# ORVANA PROVIDES TAGUAS DRILLING UPDATE: FULL ASSAY RESULTS FROM TADD-278; SECOND HOLE RESULTS PENDING *2026-05-27T06:30:00-04:00* ORVANA PROVIDES TAGUAS DRILLING UPDATE: FULL ASSAY RESULTS FROM TADD-278; SECOND HOLE RESULTS PENDING Canada NewsWire **TSX:ORV OTCQX: ORVMF** **Highlights** - Petrographic studies completed on core samples from first drill hole TADD-278, indicate that the mineralized host rock corresponds to a dacitic porphyry (Image 1). - Intense sericitic alteration was identified, dominated by quartz–sericite–pyrite, with pyrite–rich mineralization plus associated enargite and/or chalcopyrite in disseminations and veinlets (Image 2), supporting a porphyry–related system. - Complete lab results from TADD-278 (Table 1), highlights a 205 metres (downhole length; true widths not yet determined) interval (715 to 920 metres), with 0.25 g/t gold and 0.12% copper. - Completion of second drill hole TADD-279 assay results, plus VNIR-SWIR Terraspec measurements, and geochronological studies is expected over the coming months to position Orvana for its October 2026 – April 2027 drilling campaign. TORONTO, May 27, 2026/CNW/ - **Orvana Minerals Corp.**(TSX: ORV) (OTCQX: ORVMF)**("Orvana****" or "the Company")**, is pleased to provide a further update on its deep drilling campaign at its 100%-owned Taguas Project in San Juan, Argentina, including additional assay results beyond those previously reported on April 8, 2026, and an update on planned next steps, with laboratory analyses and supporting studies ongoing. Raúl Álvarez, Director of Exploration and Technical Services of Orvana, commented: "_The latest drilling and ongoing technical studies continue to support our interpretation of a deep porphyry-related system at Taguas. The integration of VNIR–SWIR Terraspec data, geochemistry, and geological interpretation is helping us to vector toward the core of the system and refine targets for the next drilling phase._" **Strategic Context** - The Company has expanded its evaluation of the Taguas Project beyond the near-surface oxidized gold-silver resource outlined in the 2021 Preliminary Economic Assessment (dated December 29, 2021, available at [www.sedarplus.ca](http://www.sedarplus.ca)) to include the underlying sulfide mineralization and potential porphyry-style copper-gold mineralization. - The Company completed an updated geological model for the Taguas Project and conducted a geophysical survey, designed to identify potential deeper targets to a depth of 1,500 metres. - Results from the geophysical survey, combined with the recent review of historical exploration data have been used to prioritize key targets for the initial deep drilling. **Deep Drilling Results to Date** - The FY2026 program comprised 2 drill holes (Image 3), totaling 2,173.7 metres drilled. First drill hole TADD-278 reached 1,331.7 metres and second TADD-279, 842 metres. The program has been concluded in anticipation of the winter season. The second drill hole has been cased, preserving the option to resume and continue drilling during the next summer field campaign. - Petrographic studies completed on drill core samples from hole TADD-278 indicate that the mineralized host rock corresponds to a dacitic porphyry (Image 1). The analyzed intervals display a well-developed porphyritic texture characterized by quartz, plagioclase and subordinate mafic phenocrysts set within a strongly silicified and sericitized groundmass, consistent with a hydrothermal porphyry system. - The studies also identified intense sericitic alteration assemblages dominated by quartz-sericite-pyrite. Ore mineralization is primarily composed of pyrite with associated enargite and/or chalcopyrite (Image 2), occurring as disseminations and veinlet fillings, further supporting the interpretation of a dacitic porphyry-related hydrothermal system. - Complete lab results from TADD-278 (Table 1), highlighting interval from 715 to 920 metres, returned 0.25 g/t gold and 0.12% copper over 205 metres (downhole length). Chalcopyrite occurs only in trace amounts, while pyrite dominates. Assay data and identified mineralogy support the interpretation that drilling remains within the upper to intermediate levels of the mineralized system. The most significant intercepts from drill hole TADD–278 are detailed in Table 1 below: **Table 1**. _Selected __intercepts from TADD-278_ | **DDH** | **From** | **To** | **Downhole length (m)** | **Au (g/t)** | **Ag (g/t)** | **Cu (%)** | | --- | --- | --- | --- | --- | --- | --- | | TADD-278 | 490.00 | 492.00 | 2.00 | 32.34 | 4.50 | 0.06* | | TADD-278 | 536.00 | 552.80 | 16.80 | 0.32 | 4.20 | 0.81* | | including | 536.00 | 537.00 | 1.00 | 1.34 | 20.00 | 5.39* | | including | 551.50 | 552.80 | 1.30 | 1.49 | 9.00 | 2.44* | | TADD-278 | 638.00 | 675.00 | 37.00 | 0.86 | 6.09 | 0.69* | | including | 672.00 | 675.00 | 3.00 | 5.62 | 10.20 | 0.29* | | TADD-278 | 715.00 | 920.00 | 205.00 | 0.25 | 1.82 | 0.12 | | including | 812.00 | 828.00 | 16.00