American Antimony Corp. Signs Metallurgical Testing Agreement with Silver Opportunity Partners LLC, a Subsidiary of Sunshine Silver Mining & Refining Company (SSMRC)

American Antimony Corp (OTCID:XTPT) signed a formal Metallurgical Testing Agreement with Silver Opportunity Partners LLC, a subsidiary of Sunshine Silver Mining & Refining Company, on December 8, 2025.

Rhea-AI Summary

American Antimony Corp (OTCID:XTPT) signed a formal Metallurgical Testing Agreement with Silver Opportunity Partners LLC, a subsidiary of Sunshine Silver Mining & Refining Company, on December 8, 2025. Under the MTA American Antimony will supply high-grade antimony ore from the Bernice Canyon, Nevada project for metallurgical testwork.

Tests will estimate recoveries, identify deleterious elements, assess reagent consumption and processing compatibility, and determine suitability for Sunshine Silver's flowsheet. Initial work uses third-party labs with possible expansion if results show compatibility.

Argus Dec 8 session

+32.53% close to close Open Argus

Details

News Market Reaction – XTPT

On Dec 8, the day this news came out, XTPT closed 32.53% above the previous close.

Data tracked by StockTitan Argus for the Dec 8 session.

Market Context

On Dec 8, the day this news came out, the stock closed 32.5% above the previous close. A strong posi...

Analysis

On Dec 8, the day this news came out, the stock closed 32.5% above the previous close. A strong positive reaction aligns with prior news where project de-risking and resource advances led to sizeable gains, including the 32.53% move on this testing agreement. Historical patterns show investors responded most to tangible steps toward processing and commercialization, while corporate or legal wins had weaker follow-through. If enthusiasm became stretched, lack of broad sector momentum and XTPT’s position still 57.66% below its 52-week high could have framed expectations for consolidation risk.

Historical Context

5 past events · Latest: Dec 08

5 events

1. Dec 08

   Testing agreement

   24h Move

   +32.5%

   Metallurgical Testing Agreement with Sunshine Silver subsidiary for Nevada ore.

2. Oct 15

   Resource expansion

   24h Move

   +12.9%

   Identified additional high-grade stockpiles expanding near-term ore inventory.

3. Oct 03

   Drill results

   24h Move

   +17.6%

   Reported world-class intercepts and expanded district-scale potential at project.

4. Sep 22

   Operational update

   24h Move

   -1.7%

   Advanced testing of high-grade material for potential initial commercial sales.

5. Sep 10

   Legal/share update

   24h Move

   -3.5%

   Court-driven cancellation of 15.24M shares reducing outstanding share count.

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

Key Terms

metallurgical testing agreement, scope of work, reagent consumption, flowsheet, +1 more

5 terms

metallurgical testing agreement technical

"they have entered into a formal Metallurgical Testing Agreement (MTA) to evaluate"

A metallurgical testing agreement is a contract in which one party hires a laboratory or specialist to test ore, metal samples or processing methods to determine metal content, recovery rates and suitable extraction techniques. Like sending a soil sample to a gardener to learn what will grow, the tests reveal how much value can realistically be recovered and what costs and equipment are needed. Investors use the results to assess a project’s economic potential, timeline and technical risk.

scope of work technical

"under the terms outlined in a Scope of Work, which governs the sampling,"

Scope of work is a clear description of the tasks, deliverables, timeline and responsibilities that a company or contractor has agreed to perform in a project or contract. It matters to investors because it reduces uncertainty about what will be delivered, how long it will take and how much it will cost — similar to a recipe that lists ingredients and steps so you can judge whether the final dish is realistic and on budget. A well‑defined scope of work helps assess execution risk, potential delays, and hidden costs that can affect a company’s financial outlook.

reagent consumption technical

"Assess reagent consumption and processing compatibility; andDetermine the overall"

Reagent consumption is the amount and rate at which chemical or biological materials are used during laboratory tests, manufacturing, or diagnostic processes. For investors, it matters because higher or unpredictable consumption increases operating costs, affects profit margins, and can create supply and scaling risks—similar to how a car’s fuel efficiency influences how much you spend to drive a certain distance.

flowsheet technical

"overall suitability of the material for integration into the existing Sunshine Silver flowsheet."

A flowsheet is a structured table that records a series of clinical or operational data points—such as vital signs, lab results, medication doses, procedures or milestone dates—so each patient or case can be tracked over time. For investors, a flowsheet turns detailed trial or operational activity into a clear timeline that highlights progress, gaps or problems, helping assess development speed, regulatory readiness and potential delays much like a trip log shows a journey’s pace and hiccups.

critical mineral regulatory

"Both companies note that antimony - a federally designated critical mineral-is vital"

A critical mineral is a naturally occurring element or metal that is essential for modern technologies—like batteries, electronics, clean energy systems and defense—and whose supply is vulnerable to disruption. Investors care because these minerals act like key building blocks: shortages, geopolitical controls, or production bottlenecks can sharply raise costs, stall product rollouts, change profit forecasts, and prompt government policy or subsidies that affect company valuations.

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AUSTIN, TX / ACCESS Newswire / December 8, 2025 / American Antimony Corporation (OTCID:XTPT), operating as Xtra Energy Corporation, a U.S.-based mineral development company focused on domestic antimony resources, and Silver Opportunity Partners LLC, a subsidiary of Sunshine Silver Mining & Refining Company (SSMRC), are pleased to announce they have entered into a formal Metallurgical Testing Agreement (MTA) to evaluate antimony-bearing material from American Antimony's American Antimony Project, located in Bernice Canyon, Nevada.

Through the agreement, American Antimony will supply test shipments of high-grade antimony ore for evaluation under the terms outlined in a Scope of Work, which governs the sampling, testing, and analysis procedures. Under the Scope of Work, Silver Opportunity Partners will conduct a series of metallurgical tests designed to:

• Estimate antimony recoveries;

• Identify potential penalty or deleterious elements;

• Assess reagent consumption and processing compatibility; and
  Determine the overall suitability of the material for integration into the existing Sunshine Silver flowsheet.

Initial testwork will be performed through third-party laboratories in coordination with Silver Opportunity Partners and SSMRC's technical team. If results indicate compatibility, the parties may elect to expand the testing program under mutually agreed terms to confirm full-scale processing suitability.

"This agreement represents another important step in developing a fully integrated, American-controlled supply chain for antimony," said Mac J. Shahsavar, P.Eng., CEO of American Antimony Corp. "We're proud to collaborate with a respected domestic partner like Sunshine Silver. This work will not only help validate the processing characteristics of our Nevada-sourced material but also advance the broader goal of establishing U.S. refining capability for this critical mineral."

Both companies note that antimony - a federally designated critical mineral-is vital for defense systems, semiconductors, energy storage, and flame-retardant materials. With global supply dominated by China and limited domestic production, developing secure U.S.-based sources and refining capacity remains a top priority for industry and national policy leaders.

About American Antimony Corporation

Operating as Xtra Energy Corp. (OTCID:XTPT) a U.S.-based mineral resource company focused on advancing critical mineral supply chain independence. The Company's primary asset focus is antimony, a federally designated critical mineral essential to defense, semiconductors, and energy storage applications. Xtra Energy is developing a portfolio of high-grade, U.S.-based projects with near-term production potential, aimed at delivering scalable domestic supply solutions in alignment with national security and industrial priorities.

Contact & Learn More:
Xtra Energy Corporation
Phone: 512-412-3636
Email: secretary@americanantimony.com
Website: www.americanantimony.com

Follow Us:
LinkedIn: American Antimony
X (Twitter): @AmericanSbCorp
Instagram: @xtraenergycorp
Facebook: Xtra Energy Corp

FORWARD-LOOKING STATEMENTS

This press release 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. These statements may relate to future events or the future financial performance of the Company and are subject to known and unknown risks, uncertainties, and other factors that may cause actual results, performance, or achievements to differ materially from those expressed or implied.

Readers are cautioned not to place undue reliance on these forward-looking statements, which reflect current expectations and assumptions only as of the date of this release. Such statements involve numerous risks and uncertainties, many of which are beyond the Company's control, including but not limited to the Company's ability to raise capital, successfully execute its business plan, and achieve projected results.

The Company undertakes no obligation to publicly update or revise any forward-looking statements to reflect future events, circumstances, or changes in expectations, except as required by law. For a detailed discussion of these risks and uncertainties, please refer to the Company's disclosures filed with the OTC Markets Group Inc., available at: https://www.otcmarkets.com/stock/XTPT/disclosure.

SOURCE: Xtra Energy Corp.

View the original press release on ACCESS Newswire

FAQ

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

What did American Antimony (XTPT) announce on December 8, 2025?

American Antimony announced a Metallurgical Testing Agreement with Silver Opportunity Partners to test high-grade antimony ore from Bernice Canyon, Nevada.

What testing will Silver Opportunity Partners perform on XTPT ore?

They will estimate antimony recoveries, identify penalty elements, assess reagent consumption and processing compatibility, and evaluate flowsheet suitability.

Where will the initial metallurgical testwork for XTPT material be conducted?

Initial testwork will be performed through third-party laboratories in coordination with Silver Opportunity Partners and Sunshine Silver technical staff.

Could the XTPT testing program expand beyond initial tests?

Yes; if results indicate compatibility with Sunshine Silver's flowsheet, the parties may mutually agree to expand the testing program.

What ore source will American Antimony send for testing under the MTA?

High-grade antimony ore from the American Antimony Project in Bernice Canyon, Nevada will be supplied for evaluation.

What strategic goal did American Antimony cite for the testing agreement?

The company said the work advances development of a U.S.-controlled antimony supply chain and supports domestic refining capability for the critical mineral.