Mr. Chad Peters reports

RIDGELINE MINERALS EXPANDS COPPER-GOLD PORPHYRY TARGETS WITH INFILL IP SURVEY AT THE BIG BLUE PROJECT, NEVADA

Ridgeline Minerals Corp. has released the results of its phase II, induced polarization (IP) geophysical survey at the Big Blue porphyry copper-(Cu)-gold (Au) project in Elko county, Nevada. The pole-dipole infill survey was collected in December, 2024, by Moombarriga Geoscience and consisted of an additional eight-line-kilometre (line km) survey across three high-priority IP lines in the Delker mine area to complement the original 28 line km survey collected in August, 2024.

See a summary of today's press release by Ridgeline chief executive officer Chad Peters on YouTube (link is available in the original version of this news release).

The phase II survey infilled lines between the Skarn Hill and Delker mines, which historically produced 94,434 pounds of copper at an average grade of 6.2 per cent between 1916 to 1917 from near-surface, high-grade, copper-bearing skarn. The mines overlie an approximately 2.0 km long by 1.0 km wide chargeability high, which is interpreted as the potential blind porphyry source to the high-grade Cu Skarn previously mined across the Delker trend. Merlin Geophysics oversaw data processing and subsequent interpretation of the raw IP data with highlights of the survey.

Michael Harp, Ridgeline's vice-president, exploration, commented: "The phase II infill results have expanded the kilometre-scale chargeability high underpinning the Delker Mine trend, which we interpret as the porphyry source to the high-grade copper skarn at surface. We also observe a continuous resistivity anomaly located directly adjacent to the inferred porphyry target that exhibits a strong vertical control and is interpreted as zones of upwelling fluids during porphyry emplacement. These fluids are an indicator of a strong hydrothermal system at depth and a likely contributor to the pervasive skarn alteration and copper mineralization that was historically mined across the Delker trend."

Michael Harp continues: "We are fully permitted and bonded for our maiden drill program, which is scheduled to begin in early March. The initial core holes will test for the continuation of high-grade copper skarn and porphyry dikes beneath the historical mine workings followed by a direct test of the chargeability high with the goal of identifying a porphyry copper-gold system at depth."

IP survey highlights

IP line 71500N to 72900N highlights a kilometre-scale chargeability and coincident resistivity anomaly located directly down dip of the Skarn Hill and Delker mines:

• Chargeability: The chargeability high measures roughly two km long by one km wide and is interpreted as the potential porphyry source to Cu-Au mineralization along the greater Delker mine trend:
  • Chargeability values in the core of the anomaly consistently average 20 to 25 millivolts per volt (mV/V), which is consistent with chargeability values observed in the productive horizons of many known porphyry systems.
• Resistivity: The highest priority resistivity anomaly is a subvertical feature that extends across the entire Delker trend and averages between 150 to 350 ohm.m (highs of up to 500 ohm.m):
  • This anomaly exhibits a bias to the western margin of the dike swarm, which is interpreted as emanating from the Delker porphyry/chargeability anomaly at depth.
• Resistivity values between 100 to 500 ohm.m is considered relatively low compared with the background values of unaltered host rocks at Big Blue, suggesting the presence of a significant alteration cell beneath the Delker trend:
  • Decreased resistivity may be explained by pervasive alteration and subsequent sulfide deposition within both carbonate and QFP dike host rocks during porphyry emplacement.

Maiden drill program

Drill planning for an initial 2,000-metre core program is in progress with an anticipated start date of March 3, 2025. The company intends to drill test two primary targets in the maiden drill program including:

1. Drill down dip of outcropping high-grade copper-bearing skarn mineralization in the Delker mine area to transect the QFP dike swarm (genetic link to deeper porphyry source) and coincident resistivity anomaly.
2. Drill the core of the Delker chargeability anomaly to test for the blind porphyry Cu-Au source to the QFP dikes and high-grade skarn observed at surface.

QA/QC (quality assurance/quality control) procedures

Samples are submitted to American Assay Laboratories (AAL) of Sparks, Nev., which is a certified and accredited laboratory, independent of the company. Independent check samples are shipped to Paragon Geochemical Labs (PAL) of Sparks, Nev. Samples are prepared using industry-standard prep methods and analysed using FA-PB30-ICP (Au; 30 g fire assay) and ICP-5AM48 (48-element ssuite; 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.

Technical information contained in this news release has been reviewed and approved by Michael T. Harp, CPG, the company's vice-president, exploration, who is Ridgeline's qualified person under National Instrument 43-101 and responsible for technical matters of this release.

Big Blue project

Big Blue is located in Elko county, Nevada, approximately 75 kilometres (km) southeast of the city of Elko, Nev. The project includes the past-producing Delker mine, which historically produced 94,434 pounds of copper at an average grade of 6.2 per cent between 1916 to 1917 from structurally controlled skarn deposits outcropping between the Delker and Skarn Hill mines. The property shares its southern boundary with Reyna Silver's Medicine Springs Ag-Pb-Zn (silver-lead-zinc) carbonate replacement (CRD) project and had seen limited modern exploration in over a century until Ridgeline staked the property in 2023. The primary target at Big Blue is porphyry-skarn Cu-Au (copper-gold) plus or minus Ag-Mo (silver-molybdenum) mineralization, with potential to discover polymetallic, carbonate replacement deposit (CRD) style mineralization as the system zones outward over six plus kilometres of untested strike toward the Medicine Springs project. This target model is analogous to the Butte Valley porphyry Cu-Au system, which is inferred to be the source of CRD mineralization at the company's nearby Selena project. Big Blue is 100 per cent owned by the company and is comprised of a total of 50 square kilometres of highly prospective exploration ground that will benefit from Ridgeline's systematic approach to discovery.

About Ridgeline Minerals Corp.

Ridgeline Minerals is a discovery focused precious and base metal explorer with a proven management team and a 200-square-kilometre 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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