Argentina Lithium & Energy Corp. Files Technical Report for the Rincon West Lithium Project

Argentina Lithium & Energy (OTCQX: LILIF) filed a NI 43-101 Technical Report effective Nov 27, 2025 establishing the first mineral resource estimate for the Rincon West lithium brine project in Salta, Argentina.

Rhea-AI Summary

Argentina Lithium & Energy (OTCQX: LILIF) filed a NI 43-101 Technical Report effective Nov 27, 2025 establishing the first mineral resource estimate for the Rincon West lithium brine project in Salta, Argentina.

The MRE reports M+Ind LCE 238,000 tonnes and Inferred LCE 64,000 tonnes, with corresponding KCl resources of 1,650,000 tonnes (M+Ind) and 327,000 tonnes (Inferred). Measured and Indicated brine grades and volumes are detailed in the report. The QP is Frederik Reidel, CPG. Resources are not reserves and Inferred resources lack demonstrated economic viability.

The company noted a Stellantis strategic investment giving Stellantis rights to 19.9% of ALE and a seven-year offtake of up to 15,000 t/year lithium carbonate, if commercial production begins.

Positive

• Mineral resource: M+Ind LCE 238,000 tonnes
• Inferred LCE reported: 64,000 tonnes
• Stellantis offtake right: 15,000 t/year lithium carbonate
• Stellantis strategic stake: 19.9% of ALE

Negative

• Resources not mineral reserves—no demonstrated economic viability
• Inferred resources are conceptual and lack verification
• Stellantis Exchange Right could convert to 19.9% of common shares

Argus Dec 4 session

-1.70% close to close Open Argus

Details

News Market Reaction – LILIF

On Dec 4, the first trading day after this news, LILIF closed 1.70% below the previous close.

Data tracked by StockTitan Argus for the Dec 4 session.

Key Figures

M+Ind LCE resource: 238,000 tonnes Inferred LCE resource: 64,000 tonnes M+Ind KCl resource: 1,650,000 tonnes +5 more

M+Ind LCE resource

238,000 tonnes

Rincon West Measured + Indicated Lithium Carbonate Equivalent

Inferred LCE resource

64,000 tonnes

Rincon West Inferred Lithium Carbonate Equivalent

M+Ind KCl resource

1,650,000 tonnes

Rincon West Measured + Indicated Potassium Chloride

Inferred KCl resource

327,000 tonnes

Rincon West Inferred Potassium Chloride

M+Ind Li concentration

296 mg/L

Measured + Indicated lithium concentration at Rincon West

Measured Li grade

11.9 g/m3

Measured lithium mean grade at Rincon West

Measured Li resource

40,000 tonnes

Measured lithium resource tonnage at Rincon West

M+Ind brine volume

0.15 km3

Measured + Indicated brine volume from initial MRE

Historical Context

5 past events · Latest: Dec 03

5 events

1. Dec 03

   Technical report filing

   24h Move

   -1.7%

   Filed NI 43-101 report supporting first Rincon West mineral resource.

2. Nov 06

   Corporate update letter

   24h Move

   +6.9%

   President letter outlined Rincon West progress and early 2026 PEA plan.

3. Oct 22

   Initial resource estimate

   24h Move

   -7.0%

   Announced maiden Rincon West MRE with Measured, Indicated and Inferred LCE.

4. Aug 13

   Option amendment

   24h Move

   +13.9%

   Amended Amelia Option terms, setting payments and required project investments.

5. Jul 23

   Option amendment

   24h Move

   +8.9%

   Extended Paso de Sico payment deadline with added share-based extension fee.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

ni 43-101, technical report, mineral resource estimate, lithium carbonate equivalent (lce), +2 more

6 terms

ni 43-101 regulatory

"Argentina Lithium is pleased to announce the filing of the NI 43-101 Technical Report"

A Canadian regulatory standard that sets the rules for how mining and exploration companies must report mineral resources and reserves, requiring technical reports prepared or signed off by an independent, certified expert. It matters to investors because it creates a consistent, transparent “inspection report” for mining projects, making it easier to compare prospects, judge the reliability of claims, and assess geological and financial risk before investing.

technical report technical

"the filing of the NI 43-101 Technical Report (the "Report") supporting disclosure"

A technical report is a detailed, expert-written document that explains the methods, data, results and risks behind a company’s engineering, scientific or operational claim — for example estimates of resources, product testing, or project feasibility. Investors use it like an independent inspection or blueprint: it reveals how solid the underlying work is, what assumptions were made and what could go wrong, helping assess value and risk before committing money.

mineral resource estimate technical

"supporting disclosure of the first mineral resource estimate ("MRE") for the Rincon West"

A mineral resource estimate is a calculated approximation of how much metal or mineral material likely exists in a particular deposit and where it sits underground, similar to estimating how many cookies are in a jar by peeking at the layers. It matters to investors because it provides a data-based starting point for judging a project's potential value, future production and risks, while not guaranteeing recoverable or profitable amounts.

lithium carbonate equivalent (lce) technical

"Table 2 shows the Project's mineral resources expressed as Lithium Carbonate Equivalent (LCE)"

Lithium carbonate equivalent (LCE) is a common unit that converts all forms of lithium — like lithium hydroxide or spodumene concentrate — into the amount that would be contained in lithium carbonate, so different products and deposits can be compared on the same scale. Investors use LCE to compare mine resources, production targets and supply forecasts much like converting different currencies into a single one, which helps assess potential revenue, market share and exposure to battery demand.

potassium chloride (kcl) technical

"Table 2 shows the Project's mineral resources expressed as Lithium Carbonate Equivalent (LCE) and Potassium Chloride (KCl)."

Potassium chloride (KCl) is a simple salt used as a medical electrolyte to treat or prevent low blood potassium, commonly delivered in pills or intravenous fluids, and also widely used as a fertilizer and industrial chemical. For investors, KCl matters because its availability, price, and regulatory status affect healthcare supplies, drug manufacturing and agricultural input costs—so changes in production, approvals, or shortages can influence revenues and margins for companies across those sectors.

qualified person regulatory

"The Qualified Person for this Mineral Resource estimate is Frederik Reidel, CPG."

A qualified person is someone with specialized knowledge, experience, and training in a particular field, allowing them to accurately assess and verify information or work. Their expertise helps ensure that reports, evaluations, or decisions are trustworthy and meet required standards. For investors, a qualified person provides confidence that the information they rely on is credible and properly validated.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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TSX Venture Exchange (TSX-V): LIT
Frankfurt Stock Exchange (FSE): OAY3
OTCQX Venture Market: LILIF

VANCOUVER, BC, Dec. 3, 2025 /PRNewswire/ - Argentina Lithium & Energy Corp. (TSXV: LIT) (FSE: OAY3) (OTCQX: LILIF), ("Argentina Lithium" or the "Company") is pleased to announce the filing of the NI 43-101 Technical Report (the "Report") supporting disclosure of the first mineral resource estimate ("MRE") for the Rincon West lithium brine project in Salta Province, Argentina ("Rincon West" or the "Project"), as reported on October 22, 2025. Tables 1 and 2 summarize the MRE. 

The Report, titled "Mineral Resource Estimate - Rincon West Project, Salta, Argentina" with an effective date of November 27, 2025 is available under the Company's profile on SEDAR+ at www.sedarplus.ca and will be posted to the Company's website www.ArgentinaLithium.com.

Table 1 presents the Project's mineral resources, volumes and grades by resource category for lithium and potassium. Table 2 shows the Project's mineral resources expressed as Lithium Carbonate Equivalent (LCE) and Potassium Chloride (KCl). 

Table 1. Lithium and Potassium Mineral Resources at the Rincon West Project

	Measured (M)		Indicated (Ind)		M + Ind		Inferred (Inf)
	Li	K	Li	K	Li	K	Li	K
Aquifer volume (km3)	3.36		0.97		4.33		3.05
Mean specific yield (Sy)	0.04		0.02		0.04		0.03
Brine volume (km3)	0.14		0.02		0.15		0.08
Mean grade (g/m3)	11.9	229.2	4.9	94.0	11.1	214.8	3.8	71.6
Concentration (mg/l)	297	5,776	295	5,686	296	5,756	216	4,085
Resource (tonnes)	40,000	770,000	5,000	92,000	45,000	862,000	12,000	219,000

Notes to the resource estimate (Table 1):

1. CIM definitions were followed for Mineral Resources.
2. The Qualified Person for this Mineral Resource estimate is Frederik Reidel, CPG. 
3. No cut-off values have been applied to the resource estimate.
4. Numbers may not sum exactly due to rounding.

Table 2. Lithium Carbonate Equivalent ("LCE") and Potassium Chloride ("KCl") Mineral Resources

	Measured (M)		Indicated (Ind)		M+Ind		Inferred (Inf)
	LCE	KCl	LCE	KCl	LCE	KCl	LCE	KCl
Concentration (mg/l Li or K)	297	5,776	295	5,686	296	5,756	216	4,085
Resource (tonnes)	212,800	1,470,700	26,600	175,720	238,000	1,650,000	64,000	327,000

Notes to Table 2

1. Lithium is converted to lithium carbonate (Li₂CO₃) with a conversion factor of 5.32.
2. Potassium is converted to potassium chloride with a conversion factor of 1.91.
3. Numbers may not sum exactly due to rounding.

The effective date of the Mineral Resource estimate is November 27, 2025.

Cautionary Statement Regarding Mineral Resources

The mineral resources disclosed in this press release conform to NI 43-101 standards and guidelines and were prepared by an independent qualified person. The above-mentioned mineral resources are not mineral reserves as they do not have demonstrated economic viability. The quantity and grade of the reported Inferred Mineral Resources are conceptual in nature and are estimated based on limited geological and hydrogeological evidence and sampling. Existing data are sufficient to imply but not verify mineral grade and/or quality of continuity. An Inferred Mineral Resource has a lower level of confidence relative to a Measured or Indicated Mineral Resource and constitutes an insufficient level of confidence to allow conversion to a Mineral Reserve. It is reasonably expected, but not guaranteed, that the majority of Inferred Mineral Resources could be upgraded to Measured or Indicated Mineral Resources with additional drilling and pump tests.

Stellantis Investment and Off-take

In September 2023, Argentina Lithium & Energy Corp. entered into a definitive agreement with Stellantis, a leading global automaker, for a strategic investment through Stellantis' subsidiary Peugeot Citroen Argentina S.A., in return for a 19.9% stake in ALE, with Argentina Lithium retaining 80.1%. The agreement includes an Exchange Right allowing Stellantis to convert its ALE shares into up to 19.9% of Argentina Lithium's common shares (undiluted), subject to certain conditions and a Top-Up Right to maintain that ownership threshold. Additionally, the parties executed a seven-year lithium offtake agreement, under which Stellantis will have the right to purchase up to 15,000 tonnes of lithium carbonate per year, if and once commercial production begins, with options for extension and rights of first refusal on surplus product.

Qualified Persons and QA/QC

The Mineral Resource Estimate and technical data in this news release were prepared under the direction of Frederik Reidel, CPG, of Atacama Water Consultants. Mr. Reidel is an independent Qualified Person ("QP") as defined in NI 43-101. Mr. Reidel reviewed drill and brine sample collection, handling, and security practices for all drilling and sampling campaigns. All conform to industry best practice. The QP has reviewed and approved the technical content of this news release.

About Argentina Lithium

Argentina Lithium & Energy Corp is focused on acquiring high quality lithium projects in Argentina and advancing them towards production in order to meet the growing global demand from the battery sector. The strategic investment in the Company by Peugeot Citroen Argentina S.A., a subsidiary of Stellantis N.V., one of the world's leading automakers, has helped Argentina Lithium to advance its four key projects covering over 67,000 hectares in the Lithium Triangle of Argentina. Management has a long history of success in the resource sector of Argentina and has assembled some of the most prospective lithium properties in the world-renowned "Lithium Triangle". The Company is a member of the Grosso Group, a resource management group that has pioneered exploration in Argentina since 1993.

ON BEHALF OF THE BOARD

"Nikolaos Cacos"

_______________________________

Nikolaos Cacos, President, CEO and Director

www.argentinalithium.com

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This news release contains forward-looking statements. Generally, forward-looking statements can be identified by the use of terminology such as "anticipate", "will", "expect", "may", "continue", "could", "estimate", "forecast", "plan", "potential" and similar expressions. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. All statements, other than statements of historical fact, that address activities, events or developments management of the Company believes, expects or anticipates will or may occur in the future, including, without limitation, statements about the Company's plans for its mineral properties; the Company's business strategy, plans and outlooks; the future financial or operating performance of the Company; and future exploration and operating plans are forward-looking statements.

Forward-looking statements are subject to a number of risks and uncertainties that may cause the actual results of the Company to differ materially from those discussed in the forward-looking statements and, even if such actual results are realized or substantially realized, there can be no assurance that they will have the expected consequences to, or effects on, the Company. Accordingly, readers should not place undue reliance on the forward-looking statements. Factors that could cause actual results or events to differ materially from current expectations include, among other things: risks and uncertainties related to the ability to obtain, amend, or maintain licenses, permits, or surface rights; risks associated with technical difficulties in connection with mining activities; the possibility that future exploration, development or mining results will not be consistent with the Company's expectations; the state of financial markets in Canada and other jurisdictions; the Company's ability to meet its working capital needs; fluctuations in metal prices; operations in foreign countries and the compliance with foreign laws; environmental regulations or hazards and compliance with regulations associated with mining activities; climate change and climate change regulations; fluctuations in foreign currency exchange rates; failure to obtain or delays in obtaining necessary governmental and regulatory approvals; labour disputes and other risks generally in the mining industry. There may be other factors that cause results or events to not be as anticipated. Actual results may differ materially from those currently anticipated in such statements. Readers are encouraged to refer to the Company's Management's Discussion and Analysis for a more detailed discussion of factors that may impact expected future results. The forward-looking statements contained in this press release are made as of the date hereof or the dates specifically referenced in this press release, where applicable. The Company undertakes no obligation to publicly update or revise any forward-looking statements, unless required pursuant to applicable laws. All forward-looking statements contained in this press release are expressly qualified by this cautionary statement.

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SOURCE Argentina Lithium & Energy Corp.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What mineral resources did Argentina Lithium (LILIF) report for Rincon West on Nov 27, 2025?

The NI 43-101 reports M+Ind LCE 238,000 tonnes and Inferred LCE 64,000 tonnes at Rincon West.

Who prepared the Rincon West mineral resource estimate for LILIF and what standard was used?

The estimate was prepared by QP Frederik Reidel, CPG and conforms to NI 43-101 standards.

What are the terms of Stellantis' investment and offtake with Argentina Lithium (LILIF)?

Stellantis holds a 19.9% ALE stake with an Exchange Right into up to 19.9% of common shares and a seven-year offtake of up to 15,000 t/year lithium carbonate once commercial production begins.

Are the reported Rincon West resources equivalent to proven reserves for LILIF investors?

No—reported mineral resources are not mineral reserves and Inferred resources lack demonstrated economic viability.

Where can investors access the full Rincon West NI 43-101 report for LILIF?

The NI 43-101 Technical Report (effective Nov 27, 2025) is available on SEDAR+ and the company's investor website.