Mr. Chad Peters reports

RIDGELINE MINERALS REPORTS 38.3 - 58.0 MILLION TONNE SILVER-GOLD EXPLORATION TARGET AT THE CHINCHilla oxidE DEPOSIT, SELENA PROJECT

Ridgeline Minerals Corp. has defined a mineral exploration target outlining the silver-gold-lead-zinc exploration potential at the company's outcropping Chinchilla oxide Ag-Au-Pb-Zn (silver-gold-lead-zinc) deposit at the Selena project, Nevada. The company has completed preliminary 3-D modelling at the Chinchilla oxide deposit that supports an exploration target of 38.3 million to 58.0 million tonnes (MT) of mineralized material grading between 39.8 to 52.0 grams per tonne (g/t) Ag, 0.12 to 0.15 g/t Au, 0.42 per cent to 0.55 per cent Pb and 0.40 per cent to 0.51 per cent Zn. The quantity and grade of the exploration target are conceptual in nature and there has not been sufficient exploration to define a mineral resource. It is uncertain whether further exploration will result in the exploration target being delineated as a mineral resource.

Chad Peters, Ridgeline's president, chief executive officer and director, commented: "The Chinchilla oxide deposit was Ridgeline's original outcropping Ag-Au oxide discovery made by the team in 2020 and we always knew it had the potential to become a deposit of significant scale. Announcing a mineral exploration target helps to further highlight this exciting opportunity and better frame the upside potential across multiple mineralized zones at the Selena project. Chinchilla oxide remains open along strike and down dip toward our recent Chinchilla sulphide discovery with potential to expand the exploration target and upgrade to a maiden mineral resource estimate with additional drilling."

Mr. Peters continues: "The Selena project exhibits over four kilometres of proven mineralized strike between the outcropping Chinchilla oxide zone and our recent high-grade CRD discovery at Chinchilla sulphide, which was made in collaboration with our partners at South32. Our strategy in 2026 will be to continue drill testing the Chinchilla sulphide discovery to better understand the potential scale and grade of the sulphide system, which will help our teams better understand the combined resource potential of the greater mineralized system at Selena as we continue to grow this very exciting polymetallic deposit."

Chinchilla oxide mineral exploration target

The company believes the Chinchilla oxide zone has the potential to host: 38.3 to 58.0 MT of mineralized material ranging from 39.8 to 52.0 g/t Ag and 0.12 to 0.15 g/t Au:

• Pb-Zn grades range between 0.42 per cent to 0.55 per cent Pb and 0.40 per cent to 0.51 per cent Zn.

The Chinchilla oxide zone remains open for expansion along strike and down-dip with additional infill drilling required to complete a National Instrument 43-101-compliant maiden resource estimate:

Chinchilla oxide highlight drill intercepts:

• SE22-045: 32.5 metres grading 153.42 g/t Ag, 0.09 g/t Au and 4.1 per cent Pb-Zn:
  • Including 6.1 m grading 480.52 g/t Ag, 0.1 g/t Au and 18.4 per cent Pb-Zn:
    • Including 0.7 m grading 1,347.73 g/t Ag, 0.11 g/t Au and 40.9 per cent Pb-Zn.
• SE23-047: 60.7 m grading 69.8 g/t Ag, 0.4 g/t Au and 1.8 per cent Pb-Zn:
  • Including 7.7 m grading 146.5 g/t Ag, 0.9 g/t Au and 1.7 per cent Pb-Zn.
• SE21-025: 44.2 m grading 123.2 g/t Ag, 0.1 g/t Au and 2.1 per cent Pb-Zn:
  • Including 7.6 m grading 237.8 g/t Ag, 0.2 g/t Au and 3.8 per cent Pb-Zn.

Mineral exploration target database

• The exploration target assay database comprises:
  • 33 reverse circulation (RC) and core drill holes totalling 8,250.3 m and 5,650 assay samples;
  • Five surface trenches totalling 180.4 m and 122 assay samples.
• Select bottle roll metallurgical testing on Chinchilla oxide RC composites in 2021 averaged 31.5 per cent to 50.0 per cent Ag and 76.7 per cent to 83.3 per cent Au cyanide solubility suggesting the deposit may be amenable to heap leach processing methods:
  • The company's metallurgical consultant has indicated that additional metallurgical testing on drill core samples (versus original RC samples) is required and may materially improve bottle roll cyanide solubility results for silver.
  • Core drilling at Selena (2023 to 2025) has confirmed that RC drilling methods were washing out the Ag-rich clays in the oxide zone, diluting grades and effectively reducing overall cyanide solubility.
  • Neither Pb nor Zn were analyzed during the 2021 bottle roll program with additional testing required to define potential cyanide solubility ranges of either metal.
• The metallurgical recoveries at Chinchilla oxide do not apply to the potential metallurgical recoveries at the Chinchilla sulphide discovery, which is sulphide mineralization that would require a different milling process.

The Chinchilla oxide exploration target has been prepared under National Instrument 43-101 guidelines for mineral exploration target reporting and utilized a third party qualified person (QP) for all grade shell models and interpolations. Grade interpolations utilized a low-grade cut-off of 15.0 g/t Ag with three-metre composites and a radial basis function (RBF) numeric model. The quantity and grade of the exploration target are conceptual in nature and there has not been sufficient exploration to define a mineral resource. It is uncertain whether further exploration will result in the exploration target being delineated as a mineral resource. The exploration target model has not been evaluated for reasonable prospects of potential economic extraction.

The project is currently operated by Ridgeline under phase 1 of an earn-in agreement with a wholly owned subsidiary of South32 Ltd., where South32 may earn up to an 80-per-cent interest in the project by satisfying all commitments under the earn-in agreement (see Aug. 22, 2024, news release).

QA/QC (quality assurance/quality control) procedures

HQ and NQ core samples are split in one-half with samples submitted to American Assay Laboratories (AAL) of Sparks, Nev., which is a certified and accredited laboratory, independent of the company. Independent check samples are sent to Paragon Geochemical Labs (PAL) of Sparks, Nev. Samples are prepared using industry-standard prep methods and analyzed using FA-PB30-ICP (Au; 30 g fire assay) and ICP-5AM48 (48-element suite; 0.5 g five-acid digestion/ICP-MS) methods. AAL also undertakes its own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration. Ridgeline's QA/QC program includes regular insertion of CRM standards, duplicates and blanks into the sample stream with a stringent review of all results completed by the company's qualified person, Michael T. Harp, vice-president, exploration.

The technical information contained in this news release has been prepared under the supervision of, and approved by Michael T. Harp, CPG, the company's vice-president, exploration. Mr. Harp is a qualified person as defined under National Instrument 43-101 -- Standards of Disclosure for Mineral Projects.

Selena project

Selena is located in White Pine county, Nevada, approximately 64 kilometres (km) north of the town of Ely, Nev. The project is currently being operated by Ridgeline under phase 1 of an earn-in agreement South32 and shares a property boundary with the Butte Valley project, a $33-million earn-in agreement between Freeport-McMoRan and the underlying owner, Falcon Butte Minerals. The project comprises 39 square kilometres of highly prospective exploration ground including Ridgeline's shallow-oxide Ag-Au plus or minus Pb-Zn Chinchilla oxide and deeper Chinchilla sulphide discoveries. Subsequent drilling has continued to highlight the potential for high-grade CRD type mineralization (Ag-Zn-Pb-Au plus or minus Cu-Sb-W (copper-antimony-tungsten)) between Chinchilla oxide and Freeport-McMoRan's Butte Valley Cu-Au-Ag-Zn porphyry located directly west of the property. For additional information regarding the South32 earn-in agreement terms view the Aug. 22, 2024, news release.

About Ridgeline Minerals Corp.

Ridgeline Minerals is a discovery-focused precious and base metal explorer with a proven management team and a 200 square km exploration portfolio across seven projects in Nevada, United States. The company is a hybrid explorer with a mix of 100-per-cent-owned exploration assets (Big Blue, Atlas, Bell Creek and Coyote) as well as two earn-in exploration agreements with Nevada Gold Mines at its Swift and Black Ridge projects, and a third earn-in with South32 at its Selena project.

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