CENTURY LITHIUM ACHIEVES HIGH RECOVERY OF RARE EARTH AND CRITICAL ELEMENTS FROM PRIMARY LEACH SOLUTIONS

Rhea-AI Summary

Century Lithium (OTCQX: CYDVF) reported positive test results showing high recoveries of rare earth elements (REEs) and critical metals from primary lithium leach solutions at its 100%‑owned Angel Island project in Nevada.

Ion‑exchange testing achieved greater than 97% recovery of identified REEs and critical metals (excluding cesium) while maintaining complete selectivity against lithium, preserving downstream lithium recovery via the company's ultrafiltration and DLE flowsheet. The company said this milestone could enable a REE‑rich by‑product without impacting core lithium production and may enhance Angel Island economics and North American critical‑minerals supply.

Positive

• >97% recovery for identified REEs and critical metals (excluding cesium)
• Complete selectivity against lithium preserved lithium downstream recovery
• Potential REE by‑product could add secondary value to Angel Island economics
• Qualified person (Todd Fayram) approved technical information

Negative

• None.

News Market Reaction – CYDVF

+5.90%

1 alert

+5.90% News Effect

On the day this news was published, CYDVF gained 5.90%, reflecting a notable positive market reaction.

Data tracked by StockTitan Argus on the day of publication.

Key Figures

REE recovery rate: >97%

1 metrics

REE recovery rate >97% Ion-exchange test work for REEs and critical metals (excluding cesium)

Market Reality Check

Price: $0.3778 Vol: Volume 167,628 vs 20-day ...

normal vol

$0.3778 Last Close

Volume Volume 167,628 vs 20-day average 114,610 (relative volume 1.46x). normal

Technical Price 0.2183 is trading above 200-day MA at 0.22.

Peers on Argus

CYDVF showed a 3.17% gain while several peers in Other Industrial Metals & Minin...

CYDVF showed a 3.17% gain while several peers in Other Industrial Metals & Mining were down (PGZFF -2.29%, REMRF -3.02%, SGPTF -3.91%, NILIF -5.71%), indicating a more stock-specific move.

Historical Context

5 past events · Latest: Dec 09 (Neutral)

Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
Dec 09	Management change	Neutral	-0.9%	CFO announced departure and interim CFO appointment at the company.
Dec 02	Technical milestone	Positive	+5.9%	High REE and critical metal recoveries from Angel Island leach solutions.
Nov 24	Project development update	Positive	+0.0%	Angel Island permitting progress, feasibility study updates, and plant relocation.
Oct 27	Operational relocation	Positive	+0.3%	Relocation of lithium extraction demonstration plant to Tonopah facility.
Oct 20	Product milestone	Positive	+0.9%	First production of high-purity lithium hydroxide at demonstration plant.

Pattern Detected

Recent Angel Island and process milestones have generally been followed by modest positive or flat price reactions, suggesting the market responds constructively to technical progress updates.

Recent Company History

Over the last few months, Century Lithium has focused on advancing its 100%-owned Angel Island project and related processing technology. It reported high REE recoveries from leach solutions on Dec 02, 2025, plant relocation to Tonopah on Oct 27, 2025, and first lithium hydroxide production on Oct 20, 2025. These technical milestones saw small positive or flat price moves, while a later CFO transition announcement on Dec 09, 2025 coincided with a slight decline.

Market Pulse Summary

The stock moved +5.9% in the session following this news. A strong positive reaction aligns with pri...

Analysis

The stock moved +5.9% in the session following this news. A strong positive reaction aligns with prior technical milestones at Angel Island, where REE recovery news previously coincided with a 5.9% gain. The ability to recover >97% of REEs without affecting lithium recovery reinforced the project’s multi-commodity potential. However, investors could weigh this against the stock’s position about 43.15% below its 52-week high and the risk that enthusiasm for metallurgical advances may fade without corresponding commercial or permitting progress.

Key Terms

rare earth elements, ion-exchange, direct lithium extraction, ultrafiltration, +1 more

5 terms

rare earth elements technical

"contains notable concentrations of REEs, including dysprosium, gadolinium, neodymium"

Rare earth elements are a set of 17 chemical metals used to make powerful magnets, batteries, catalysts and many tiny components inside electronics, renewable energy equipment and defense systems. They matter to investors because they are essential inputs for fast‑growing industries, and limited or concentrated supply can drive prices, create production bottlenecks or shift competitive advantage — like a factory running short of a specialized ingredient that halts output and affects profits.

ion-exchange technical

"Ion-exchange test work achieved greater than 97% recovery of the identified REEs"

A chemical process where charged particles (ions) are swapped between a liquid and a solid material that holds opposite charges, like a water filter that trades unwanted ions for harmless ones. Investors care because ion-exchange is used across industries—from water treatment and chemical manufacturing to pharmaceuticals and batteries—and can affect a company’s costs, product quality, regulatory compliance and market opportunity, similar to how a more efficient filter lowers operating expenses and expands output.

direct lithium extraction technical

"process flowsheet, which includes ultrafiltration, direct lithium extraction ("DLE")"

A method for pulling lithium directly out of salty water or other raw sources using special materials and electrical or chemical processes, instead of relying on long evaporation ponds or mining rock. It matters to investors because it can speed up production, lower costs and environmental impact, and make lithium supply for batteries more reliable—like replacing a slow, weather-dependent harvest with a faster, machine-driven picker that boosts output and predictability.

ultrafiltration technical

"process flowsheet, which includes ultrafiltration, direct lithium extraction ("DLE")"

Ultrafiltration is a process that separates small particles and liquids from larger molecules or substances using a filter with tiny pores. It is often used in water treatment and medical applications to remove impurities or excess fluids. For investors, understanding ultrafiltration is important because innovations or changes in this technology can impact industries focused on clean water, healthcare, and filtration products.

National Instrument 43-101 regulatory

"qualified person as defined by National Instrument 43-101 and has approved"

National Instrument 43-101 is a set of rules and guidelines that govern how mineral exploration and mining companies must report information about their projects. It ensures that the details shared with investors are accurate, consistent, and reliable—similar to how a detailed, verified blueprint ensures a building’s safety. This helps investors make informed decisions based on trustworthy information about a company's mineral resources.

AI-generated analysis. Not financial advice.

VANCOUVER, BC, Dec. 2, 2025 /PRNewswire/ - Century Lithium Corp. (TSXV: LCE) (OTCQX: CYDVF) (Frankfurt: C1Z) ("Century Lithium" or "the Company") is pleased to report positive results from its ongoing test work on the recovery of rare earth elements ("REEs") from primary lithium leach solutions generated from its 100%-owned Angel Island lithium project in Nevada, USA. The initial testing indicates that high REE recoveries can be achieved without impacting lithium recovery in Century Lithium's extraction process.

"The REE recovery results validate our belief that Century Lithium's leach solutions offer meaningful secondary-value opportunities," said Todd Fayram, Century Lithium's Senior Vice President, Metallurgy. "Producing a secondary REE-rich product has the potential to strengthen Angel Island's economics and align the Company with broader government and industry initiatives supporting secure North American critical-minerals supply chains."

Century Lithium previously confirmed that the leach solutions produced from Angel Island claystone contain notable concentrations of REEs, including dysprosium, gadolinium, neodymium, and praseodymium, as well as higher concentrations of the critical metals scandium, lanthanum, and cerium. Cesium is also present.

Ion-exchange test work achieved greater than 97% recovery of the identified REEs and critical metals, excluding cesium, while maintaining complete selectivity against lithium. This selectivity is essential for downstream lithium recovery through the Company's process flowsheet, which includes ultrafiltration, direct lithium extraction ("DLE") and subsequent steps to produce high-purity lithium carbonate.

The Company's metallurgical program at Angel Island continues to focus on the following:

• Optimizing ion-exchange performance and selectivity
• Advancing downstream processing flowsheets for REE concentration and refinement
• Evaluating market pathways for a commercial REE by-product
• Assessing the economic contribution of REEs to primary lithium production

These results represent a significant technical milestone, demonstrating that REE extraction and recovery can be implemented without affecting the Company's core lithium recovery process.   Century Lithium believes these advancements position the Company to potentially supply both lithium and REEs to North American critical minerals markets, supporting supply-chain resilience and enhancing long-term project value for Angel Island.

Qualified Person

Todd Fayram, MMSA-QP and Senior Vice President, Metallurgy of Century Lithium is the qualified person as defined by National Instrument 43-101 and has approved the technical information in this release.

ABOUT CENTURY LITHIUM CORP.

Century Lithium Corp. is an advanced-stage lithium company, focused on developing its 100%-owned lithium project Angel Island in Esmeralda County, Nevada, which hosts one of the largest sedimentary lithium deposits in the United States. The Company has utilized its patent-pending process for chloride leaching combined with direct lithium extraction to make battery-grade lithium carbonate product samples from Angel Island's lithium-bearing claystone at its Demonstration Plant in Amargosa Valley, Nevada.

Angel Island is one of the few advanced lithium projects in development in the United States to provide an end-to-end process to produce battery-grade lithium carbonate for the growing electric vehicle and battery storage market. Angel Island is currently in the permitting stage for a three-phase feasibility-level production plan, expected to yield an estimated life-of-mine average of 34,000 tonnes per year of lithium carbonate over a 40-year mine-life.

Century Lithium trades on both the TSX Venture Exchange under the symbol "LCE" and the OTCQX under the symbol "CYDVF", and on the Frankfurt Stock Exchange under the symbol "C1Z".

To learn more, please visit centurylithium.com. 

ON BEHALF OF CENTURY LITHIUM CORP.

WILLIAM WILLOUGHBY, PhD., PE
President & Chief Executive Officer

centurylithium.com 

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE CONTENT OF THIS NEWS RELEASE.

Cautionary Note Regarding Forward-Looking Statements

This release contains certain forward-looking statements within the meaning of applicable Canadian securities legislation. In certain cases, forward-looking statements can be identified by the use of words such as "plans", "expects" or "does not anticipate", or "believes", or variations of such words and phrases or statements that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved" and similar expressions suggesting future outcomes or statements regarding an outlook.

Forward-looking statements relate to any matters that are not historical facts and statements of our beliefs, intentions and expectations about developments, results and events which will or may occur in the future, without limitation, statements with respect to the potential development and value of the Project and benefits associated therewith, statements with respect to the expected project economics for the Project, such as estimates of life of mine, lithium prices, production and recoveries, capital and operating costs, IRR, NPV and cash flows, any projections outlined in the Feasibility Study in respect of the Project, the permitting status of the Project and the Company's future development plans.

These and other forward-looking statements and information are subject to various known and unknown risks and uncertainties, many of which are beyond the ability of the Company to control or predict, that may cause their actual results, performance or achievements to be materially different from those expressed or implied thereby, and are developed based on assumptions about such risks, uncertainties and other factors set out herein. These risks include those described under the heading "Risk Factors" in the Company's most recent annual information form and its other public filings, copies of which can be under the Company's profile at www.sedarplus.com. The Company expressly disclaims any obligation to update-forward-looking information except as required by applicable law. No forward-looking statement can be guaranteed, and actual future results may vary materially. Accordingly, readers are advised not to place reliance on forward-looking statements or information. Furthermore, Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.

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SOURCE Century Lithium Corp.

FAQ

What REE recovery did Century Lithium (CYDVF) report on Dec 2, 2025?

Ion‑exchange testing achieved greater than 97% recovery of identified REEs and critical metals, excluding cesium.

Does the REE recovery at Angel Island affect lithium recovery for CYDVF?

No — testing maintained complete selectivity against lithium, preserving downstream lithium recovery.

Which rare earths and critical metals were identified in Angel Island leach solutions?

Reported elements include dysprosium, gadolinium, neodymium, praseodymium, scandium, lanthanum, cerium and cesium.

How could REE recovery impact Angel Island project economics for CYDVF?

The company states a REE‑rich by‑product has the potential to strengthen project economics and supply North American critical minerals.

What next steps did Century Lithium announce after the REE test results?

The program will optimize ion‑exchange selectivity, advance REE downstream flowsheets, evaluate commercial pathways, and assess economic contribution.

Who approved the technical information in Century Lithium's Dec 2, 2025 release?

Todd Fayram, MMSA‑QP and Senior Vice President, Metallurgy, is the qualified person who approved the technical information.