Mr. David Hottman reports

ORESTONE EXPANDS FRANCISCA GOLD - SILVER PROJECT TO TWENTY-THREE SQUARE KILOMETRES AND ACQUIRES IMPORTANT GEOPHYSICAL SURVEY DATA

Orestone Mining Corp. has expanded the Francisca gold-silver project with the acquisition of the Francisca II concession and the purchase of historic geophysical survey data over the current and new land positions. The Francisca gold-silver project now encompasses 23 square kilometres of mineral concessions located in Salta province, northwestern Argentina, approximately 80 kilometres northwest of the city of Salta. It is accessed by gravel roads off the paved National Highway RTE 51.

Oxide gold stockwork mineralized trend

With the addition of the Francisca II concession, the mineralized trend now covers a northwest strike length of 1,500 metres, where an oxide gold-silver stockwork, vein and breccia system can be observed at surface in numerous large outcropping areas (North cluster, South zone and Kelly zone). The outcropping zones are surrounded by a 500-to-1,000-metre-wide area of strongly hornfels-altered sediments, further defined by a 1,700-metre-long-by-500-to-700-metre-wide induced polarization chargeability anomaly of 7.9 millovolts per volt that appears to be related to gold-silver mineralization. Several large, strong IP chargeability anomalies measuring up to 20 mV/V indicate the potential for a larger buried gold porphyry. The oxide gold quartz limonite stockwork trend is associated with quartz feldspar porphyry intrusive dikes and intense sericite clay alteration along a northwest-trending fault system.

David Hottman, Orestone's chief executive officer, stated: "The Francisca II concession is a meaningful addition to our land position at Francisca. The mineralized trend taking shape is being derisked through methodical exploration to define drill targets. Results from the initial mapping and sampling program are very encouraging and demonstrate that a robust gold system is present and is partially exposed on the surface while the recently acquired geophysical data is showing us a potentially much larger system at depth. Results from the recent exploration program are being compiled in preparation for a phase I drilling program."

Induced polarization and magnetic surveys

Orestone has acquired, at minimal cost, results of a time domain induced polarization, resistivity and total field magnetic surveys carried out on the property in March, 1999, by Quantec Geofisica Argentina SA, a subsidiary of the internationally known and well-respected Quantec Geoscience Group. The surveys were carried out for a previous operator over an area located within the Francisca I, Francisca II and Flamingo I concessions now controlled by Orestone Argentina SAU.

The survey area was approximately one kilometre by two kilometres, oriented northwest-southeast with 50-metre stations on 100-metre-spaced lines, and was optimized for a depth of 180 metres. A broad trend measuring 1700 metres long by 500 to 700 metres wide was defined by the survey including several strong chargeability features that may be attributable to a deeper, extensive mineralized system. Orestone considers these data as historic in nature but is investigating the possibility of using newer methods of processing to enhance the interpretation of these data.

Francisca II concession

The Francisca II concession, consisting of 14.40 square kilometres, was acquired for $104,000 (U.S.) after being declared available for staking by the Mining Court of the Province of Salta. The Francisca II concession is contiguous with the Francisca I and Flamingo I concessions held by the company under an option to purchase agreement between the company and two private Argentine individuals (as previously announced Feb. 11, 2025, and Sept. 17, 2025). The Francisca II concession will become part of the Francisca property under the option agreement.

Exploration update

On May 7, the company announced initial assay results received from the phase 1 exploration program on the Francisca gold project. This program included mapping, resampling of existing trenches and prospecting of the north-south mineralized trend. Approximately 15 per cent of the 675 sample assays have been reported, with the balance anticipated in the coming weeks.

At the South Gold zone, mapping indicates a stockwork width from 40 to 70 metres averaging 50 metres along a 400- to 500-metre strike length. The zone consists of highly sericitic argillic altered porphyry and hornfels host rocks cut by a dense stockwork of thin light brown limonite veinlets with thin dark quartz vein centres and thicker dark limonite quartz veins that are both vertical and shallow dipping.

Previously excavated trenches were renumbered, cleaned of debris, and chip or continuous chip channel samples were taken. Trench T7 was sampled over a length of 72.31 metres with two well-mineralized intervals encountered: 36.97 metres grading 0.78 gram per tonne gold with 7.20 g/t silver and 11.72 metres grading 0.58 g/t gold with 4.80 g/t silver. These intervals are separated by a low-grade mineralized interval of 9.40 metres. Trench T8 was sampled over a length of 83.93 metres with two well-mineralized intervals encountered: 23.47 metres grading 4.71 g/t gold with 28.54 g/t silver and 11.72 metres grading 1.95 g/t gold with 12.11 g/t silver. These intervals are separated by a low-grade mineralized interval of 13.18 metres. Assay results for the first two trenches at Francisca compare favourably with historically reported data and confirm that a robust gold-silver mineralized stockwork system is present.

The work program was carried out under the direct supervision of an experienced professional senior geologist registered in the province of Salta in Argentina, supervised by Gray Nordin, PGeo, registered in British Columbia. Historic trenches that were oriented to crosscut the mineralized zones at right angles were cleaned prior to sampling. Continuous chip samples were taken along the trenches over 0.20- to 4.70-metre intervals. Chip channel samples were taken over 0.20- to 1.0-metre intervals in mineralized areas between and surrounding the trenches. Samples weighed approximately two to 3.5 kilograms. In addition to Alex Stewart's in-house quality assurance/quality control, blanks, duplicates and standards were inserted in a ratio of 14 per cent of the total samples submitted for assay for additional data verification and QA/QC. Samples were bagged and sealed with zip ties and collected at site and maintained under a chain of custody until they were collected by the laboratory from a secure facility in the town of Campo Quijano. Samples were analyzed by an independent, internationally recognized, analytical laboratory, Alex Stewart International Argentina, in Zapala city, Jujuy, Argentina. They were analyzed for gold by fire assay on a 30-gram subsample and for silver and other elements by ICP-MA for 39 elements. High-grade samples were cut to 4.0 g/t for gold and 88 g/t for silver to control their effect of overstating values calculated by using weighted averages.

About Orestone Mining Corp.

Orestone is a well-financed, Canadian-based company with an internationally experienced management team. The board of directors and management team have experience in all aspects of the mining business, having been involved in numerous corporate and project level successes. Orestone's property portfolio includes exposure to gold, silver and copper on projects located in Canada and Argentina. Its near-term objective on the Francisca gold project, located in Salta, Argentina, is to define an oxide gold deposit minable by open-pit methods. The company's 100-per-cent-owned Captain gold-copper project, located in British Columbia, Canada, hosts a large gold-dominant porphyry system that is permitted for 79 drill locations. Both projects are road accessible and suitable for exploration year-round.

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