Ridgeline Minerals Acquires Extensive Historical Database for the Big Blue Project, Nevada

Vancouver, Canada, August 24, 2023 – Ridgeline Minerals Corp. (“Ridgeline” or the “Company”) (TSX-V: RDG | OTCQB: RDGMF | FRA: 0GC0) is pleased to announce it has acquired, at no cost to the Company, an extensive historical exploration database for the Big Blue project (“Big Blue” or “Project”)) from an undisclosed third-party. Big Blue is a porphyry-CRD, copper (“Cu”) – gold (“Au”) – silver (“Ag”) – lead (“Pb”) – zinc (“Zn”) exploration prospect in Elko County, Nevada, which includes the past producing high-grade copper Delker Mine (See February 9, 2023 press release HERE). The newly acquired data is a modern geologic database consisting of detailed mapping, surface geochemistry, drill data and multiple generations of surface and airborne geophysics. The data has been thoroughly validated and incorporated into the Big Blue geologic model and is expected to save significant time and exploration capital to advance the Project to a maiden drill program in 2024.  A detailed summary of the historical database is highlighted below.

Mike Harp, Ridgeline’s Vice President, Exploration commented, “The acquisition of this historical dataset is a major step forward for the geologic model at Big Blue and significantly accelerates the exploration process for our team. The geophysical surveys in particular highlight multiple potential targets, including porphyry targets and a well-defined, northeast trending structural corridor that extends between the historical Delker copper-gold Mine and Reyna Silver’s Medicine Springs CRD project located on our southwestern boundary. This untested structural trend represents a highly prospective, six-kilometer-long target area that is bracketed on both ends by historical copper and base metal mines. The database also suggests that the limited historical drilling that was conducted on the project did not drill deep enough to adequately test geophysical anomalies located directly beneath multi-percent copper mineralization that was historically mined from the Delker Mine and Skarn Hill adit. Our team plans on integrating and reinterpreting the raw data sets to continue building out the geologic mode with the goal of initiating a maiden drill campaign in 2024.”

Historical Data Summary:

Geophysics

• Two generations of magnetic surveys including a regional airborne survey and high-resolution ground magnetics with a 3D inversion focused on the Delker Mine area (Figure 1 & Figure 2)
• Ground gravity survey with supporting 3D inversion (Figure 1)
• Two induced polarization (“IP”) lines focused on the Delker Mine and Skarn Hill adits
  Significance – Airborne magnetics and IP lines highlight potential for porphyry source at depth while ground magnetics and gravity surveys highlight key structural trends

 Surface Geochemistry

• Individual rock chip samples returned up to 5.5% Cu (Figure 2)
  • A total of 61 historical rock chips have been added to the Ridgeline database ranging from below assay detection limits to 5.5% Cu (avg.0.42% Cu)
• 251 soil samples were collected on a 100x100m grid within outcrop and shallow alluvium in the Delker Mine area
  Significance – Rock chips confirm roughly 1.5 km long trend of high-grade Cu-skarn mineralization on-trend of the Delker Mine and Skarn Hill adit.  

 Drilling

• Six historical drillholes completed by Newmont and Exxon Minerals were drilled on the project for a total of 1,177 meters with the deepest hole reaching a maximum depth of 1,177.3 meters (Figure 1)
  Significance – Limited drilling on the property did not drill deep enough to test targets within prospective limestone host horizons

 Mapping

• Multiple generations of detailed geologic mapping between 1989 and 1992
  Significance – mapping highlights copper bearing felsic dikes that crosscut older Jurassic age porphyries in the Delker Mine area

 Geochronology

• Regional age-dating program highlights up to six generations of Jurassic age porphyry intrusions with multiple copper-bearing felsic dikes that crosscut the Jurassic intrusions
  Significance – Jurassic age porphyries are the same age range as Nevada’s Yerington copper district with mapped and crosscutting copper bearing dikes in the Delker Mine area suggesting the potential for a Cretaceous age porphyry system (ie: Robinson copper district)

Big Blue Project

Big Blue is located in Elko County, Nevada, approximately seventy-five kilometers (“km”) southeast of the city of Elko, NV. The Project includes the past producing Delker Mine, which produced a reported 94,434 pounds of copper at an average grade of 6.2% Cu between 1916-1917 ¹ and shares its southern boundary with Reyna Silver’s Medicine Springs Ag-Pb-Zn Carbonate Replacement (“CRD”) project. Mineralization occurs as high-grade skarn located proximal to northeast trending felsic dikes that are interpreted as bleeding off a potential porphyry source located on or near the Big Blue property, which has never been drill-tested. The primary target at Big Blue is porphyry-skarn Cu ± Au-Ag mineralization, which may be the source of distal CRD mineralization at Medicine Springs – analogous to the Butte Valley porphyry Cu-Au system inferred to be a source of CRD mineralization at the Company’s nearby Selena project. A large portion of the Project is covered by shallow, post-mineral gravels covering a roughly five (5) km target area resulting in limited surface expression of the porphyry system. The 100% owned Project is comprised of a total of 29 square kilometers of highly prospective exploration ground that has seen limited exploration since the early 1900’s and will benefit from the Ridgeline’s systematic approach to discovery (view Ridgeline’s Corporate Deck HERE).