Temas Resources Confirms Extensive High-Grade Mineralisation and Multiple Critical Mineral Credits at La Blache

Historic Hervieux West Re-Assay Program Validates High Grade Ti-V Mineralisation, Confirms Gallium, Scandium and Chromium Potential, and Advances Future Resource Growth

Highlights

• Initial results from Temas' systematic re-assay program at the Hervieux West deposit confirm extensive high-grade titanium-vanadium mineralisation and validate the continuity of the mineralised system across the expanded La Blache Project.

• Material grades of six critical and strategic metals at La Blache will inform the next phase of extractive‑metallurgy development using Temas' proprietary Regenerative Chloride Leach (RCL) Platform Technology.

• Re-assays using Temas' preferred fused-bead analytical methodology provide enhanced analytical consistency while confirming valuable concentrations of titanium, vanadium, iron, gallium, scandium and chromium within the mineralised zones.

• Results highlight the large scale and thickness of the Hervieux West mineralized body, underpinning confidence in future geological modelling and resource development.

• The successful recovery of more than 36 kilometres of historic drill core is expected to accelerate future technical studies and substantially reduce the time and cost required to advance the expanded La Blache Project.

• The current program represents the first phase of a broader re-assay initiative, with additional Hervieux West results expected shortly, followed by the commencement of the Hervieux East re-assay program.

• The expanded analytical dataset will support geological modelling, resource updates and engineering studies across the Company's flagship titanium-vanadium project in Québec.

Why this Matters to Investors

• Confirms the continuity and scale of high-grade titanium-vanadium mineralisation across the expanded La Blache Project.

• Accelerates future resource estimation and development studies by leveraging recovered historic drill core rather than undertaking extensive replacement drilling.

• Enhances project value through confirmation of additional critical minerals including gallium, scandium and chromium, with potential to provide incremental economic upside.

• Creates a pipeline of near-term catalysts as additional re-assay results, geological modelling and updated resource work are delivered.

• Aligns metallurgy with geology, with the expanded critical‑metals dataset guiding the geometallurgical application of Temas' proprietary RCL Platform Technology at La Blache.

Selected Significant Mineralized Intercepts:

• HWR-10-052 with 143.0m @ 88.7% Fe₂O₃ + TiO₂, 0.48% V₂O₅ and
  1,431 ppm Cr, 60.5 g/t Ga and 19.2 ppm Sc from 47m,

• HWR-10-034 with 27.3m @ 88.2% Fe₂O₃ + TiO₂, 0.44% V₂O₅ and
  786 ppm Cr, 57.6 g/t Ga and 19.2 ppm Sc from 32.7m,

• HWR-10-034 with 24.2m @ 90.4% Fe₂O₃ + TiO₂, 0.45% V₂O₅ and
  760 ppm Cr, 59.0 g/t Ga and 20.0 ppm Sc from 4.3,

• HWR-10-051 with 22.3 @ 77.3% Fe₂O₃ + TiO₂, 0.37% V₂O₅ and
  817 ppm Cr, 50.4 g/t Ga and 20.1 ppm Sc from 70m,

• HWR-10-051 with 11.2m @ 87.5% Fe₂O₃ + TiO₂, 0.48% V₂O₅ and
  1,354 ppm Cr, 59.3 g/t Ga and 19.3 ppm Sc from 112.6m,

• HWR-10-014 with 11.3m @ 78.1% Fe₂O₃ + TiO₂, 0.40% V₂O₅ and
  1,812 ppm Cr, 52.6 g/t Ga and 18.0 ppm Sc from 3.0m,

• HWR-10-043 with 10.2m @ 90.2% Fe₂O₃ + TiO₂, 0.47% V₂O₅ and
  910 ppm Cr, 61.1 g/t Ga and 19.6 ppm Sc from 142.9,

• HWR-10-045 with 9.1m @ 82.5% Fe₂O₃ + TiO₂, 0.40% V₂O₅ and
  831 ppm Cr, 55.9 g/t Ga and 17.1 ppm Sc from 72.3.

These results provide a consistent basis for comparison of the deposits across the property and reinforce the presence of broad, high-grade Fe-Ti-V oxide mineralisation within the Hervieux West system.

VANCOUVER, BC / ACCESS Newswire / June 29, 2026 / Temas Resources Corp. ("Temas" or the "Company") (ASX:TIO)(CSE:TMAS)(OTCQB:TMASF)(FSE:26P0) is pleased to announce the first results from its systematic re-assay program at the Hervieux West deposit within its 100%-owned La Blache Titanium-Vanadium Project in Québec, Canada.

As previously announced on March 27, 2024, Temas entered into an option agreement to acquire a 100% interest in the La Blache Lake Extension property. The property lies immediately west and along trend from the Company's Farrell-Taylor mineralisation. This original claim block includes drill defined mineralisation at both the Hervieux East (HE) and Hervieux West (HW) deposits.

The Company's claims lie within the La Blache anorthosite complex, hosted by anorthosite, leucotroctolite or leuconorite, and are coincident with the fold hinge of a regional anticline. Mineralisation appears to occur sub-parallel to this axis, with mineralisation at Hervieux West (HW), Hervieux East (HE), Hervieux East Extension (HEE) and Schmoo Lake (Schmoo) being added to Farrell-Taylor (FT) and Farrell-Mason (FM) trend that were already in Temas' control. Temas is now positioned to advance the three currently drill-defined deposit areas (FT, HW, HE), with significant upside where mineralisation can be extended in several areas as indicated on the map.

Figure 1: Map of La Blache Mineral Property, including Known Deposit Locations

The program is designed to unlock the full value of the recently expanded La Blache Project by applying a consistent analytical methodology across both historical and modern drilling datasets. The initial results validate extensive titanium-vanadium-iron oxide mineralisation while also confirming the presence of gallium, scandium and chromium within the mineralised system. Together, these critical minerals have the potential to enhance the long-term value of the Project as Temas progresses future resource estimation, metallurgical optimisation and development studies. The added impact of material concentrations of 6 critical and strategic metals at La Blache, inform Temas management on the direction and next steps for extractive metallurgy innovation using the Temas proprietary Regenerative Chloride Leach (RCL) Platform Technology.

Importantly, the Company fully recovered more than 36 kilometres of historical drill core, providing a major strategic advantage by allowing wholesale re-assay and geological review without the cost and time associated with replacement drilling. Management believes this work materially accelerates the technical advancement of the expanded La Blache Project while reducing exploration risk and preserving capital.

The analytical program utilises Temas' preferred fused-bead assay methodology to improve analytical consistency across the Project and to provide a robust dataset for future geological interpretation and resource evaluation. The results reported in this release form the first stage of a broader re-assay campaign aimed at strengthening confidence in La Blache's titanium‑vanadium mineralisation and defining the distribution of key accessory critical metals.

CEO Commentary

Temas President and Chief Executive Officer Tim Fernback commented:

"These initial results represent another important milestone in unlocking the full value of our expanded La Blache Project. The successful recovery and systematic re-assay of more than 36 kilometres of historic drill core provides us with an exceptional opportunity to accelerate our technical development while significantly reducing both cost and execution risk.

The results continue to confirm the scale and continuity of high-grade titanium-vanadium mineralisation while also demonstrating the presence of valuable critical minerals including gallium, scandium and chromium. As governments and industry increasingly focus on securing reliable supplies of critical minerals, we believe La Blache is becoming an increasingly strategic North American asset.

This work provides an important foundation for geological modelling, resource updates and engineering studies as we continue advancing La Blache toward development. With additional Hervieux West results expected shortly, followed by Hervieux East, we look forward to delivering a steady pipeline of technical and corporate catalysts for shareholders."

Systematic Re-Assay Program Strengthens Confidence in La Blache

The Hervieux West re-assay program forms part of Temas' broader strategy to establish a consistent analytical database across the expanded La Blache Project. The program validates historical drilling using the Company's preferred fused-bead analytical methodology while providing enhanced geochemical data to support geological modelling, resource estimation and engineering studies.

By re-assaying historical drill core recovered from the Project, Temas significantly accelerates technical evaluation while reducing the cost, time and environmental footprint associated with extensive replacement drilling. The Company considers this an efficient pathway toward advancing the Project through its next phase of development.

The current focus is on confirming the distribution and continuity of titanium, vanadium and iron mineralisation while also quantifying strategic accessory critical metals including gallium, scandium and chromium. These additional elements have the potential to enhance Project economics and further support La Blache's position as a key North American critical mineral asset.

The results released today represent the first phase of the Hervieux West re-assay campaign, with additional assay results expected over the coming weeks as laboratory work progresses.

Re-Assay Results Confirm Extensive Mineralisation

The initial results continue to demonstrate the exceptional scale, continuity and thickness of the titanium-vanadium-iron oxide system at Hervieux West. Importantly, the program confirms the consistency of the mineralised horizons using Temas' preferred analytical methods and provides greater confidence in the distribution of critical metals throughout the deposit.

The Company believes these results will provide a key technical foundation for geological modelling and for the integration of the Hervieux West dataset into property wide resource evaluation and development studies in the future.

Supporting Future Resource Growth

Hervieux West is one of several significant titanium-vanadium deposits within the expanded La Blache Project. The current re-assay program is improving analytical consistency across historical datasets and providing additional confidence for future geological interpretation.

The program supports Temas' objective of incorporating a broader critical minerals suite into project evaluations, including gallium, scandium and chromium where appropriate. By leveraging the substantial historical drilling investment, the Company expects to enhance the efficiency of future resource development activities and strengthen the technical basis for subsequent engineering studies.

As further results are received, Temas will continue to refine its geological understanding of the La Blache and advance the Project toward resource updates and development studies.

Drill Results Overview

The original Hervieux West drilling program was carried out in two phases: Phase I consisted of holes HW-10-001 to HW-10-040 drilled in winter, and Phase II consisted of holes HW-10-041 to HW-10-060 drilled in the summer months. The historic operator was successful in defining significant volumes of mineralisation with a nominal drill spacing of 50 m, as well as defining edges to the deposits. The original detailed geologic database has been significantly improved through the relogging and re-assaying program allowing Temas to build a robust geometallurgic model when coupled with our RCL testing results to constrain a robust maiden MRE for the Company.

Table 1: Significant Drill Intercepts for Hervieux West Drilling* Received to Date

* DH designators are HWR indicating that these are the re-assay of the recovered historic core. Cut-off grades for massive oxide classification are 78% Fe₂O₃ + TiO₂ + ≤4.5% MgO, with internal dilution of 2.9m and minimum composite of 2.5m. Massive oxide classification requires a maximum of 4.5% MgO. Cut-off grades for semi-massive oxide classification and determination of a significant intercept are 20% Fe₂O₃ + TiO₂ + ≤4.5% MgO, with internal dilution of 2.9m and minimum composite of 2.5m. V₂O₅ (%) has been recalculated from V (ppm) using the ALS oxide conversion factor of 1.785 for V to V₂O₅.

Table 1 presents the results of the first 32 drill holes received with 12 drill holes returning significant mineralisation intercepts, and 20 drill holes defining the outer edges of the mineralized body. The intercepts calculated from the 2026 assay dataset using length-weighted compositing. The table reports downhole intervals and does not imply true widths. All average grades are length-weighted over the reported composite interval, including any internal dilution allowed under the stated criteria. There are 28 holes, pending results from ALS Limited, lying predominantly within the mineralized volume of the known deposits which will be the subject of a separate press release.

The Temas geological team selected the initial 32 drill holes, which represent the margins of the Hervieux West deposit, as the first phase of the re-assay program in order to better understand the distinction between the Massive Oxide ("MO") and the Semi-massive Oxide ("SMO") mineralisation on the contact with the host rock, and to identify areas where the deposit might remain open. The second phase of the Hervieux West re-assay program will focus on holes primarily defining the core of the MO mineralisation drilled to date, and where Temas expects to confirm high-grade Fe₂O₃ + TiO₂ intervals across of the majority of the 28 remaining RHW-series drill holes that are pending re-assay based on the visually distinct massive vanadium titanomagnetite (VTM) is easily identified.

The mineralisation within the known La Blache VTM system is dominantly characterised by massive and subordinate semi-massive Fe-Ti-V oxide hosted within the La Blache Anorthosite Complex. The 60 historic holes currently defining the Hervieux West deposit represent a total of 9,352 m. These holes were drilled over a strike distance of 950 m along a northeast-southwest axis. The topography of this block has many hills, with some to force drilling of some holes in the interpreted direction of the dip of the mineralisation. The holes were either oriented N334° or N154° with a plunge of -50°. Selected holes were drilled at a plunge of -70° or -87° to test the continuity of the mineralisation at depth.

Table 2: Collar Details for Historic Hervieux West Drilling, Provided in NAD83/UTM Zone 19N. Holes with significant intercepts are in black bold font, and the holes used to map and define the edges of the deposit are in blue font.