Vancouver, British Columbia, November 5, 2025 TheNewswire – Prismo Metals Inc. (the “Company”) (CSE: PRIZ,OTC:PMOMF) (OTCQB: PMOMF) is pleased to announce that Walnut Mines LLC, the owner of the Hot Breccia claims for which the Company has a 75% option, has agreed to extend certain dates to complete cash payments and exploration expenditures.
Alain Lambert, CEO OF FRISO said: “” Prismo remains firmly committed to advancing the Hot Breccia Project, located in the heart of Arizona ‘ s historic copper belt. We appreciate Walnut Mines LLC’s cooperation in extending certain milestone commitments, which provides the company with additional flexibility as it evaluates a range of strategic alternatives. Each of these paths is designed to position Prismo to begin drilling in what we consider one of the most attractive copper exploration opportunities in Arizona and the broader United States. ”
Dr. Linus Keating, manager of Walnut Mines LLC, enthusiastically commented, “Walnut and Prismo remain committed to moving Hot Breccia forward toward drill discovery. To achieve that goal, we must continue to work together and support each other. This expansion will provide the necessary time and better focus resources to succeed at Hot Breccia.”
More specifically, the extensions are as follows: (i) extension of the milestone date to complete the $1,750,000 exploration expenditure from January 31, 2026 to January 31, 2027; and (ii) extend the milestone date to complete exploration expenditures of $2,000,000 from January 31, 2027 to January 31, 2028 and (iii) extend the milestone date to complete the final cash payment of $275,000 to Walnut Mines LLC from January 31, 2026 to July 31, 2026.
Prism ‘ The company’s Hot Breccia project is located in the heart of the Arizona Copper Belt, home to several globally important porphyry copper deposits. Examples of these significant deposits include Freeport McMoRan’s Miami-Inspiration mine complex, BHP’s San Manuel mine, Rio Tinto, BHP’s Resolution deposit, and others (see Figure 1).
Figure 1. Location of the Hot Breccia project in Arizona’s copper belt.
Historical drilling conducted in mid to late 1970s ‘ s by a subsidiary of Rio Tinto intersected high-grade copper mineralization at depths ranging from 640 to 830 meters below the surface. Several holes targeted an area of coincident magnetic high, thought to be caused by magnetite churning cut into the boreholes and occurring in xenoliths in cross-cutting dikes exposed at the surface. Prismo believes these intercepts may represent the periphery of the upper portion of a large mineralized system.
Support for the business ‘ The project’s mineralization model comes from several sources, including the results of historical drilling, geophysical surveys, the distribution of dikes containing Cu-bearing skarn xenoliths, the 2023 ZTEM survey and the results of an AI survey. The anomalous target area identified in Prismo ‘ The modeling of the model measures 1,100 meters by 1,150 meters.
Dr. Craig Gibson, Chief Exploration Officer of Prismo stated: ” The copper exploration target at Hot Breccia has geophysical, geochemical and geological features typical of many porphyry copper deposits. The project area has a regional location similar to the BHP-Rio Tinto copper deposit, 40 kilometers northwest of Hot Breccia, and is considered one of the largest copper discoveries in the history of North American mining. ” He added: ” The drilling program is intended to drill through the entire future Paleozoic carbonate stratigraphy in the postulated porphyry body/breccia zone. The exploration team will take advantage of the geological information provided by each hole as it drills to refine the targeting of subsequent holes. ”
Historic drill holes intersect high-grade skarn mineralization, including 23 meters at 0.54% Cu at 640 meters depth (hole OC-1), 18 m at 1.4% Cu and 4.65% Zn at 830 meters depth (hole OCC-7), and 7.6 meters at 1.73% Cu and 0.11% Zn at 703 meters and 4.6 meters with 1.4% Cu and 0.88% Zn at 716 meters (OCC-8). Mineralization occurs in an altered zone several hundred meters thick, hosted by favorable Paleozoic carbonate rocks that underlie a series of Cretaceous andesitic volcanic rocks. These carbonates are the same rocks that host the high-grade copper mineralization in Freeport ‘ It’s near the Christmas mine. The historic drilling intersected a blind mineralized intrusion associated with the skarn mineralization, creating an immediate drill target that is believed to be the source of the mineralization at Hot Breccia (Figure 2). Several magnetic peaks in the region surrounding the proposed intrusion may also indicate subsurface skarn mineralization and provide additional exploration targets.
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Figure 2. Schematic cross section at Hot Breccia with updated interpretation after Barrett (1974).
Notes:
(1) Barrett, Larry Frank (1972): Igneous intrusions and associated mineralization in the Saddle Mountain Mining District Pinal County, Arizona. Unpublished master’s thesis, University of Utah.
(2) Barrett, Larry Frank (1974): Diamond drill hole OC-1, O’Carroll Canyon, Pinal County, Arizona, unpublished internal report, Bear Creek Mining.
Over hot Breccia
The Hot Breccia property consists of 1,420 acres in 227 contiguous mining claims located in the world-class Arizona Copper Belt between several well-known world-class copper mines including Morenci, Ray and Resolution (Figure 1). Hot Breccia exhibits many features consistent with these adjacent systems, most prominently a swarm of porphyry dykes and a series of breccia pipes containing numerous fragments of well copper mineralized rock intermingled with fragments of volcanic and sedimentary material derived from considerable depth. Prismo conducted a ZTEM survey last year, which identified a very large conductive anomaly directly beneath the breccia outcrops.
Sampling at the project has shown the presence of copper mineralization associated with dacite dikes that transported fragments of highly mineralized carbonate rocks to the surface from depths are believed to be 400-1,000 meters. Drilling deep holes is necessary to tap the source of these mineralized fragments at the surface.
Test results from historic drill holes have not been verified because the core has been destroyed, but information has been gathered from memos, photographs, and drill logs that contain some, but not all, of the test results and descriptions. Technical information from adjacent or nearby properties does not mean or imply that Prismo will achieve similar results to its own properties.
Previous drilling and geophysics data are historical in nature and have not been verified, do not meet NI 43-101 standards and should not be relied upon; The company uses the information solely as a guide in planning explorations.
Qualified person
Dr. Craig Gibson, PhD., CPG., a Qualified Person as defined by NI-43-01 regulations and Chief Exploration Officer and Director of the Company, has reviewed and approved the technical disclosures contained in this press release.
About Prismo Metals Inc.
Prismo (CSE: PRIZ,OTC:PMOMF) is a mining exploration company focused on advancing its Hot Breccia copper project in Arizona and its Palos Verdes silver project in Mexico.
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Prism Metals Inc.
1100 – 1111 Melville St., Vancouver, British Columbia V6E 3V6
Contact:
Alain Lambert, Managing Director alain.lambert@prismometals.com
Gordon Aldcorn, Chairman gordon.aldcorn@prismometals.com
Cautionary Note Regarding Forward-Looking Information
This press release contains certain statements and information that may constitute forward-looking information within the meaning of applicable Canadian securities laws. Forward-looking statements relate to future events or future performance and reflect the expectations or beliefs of the Company’s management regarding future events. Generally, forward-looking statements and information can be identified by the use of forward-looking terminology, such as: ” is planning ” or ” anticipates ” or variations of such words and phrases or statements that cause certain actions, events or results ” be able to”, ” could “, ” should “, ” would ” or ” prevent ” . This information and these statements, referred to herein as “forward ‐ forward-looking statements”, are not historical facts, are made as of the date of this press release and include, without limitation, statements regarding discussions of future plans, estimates and forecasts and statements regarding management’s expectations and intentions regarding, among other things: the timing, costs and results of drilling in Hot Breccia.
This one forward ‐ forward-looking statements involve numerous risks and uncertainties, and actual results may differ materially from those suggested in forward-looking statements. These risks and uncertainties include, among others: delays in obtaining or failure to obtain appropriate financing to finance the Hot Breccia exploration program.
In making the forward-looking statements in this press release, the Company has applied various material assumptions, including, but not limited to: the ability to raise capital to finance the Hot Breccia drilling campaign and the timing of such drilling campaign.
Although the Company’s management has attempted to identify important factors that could cause actual results to differ materially from those contained in any 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. Readers are cautioned that reliance on such information may not be appropriate for other purposes. The Company undertakes no obligation to update any forward-looking statements, forward-looking information or financial prospects incorporated herein by reference, except in accordance with applicable securities laws. We are looking for a safe haven.
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