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Glenstar Minerals Inc. (CSE: GSTR,OTC:GSTRF) (OTCQB: GSTRF) (FSE: VO20) ("Glenstar" or the "Company") announces that it will be conducting a Terēan survey at its geologically complex Green Monster Project in Clark County, Nevada, in order to gain a more detailed understanding of the intricate and complicated geological structures present on the property.
The Survey will begin on Monday, June 29, 2026 and will consist of four (4) shear-wave velocity structure cross sections collected along 2,400 ft long arrays. This survey is designed to image cover thickness, depth to bedrock, key structural and lithologic features (faults and voids), and will extend from the surface to a 600 ft cross section depth. The final interpretation will be tied to the currently available subsurface data and analysed for inclusion in the final report.
This type of survey is very cost effective and highly successful in mapping faults and structural controls on mineralization, defining depth to competent rock, quantifying overburden, imaging paleochannels & alteration zones, and identifying weathered and fractured zones that could indicate the presence of large faults and their orientation.
Glenstar Geologist Bob Marvin noted that, "The results of the Phase 2 drill program provided us with some solid data regarding mineralization. However, the results also showed that there is a definite complexity to the geologic structure, or structures, underlying the project. The Terēan survey should provide more advanced, detailed information that will help determine what the next phase of drilling and exploration should look like going forward."
Numerous polymetallic zones were encountered during the Phase 2 program, which consisted of six (6) holes drilled to depths from 500 feet to 585 feet encompassing ~3,320 feet of total drilling across three (3) drill pads. These holes contained highly fractured rock with abundant clay alteration and brightly coloured orange and red oxide minerals and decalcification. Assay results confirmed that the area of interest is significantly mineralized and geologically complex; however, at this early stage of exploration the grades reported are less than expected while at the same time raising a number of interesting questions. As a result of this geological complexity, further geophysical work is required to address the data that is inconclusive and provide a clearer understanding of the type of structure and system contained within the property.
Project Background & Recent Exploration Work
The Green Monster Property is comprised of 35 federal lode claims covering ~700 acres located in Clark County, Nevada, on the west trending spur of the Spring Mountains and is approximately 40 miles southwest of Las Vegas. Until the recent drill programs conducted in May of 2025 and February of 2026, no drilling was ever conducted on the property. The Company's previous identification of robust nickel-copper with anomalous cobalt from sampling work done in 2022 indicated that several targets were ideal for shallow RC drilling (see news releases dated May 28, 2025, and July 16, 2025).
Glenstar acquired the Green Monster Property and conducted initial groundwork in 2022 that included reconnaissance geologic mapping, surface rock sampling, soil sampling, and a drone magnetic survey. Channel sampling across the exposed back of a raise off the main shaft returned 1.18 meters of 3.77% Cu (Copper), 3.06% Ni (Nickel), 0.21% Co (Cobalt) and 6.83% Zn (Zinc). These values are well in excess of select dump samples from historical underground workings and represent in-place, vein style mineralization. Sampling of oxide and sulfide bearing boulders directly downhill of the patented workings has confirmed the presence of very high zinc (>10%) and silver (>200ppm), as well as copper, uranium, and lead. (Sampling results provided above were previously published in the Green Monster Project NI 43-101 Technical Report dated June 20, 2023, Section 7.5).
About Glenstar Minerals Inc.
Glenstar is a mineral exploration company with a focus on polymetallic minerals. These elements are classified as critical minerals and are essential in the manufacturing of sophisticated electronics and other vital energy technologies. The Company's mission is to leverage its knowledge and connections to explore, acquire, and develop critical mineral and energy metal properties throughout the world.
Glenstar's shares trade on the Canadian Securities Exchange (CSE) under the symbol "GSTR", on the Frankfurt Stock Exchange under the symbol "VO20", and on the Over-the-Counter market (OTCQB) in the United States under the symbol "GSTRF".
Robert Marvin, P.Geo (ONT) is the qualified person as defined by National Instrument 43-101 and is the independent consulting geologist for Glenstar Minerals Inc., who has examined the Green Monster and Wildhorse properties on the ground numerous times since 2022 and 2024 respectively. All fieldwork relating to geologic observations and sampling as reported herein, has been directly overseen by Mr. Marvin who supervised the preparation of, and has reviewed and approved, the technical information in this release.
ON BEHALF OF THE BOARD
"David Ryan"
President & CEO
Further information regarding the Company can be found on SEDAR+ at www.sedarplus.ca, by visiting the Company's website at www.glenstar.ca or by contacting the Company directly at 604-449-2810.
Neither Canadian Securities Exchange nor its Regulation Services Provider (as that term is defined in policies of the Canadian Securities Exchange) accepts responsibility for the adequacy or accuracy of this release.
Cautionary Statement Regarding Forward-Looking Information Certain information contained in this news release constitutes "forward-looking information" or "forward-looking statements" (collectively, "forward- looking information"). Without limiting the foregoing, such forward-looking information includes statements regarding the process and completion of any Offering, the use of proceeds of the Offering and any statements regarding the Company's business plans, expectations and objectives. In this news release, words such as "may", "would", "could", "will", "likely", "believe", "expect", anticipate", "intend", "plan", "estimate" and similar words and the negative form thereof are used to identify forward-looking information.
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