Jaguar Uranium Initiates Exploration Plan at Huemul Project; Argentina's Historic Critical Metals Mining District

Jaguar Uranium (NYSE-AM: JAGU) has initiated an initial exploration plan at the 27,700-hectare Huemul Project in Mendoza Province, Argentina, centered on Argentina’s historic Huemul uranium mine.

Rhea-AI Summary

Jaguar Uranium (NYSE-AM: JAGU) has initiated an initial exploration plan at the 27,700-hectare Huemul Project in Mendoza Province, Argentina, centered on Argentina’s historic Huemul uranium mine. Historic processing totaled 130,000 tonnes with head grades of 0.21% U, 2.0% Cu, 0.11% V. The company cites alignment with the U.S.–Argentina Critical Minerals Framework (Feb 4, 2026) and a Collaboration Agreement with Mendoza’s Ministry (Mar 4, 2026). A two-phase program (data verification, district-scale prospecting) will start pending an Environmental Baseline Study submission targeted for May 2026 and regulatory approvals.

Positive

• 27,700-hectare district-scale land package
• 130,000 tonnes historic ore processed at Malargue plant
• Historic head grades: 0.21% U, 2.0% Cu, 0.11% V
• Collaboration Agreement with Mendoza Ministry signed Mar 4, 2026
• Referenced in U.S.–Argentina Critical Minerals Framework signed Feb 4, 2026

Negative

• Environmental baseline submission and approvals required before fieldwork
• Historic production not verified by a Qualified Person under SEC rules
• Potential U.S. financing pathways subject to eligibility and approval
• Historic production ceased in mid-1970s, reportedly due to low uranium prices

Argus Apr 14 session

-2.55% close to close Open Argus

Details

News Market Reaction – JAGU

On Apr 14, the day this news came out, JAGU closed 2.55% below the previous close.

Data tracked by StockTitan Argus for the Apr 14 session.

Key Figures

Ore processed historically: 130,000 tonnes Historic uranium grade: 0.21% uranium Historic copper grade: 2.0% copper +5 more

Ore processed historically

130,000 tonnes

Historic Huemul mine production over 20 years

Historic uranium grade

0.21% uranium

Historic head grade at Huemul mine

Historic copper grade

2.0% copper

Historic head grade at Huemul mine

Historic vanadium grade

0.11% vanadium

Historic head grade at Huemul mine

Property size

27,700 hectares

Huemul uranium-copper-vanadium district in Mendoza Province

Operating history

20 years

Historic Huemul mine operating period from 1955 to 1975

Collaboration term

One year

Initial term of Mendoza Collaboration Agreement, renewable by mutual consent

Berlin project area

9,053 hectares

Berlin Project size from prior March 17, 2026 news

Historical Context

5 past events · Latest: Mar 17

5 events

1. Mar 17

   REE assessment launch

   24h Move

   -2.4%

   Initiated rare earth element assessment at Berlin via historic core re-sampling.

2. Mar 10

   Exploration strategy plan

   24h Move

   -5.7%

   Outlined 2026 exploration focus and field work across Argentina and Colombia.

3. Mar 10

   Exploration strategy detail

   24h Move

   -5.7%

   Detailed steps toward potential initial resources and two-year exploration funding.

4. Mar 04

   Mendoza collaboration

   24h Move

   +5.4%

   Signed framework with Mendoza ministry for cooperation on Jaguar’s properties.

5. Mar 04

   Mendoza collaboration

   24h Move

   +5.4%

   Announced one-year renewable collaboration on technical and community practices.

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

Key Terms

environmental baseline study, sandstone-hosted deposit, critical minerals, royalties, +1 more

5 terms

environmental baseline study regulatory

"Exploration activity is expected to commence following submission and acceptance of the environmental baseline study"

A study that documents current environmental conditions—such as air and water quality, wildlife, soil and vegetation—at a site before a project or investment begins. Like a medical checkup for land, it creates a baseline to spot future changes, identify cleanup or mitigation needs, and satisfy regulators; investors use it to estimate permitting hurdles, potential remediation costs, timeline risks and impacts on project value or public support.

sandstone-hosted deposit technical

"hosts uranium-vanadium-copper mineralization in a classic sandstone-hosted deposit setting"

A sandstone-hosted deposit is a concentration of valuable minerals or metals trapped within porous sandstone rock, where the stone’s texture and layers act like a sponge and pipeline that collected and preserved mineral-rich fluids long ago. Investors care because the rock type controls how easy and cheap the minerals are to find, extract and process, and it influences the size, grade, environmental footprint and predictability of a mining project.

critical minerals technical

"Framework Instrument for Securing of Supply in the Mining and Processing of Critical Minerals"

Materials needed to build modern technologies—like batteries, electronics, renewable energy systems and defense equipment—that have few easy substitutes and often come from a small number of countries or mines. Investors care because their supply can be disrupted, expensive or slow to increase, which affects the cost, availability and growth prospects of companies and industries that rely on them; think of them as critical spare parts for the global economy.

royalties financial

"net smelter returns royalties and rights to receive additional shares in certain circumstances"

Payments made to the owner of an asset or intellectual property each time that asset is used or a product is sold, often calculated as a percentage of sales or a set amount per unit. Royalties matter to investors because they create predictable, ongoing income streams and affect a company’s cash flow and valuation—like a landlord collecting rent or an author getting a steady cut whenever a book is sold.

net smelter returns royalties financial

"net smelter returns royalties and rights to receive additional shares in certain circumstances"

A net smelter returns (NSR) royalty is a share of the money a miner receives from selling metal or mineral products, paid to the owner of the land or mineral rights and calculated after deducting costs like smelting, refining and transport. Think of it as a landlord taking a fixed percentage of the tenant’s net sales rather than rent; for investors, NSR royalties reduce a mine’s cash flow and project value because they are an ongoing production-based cost that lowers profits and affects valuation and deal terms.

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• 130,000 tonnes processed over 20 years with historic head grades of 0.21% uranium, 2.0% copper, and 0.11% vanadium highlight the polymetallic nature of the district.
• 27,000 Ha, district-scale exploration property in mining-friendly Mendoza Province, formerly a producing mine for twenty years
• U.S. Critical Minerals Policy - Uranium, copper & vanadium key to U.S.-Argentina Framework Instrument for Securing Critical Minerals Supply Agreement
• U.S. Financing Access: Potential to secure various U.S. Government funding sources including Department of War, State, Energy, Commerce and other trade-related programs, subject to eligibility, application and approval requirements.
• Exploration activity is expected to commence following submission and acceptance of the environmental baseline study, subject to receipt of applicable regulatory approval.

TORONTO, April 14, 2026 /PRNewswire/ - Jaguar Uranium Corp. (NYSE-AM: JAGU) ("Jaguar" or the "Company") announces the formal initiation of its initial exploration plan at the Huemul Project — a 27,700-hectare uranium-copper-vanadium district in Mendoza Province, Argentina, centered on Argentina's first-ever producing uranium mine. This comes against a backdrop of two recent landmark developments that directly validate Jaguar's position: the U.S.–Argentina Framework Instrument for Securing Critical Minerals Supply — signed February 4, 2026 at the Critical Minerals Ministerial in Washington, and Jaguar's own Collaboration Agreement with the Ministry of Energy and Environment of the Province of Mendoza, signed March 4, 2026 (the "Collaboration Agreement"), establishing formal government-to-company cooperation across the Company's Mendoza properties.

The Huemul Project is a 27,000 Ha district-scale, exploration and former operating property in the mining-friendly Malargue area in the Province of Mendoza. The project is anchored by the historic Huemul mine, commissioned in 1955 and operated continuously until 1975 by Argentina's Comisión Nacional de Energía Atómica (CNEA), with approximately 130,000 tonnes of ore processed at the Malargue plant. Historic head grades of 0.21% uranium, 2.0% copper, and 0.11% vanadium highlight the polymetallic nature of the district.¹

The project hosts uranium-vanadium-copper mineralization in a classic sandstone-hosted deposit setting and is a globally recognized model associated with substantial uranium endowment, alongside multiple additional exploration prospects across the claim package that have never been tested with modern methods.

POSITIONED AT THE CENTER OF U.S. CRITICAL METALS SUPPLY STRATEGY

Management believes the brownfield nature of the Huemul project and its overall advanced nature given the historical production at the mine fits well within the scope of potential U.S. funding options given the asset has historically been in production, and it is believed that production ceased in the mid-1970s due partially due to low uranium prices, rather than for geological or metallurgical reasons.² On February 4, 2026, U.S. Secretary of State Marco Rubio convened the first-ever U.S. Critical Minerals Ministerial in Washington, D.C. At that meeting, U.S. Deputy Secretary of State Christopher Landau and Argentine Foreign Minister Pablo Quirno signed the "Framework Instrument for Securing of Supply in the Mining and Processing of Critical Minerals"³. The agreement establishes a framework intended to facilitate cooperation and support for qualifying Argentine critical minerals projects, including the potential ability to apply for financing through institutions such as EXIM Bank and the U.S. International Development Finance Corporation (DFC), subject to applicable eligibility criteria, due diligence, and approval processes.⁴

Jaguar's Huemul Project hosts three priority metals within a single district (uranium, copper and vanadium) which the Company feels is precisely the type of project the framework was designed to advance with a clear path to modern exploration. The Company aims to submit an Environmental Baseline Study in the next month which would then lead to exploration activity beginning thereafter.

TWO-PHASE EXPLORATION PROGRAM

Jaguar has designed a multi-phase initial exploration program to systematically advance the Huemul Project, following completion of the baseline study submission.

Phase I — Data Verification & Geological Model:  Rigorous check sampling and systematic review of all historic trench data from previous operators; desktop geological model compilation to establish an accurate baseline for modern resource estimation.

Phase II — District-Scale Prospecting:  Surficial mapping and prospecting across the full claim package to confirm and delineate the extent of uranium-copper-vanadium mineralization, guided by Phase I results and the geological model.

MENDOZA GOVERNMENT PARTNERSHIP: A FORMAL OPERATING ADVANTAGE

On March 4, 2026, Jaguar announced that its wholly-owned subsidiary had entered into the Collaboration Agreement with the Ministry of Energy and Environment of the Province of Mendoza — the government body with direct regulatory authority over exploration and mining activity in the province where the Huemul Project is located.

The Collaboration Agreement establishes a formal framework for ongoing cooperation between the Ministry and the Company covering: technical and professional assistance in geological, environmental, legal, engineering, economic and financial studies; structured information exchange; training and professional development; and coordination of environmental, social and community practices associated with mining activity. The Collaboration Agreement has an initial one-year term, renewable by mutual consent.⁵

Feb 4, 2026	U.S.–Argentina Critical Minerals Framework Signed Secretary Rubio's Critical Minerals Ministerial, Washington D.C. Uranium, copper and vanadium named as priority supply chain targets. EXIM Bank and      DFC financing pathways opened for qualifying projects.
Mar 4, 2026	Mendoza Ministry Collaboration Agreement Signed Jaguar's wholly-owned subsidiary enters formal framework with the Ministry of Energy and Environment of the Province of Mendoza — covering geological, environmental, legal, and community cooperation across all Mendoza properties.
May 2026	Baseline Environmental Study Submission — UPCOMING Key regulatory milestone that is expected, subject to regulatory review and approval, to unlock near-term field activity, surface sampling, and drilling at the Huemul Project. Targeted for early May 2026.

_____________________________

1 These historical production figures represent historical operating information. They do not represent mineral resources or mineral reserves as defined under SEC Regulation S‑K Subpart 1300, have not been verified by a Qualified Person as defined under SEC rules, and should not be relied upon as indicative of current mineralization or future economic results.

2 There can be no assurance that any such funding or support will be available or obtained.

3 https://ar.usembassy.gov/u-s-and-argentina-launch-strategic-framework-to-strengthen-critical-minerals-supply-chains/

4 https://www.shale24.com/en/mining/argentina-and-us-sign-strategic-critical-minerals-agreement-n480#:~:text=The%20ministerial%20meeting%20brought%20together,Latin%20America%2C%20emphasizing%20sustainable%20production.

5 The Collaboration Agreement does not provide permits or authorizations for exploration or mining activities, which remain subject to applicable laws, regulations and regulatory approvals.

About Jaguar Uranium Corp. 

Jaguar Uranium Corp. is a South America-focused uranium exploration company advancing a portfolio of prospective brownfield projects across Colombia and Argentina. The Company's Berlin Project in Caldas Province, Colombia is a district-scale, sedimentary-hosted polymetallic system historically reported to host uranium alongside rare earth elements, vanadium, nickel, phosphate, molybdenum, rhenium and zinc. In Argentina, Jaguar is advancing the Laguna Salada Project in Chubut Province and the historic Huemul uranium mine in Mendoza Province. Anchored by a former producing mine, a historic uranium district and exploration projects supported by historical drilling, the Company is focused on advancing and expanding uranium opportunities across the region. Jaguar completed a $25 million initial public offering on NYSE American in February 2026 and is led by an experienced team with backgrounds in exploration, permitting, project development and mining finance in South America.

Forward-Looking Statements

This news release contains "forward-looking information" within the meaning of applicable securities laws (collectively, "forward-looking statements"). Forward-looking statements are based on current expectations and assumptions and are subject to known and unknown risks and uncertainties that could cause actual results to differ materially. Forward-looking statements are often identified by words such as "expects", "plans", "intends", "believes", "may", "could", "should" or similar expressions. Forward-looking statements in this news release include, without limitation, statements regarding: the scope, timing and results of the Company's planned exploration activities at the Huemul Project; the submission, review and acceptance of environmental baseline studies and the receipt of required regulatory approvals; the historical significance and exploration potential of the Huemul Project and surrounding district; the applicability and potential benefits of the U.S.–Argentina Framework Instrument for Securing Critical Minerals Supply; the Company's ability to pursue or obtain financing or other support from U.S. or other governmental or multilateral agencies; the anticipated phases and objectives of the Company's exploration programs; and the expected benefits of the collaboration agreement with the Ministry of Energy and Environment of the Province of Mendoza.

Forward-looking statements are based on assumptions including, but not limited to: the availability and quality of historical data; the outcome of environmental and regulatory review processes; the availability of qualified personnel, contractors and equipment; access to exploration sites; political, legal and regulatory conditions in Argentina and the United States; market conditions and commodity prices; and the availability of financing on acceptable terms.

Forward-looking statements involve risks and uncertainties, including, without limitation: delays or failures in obtaining required permits or approvals; the risk that exploration results may not confirm historical information or expectations regarding mineralization; uncertainties related to interpretation of geological data; operational and logistical challenges; changes in laws, regulations or government policies; social or community-related issues; currency fluctuations; and other risks described under "Risk Factors" in the Company's Registration Statement on Form S-1 (File No. 333-292006), as amended, and in subsequent filings with the U.S. Securities and Exchange Commission. The Company undertakes no obligation to update any forward-looking statements except as required by law.

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SOURCE Jaguar Uranium

FAQ

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

What did Jaguar Uranium (JAGU) announce about the Huemul Project on April 14, 2026?

Jaguar announced initiation of an initial exploration plan at the Huemul Project. According to the company, the 27,700-hectare project includes the historic Huemul mine and will follow a two-phase program after an environmental baseline study submission targeted for May 2026.

How large is the Huemul land package and what historic production does JAGU report?

The Huemul Project covers about 27,700 hectares with historic processing of 130,000 tonnes. According to the company, historic head grades reported were 0.21% uranium, 2.0% copper and 0.11% vanadium from Malargue-era operations.

What is the role of the U.S.–Argentina Critical Minerals Framework for JAGU and Huemul?

The framework may facilitate cooperation and funding opportunities for qualifying projects like Huemul. According to the company, February 4, 2026 agreement opened potential EXIM and DFC financing pathways, subject to eligibility and approvals.

What are the next regulatory and field milestones for JAGU at Huemul?

Jaguar plans to submit an Environmental Baseline Study targeted for May 2026 to enable fieldwork. According to the company, exploration activity will commence only after the study is accepted and applicable regulatory approvals are received.

What does Jaguar’s Collaboration Agreement with Mendoza mean for Huemul (JAGU)?

The agreement establishes formal cooperation with Mendoza’s Ministry of Energy and Environment. According to the company, it covers technical assistance, information exchange, training and coordination of environmental, social and community practices across Mendoza properties.