Altamira Gold Announces Filing of NI 43-101 Technical Report for Maria Bonita Porphyry Gold Project, Cajueiro District, Brazil

Rhea-AI Summary

Altamira Gold Corp. (EQTRF) has filed a National Instrument 43-101 technical report for its Maria Bonita porphyry gold deposit within the Cajueiro Project in Brazil. The report, which details the maiden resource estimate originally announced on May 5, 2025, confirms the initial findings with no material differences from the previous announcement. The technical report was supervised by Qualified Person Volodymyr Myadzel, PhD, MAIG, a consultant to the company. The report is now available on SEDAR+ and the company's website for public access.

Vancouver, British Columbia--(Newsfile Corp. - June 19, 2025) - Altamira Gold Corp. (TSXV: ALTA) (FSE: T6UP) (OTC Pink: EQTRF), ("Altamira" or the "Company") is pleased to announce that it has filed a National Instrument 43-101 technical report (the "Report") on the maiden resource estimate for the Maria Bonita porphyry gold deposit within the Cajueiro Project. The report can be found under the Company's profile on SEDAR+ at www.sedarplus.ca and on the Company's website. The maiden resource was originally published in a press release on May 5, 2025, which is also available for review on SEDAR+ and on the Company's website. There are no material differences between the resource announced in the news release and the resource in the report.

Qualified Person

Volodymyr Myadzel, PhD, MAIG, a consultant to the Company as well as a Qualified Person as defined by National Instrument 43-101, supervised the preparation of the technical information in the report.

About Altamira Gold Corp.

The Company is focused on the exploration and development of gold and copper projects within western central Brazil, strategically advancing five projects spanning over 100,000 hectares within the prolific Juruena Gold Belt—an area that has historically yielded over 6 million ounces of placer gold*. Leading the portfolio is the Cajueiro project, a highly prospective asset with an NI 43-101** compliant resource estimate within the Central Area of 185,000 ounces of gold in the Indicated category (5.66Mt @ 1.02 g/t) and an additional 515,000 ounces in the Inferred category (12.66Mt @ 1.26 g/t) and also some 7 kilometers to the west, within the Maria Bonita area, an NI 43-101 compliant resource estimate of 357,800 ounces of gold in the Indicated category (24.19 Mt @ 0.46g/t gold) and an additional 362,400 ounces gold in the Inferred category (25.64 Mt @ 0.44g/t gold).

Ongoing exploration and fieldwork at Cajueiro indicate the presence of multiple porphyry gold systems, reinforcing its potential for district-scale development. These hard-rock gold sources align with historical alluvial gold production, highlighting the region's exceptional gold endowment and scalability. With a rich geological setting and a track record of significant discoveries, the Company is well-positioned to unlock further value across its expansive land package.

* Juliani, C. et al; Gold in Paleoproterozoic (2.1 to 1.77 Ga) Continental Magmatic Arcs at the Tapajós and Juruena Mineral Provinces (Amazonian Craton,Brazil): A New Frontier for the Exploration of Epithermal-Porphyry and Related Deposits. Minerals 2021, 11, 714.
**NI 43-101 Technical Report, Cajueiro Project, Mineral Resource Estimate: Global Resource Engineering, Denver Colorado USA, 10^th October 2019; Authors K. Gunesch, PE; H. Samari, QP-MMSA; T. Harvey, QP-MMSA

On Behalf of the Board of Directors,

ALTAMIRA GOLD CORP.

"Michael Bennett"

Michael Bennett
President & CEO

Tel: 604.676.5661
info@altamiragold.com 
www.altamiragold.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.

The securities described herein have not been registered under the U.S. Securities Act or any state securities laws, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements under the U.S. Securities Act and any applicable state securities laws.

Forward-looking Statements

Certain information contained herein constitutes "forward-looking information" under Canadian securities legislation. Forward-looking information includes, but is not limited to, statements with respect to the extension of the Warrants. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "will", "intends" or variations of such words and phrases or statements that certain actions, events or results "will" occur. Forward-looking statements are based on the opinions and estimates of management as of the date such statements are made and they are subject to known and unknown risks, uncertainties and other factors that may cause the actual results to be materially different from those expressed or implied by such forward-looking statements or forward-looking information, including the receipt of all necessary regulatory approvals. Although management of the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements or forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements and forward-looking information. The Company will not update any forward-looking statements or forward-looking information that is incorporated by reference herein, except as required by applicable securities laws.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/256139

FAQ

What is the significance of Altamira Gold's NI 43-101 technical report for the Maria Bonita project?

The NI 43-101 technical report confirms the maiden resource estimate for Altamira's Maria Bonita porphyry gold deposit in Brazil's Cajueiro Project, providing official documentation of the project's resources as initially announced on May 5, 2025.

Where can investors find Altamira Gold's (EQTRF) technical report for Maria Bonita?

The technical report is available on SEDAR+ (www.sedarplus.ca) and on Altamira Gold's company website.

Who supervised the technical report for Altamira Gold's Maria Bonita project?

The technical report was supervised by Volodymyr Myadzel, PhD, MAIG, a consultant to the company who serves as a Qualified Person as defined by National Instrument 43-101.

Are there any differences between Altamira Gold's May 5 announcement and the filed technical report?

No, there are no material differences between the resource estimate announced in the May 5, 2025 news release and the resource detailed in the technical report.