the prior Technical Report Summary. This measures the leaching stage only, not final saleable product recovery, and reflects different test conditions. If repeatable and scalable, recovering more rare earths from the same mined material could improve project economics.\n<\/li>\n
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