Magna Terra Extends the Surface Footprint of the Birch Zone to 4.4 Kilometres at the Humber Copper Project, Western Newfoundland

Magna Terra extended the Birch Zone copper-silver footprint to 4.4 km with strong surface assays.

What the company is saying

Magna Terra Minerals Inc. reports that its summer 2026 surface prospecting at the Humber Copper Project has extended the Birch Zone copper and silver mineralization to 4.4 kilometres. The company emphasizes the success of its Phase 1 exploration, highlighting the expansion of the dolomite-hosted mineralization from 2.2 km to 2.7 km and the discovery of additional mineralization over 1.7 km southwest in new host rocks. Management, led by President and CEO Lew Lawrick, frames these results as evidence of a dynamic and structurally controlled mineralizing environment, with the identification of multiple host rocks seen as a positive indicator for further growth. The release details the technical work completed—246 rock samples (60% from Birch Zone and Hughes Lake Trends), 436 soil samples, 169 stream sediment samples, and a LiDAR survey—while noting that results for soils and stream sediments are still pending. The company also announces plans for a 20-line kilometre Induced Polarization geophysical survey at the Birch Zone to refine future drill targets. Magna Terra acknowledges partial financial support from the Province of Newfoundland and Labrador's Junior Exploration Assistance Program.

What the data suggests

The disclosed data show that Magna Terra has materially increased the surface strike length of copper-silver mineralization at the Birch Zone to 4.4 km, with the dolomite-hosted segment expanded from 2.2 km to 2.7 km and new mineralization identified over 1.7 km to the southwest in mafic volcanic and sedimentary rocks. Of 246 rock samples collected, 44 (17.9%) returned over 500 ppm Cu, with copper assays up to 2.20% and silver up to 35.3 g/t. Four samples (1.6%) exceeded 5 ppm Ag. Soil and stream sediment sampling (436 and 169 samples, respectively) has been completed, but results are pending. The project covers a large 49,925-hectare land package, and the Hughes Lake Copper Trend extends over 8+ km. The company has not disclosed any resource estimates, drilling results, or economic studies, but the technical results indicate a potentially extensive mineralized system. The acquisition was cost-effective, with no royalties or option payments, and the project benefits from year-round road access. The data quality for technical exploration is high, but no financial or economic metrics are provided.

Analysis

The announcement is a detailed exploration-stage update, providing specific and credible technical data: sample counts, assay results, and clear descriptions of the expanded mineralized footprint at the Humber Copper Project. The majority of claims are realised and supported by disclosed data, with only a minority of statements being forward-looking (pending results, planned geophysical survey). There is no evidence of exaggerated or promotional language; the tone is positive but proportionate to the results. No large capital outlay or immediate financial impact is disclosed, and the project remains at an early exploration stage, so long-term timelines are appropriate and not overstated. The only forward-looking elements are routine next steps (pending assays, planned surveys), which are standard for this stage and not hyped. The gap between narrative and evidence is minimal, with all key claims substantiated by the data.

Risk flags

• ●The project is still at an early exploration stage, with no drilling, resource estimate, or economic assessment disclosed. This means there is significant uncertainty about the continuity, grade, and economic viability of the mineralization.
• ●Assay results are from selective grab samples, which may not represent true average grades across the mineralized zones. This introduces sampling bias and limits confidence in the scale or quality of mineralization.
• ●Pending soil and stream sediment results, as well as the planned IP survey, could materially change the perceived potential of the project, either positively or negatively. There is risk that follow-up work does not confirm or extend the current surface results.
• ●No financial figures, budgets, or funding details are disclosed beyond a reference to partial government assistance, leaving the company's ability to finance further exploration unclear.
• ●The project’s value is contingent on successful future exploration and market conditions for copper and silver, both of which are subject to external commodity price volatility and investor sentiment.

Bottom line

Magna Terra’s update demonstrates technical progress at the Humber Copper Project, with the Birch Zone copper-silver mineralization now traced over 4.4 km and strong surface assays up to 2.20% Cu and 35.3 g/t Ag. The operational data are robust for this stage, but all results are from surface sampling and selective grabs, with no drilling or resource estimate yet. The company is moving systematically, with soil and stream sediment results and an IP survey planned, but all value realization remains long-term and highly speculative. Investors should view this as an early-stage technical success, not a de-risked development story. The most important takeaway is that Magna Terra has established a large, mineralized footprint with multiple host rocks, but the economic significance will only become clear after further exploration and drilling.

Announcement summary

(TSXV:MTT) Magna Terra Minerals Inc. announced that summer surface prospecting has extended the strike extent of the Birch Zone copper and silver mineralization to 4.4 kilometres at the Humber Copper Project in western Newfoundland. The Phase 1 2026 exploration program followed up on the 2025 discovery of the 2.2-kilometre Birch Zone and identified several high-priority geophysical and geochemical targets. Work completed at Humber includes the collection of 246 rock grab outcrop and float samples, with 148 samples (60%) from the Birch Zone and Hughes Lake Trends, 436 soil samples to test an additional 3 kilometres southwest of the Birch Zone, 169 regional stream sediment samples, and a property-wide LiDAR survey. The Birch Zone dolomite-hosted mineralization was extended by 0.5 kilometres to the northeast, expanding the surface copper and silver mineralization footprint from 2.2 kilometres to 2.7 kilometres, with assays up to 1.60% Cu and 1.7 g/t Ag. Additional copper and silver mineralization was discovered over 1.7 kilometres southwest of the Birch Zone, hosted in mafic volcanic/intrusive and clastic sedimentary rocks, with significant assays of 2.20% Cu, 35.3 g/t Ag, and 129 ppb Au, and 1.28% Cu and 15.0 g/t Ag. Further copper mineralization was identified 2.7 kilometres southwest along strike near Little North Pond, with assays up to 0.26% Cu and 2.1 g/t Ag. Of the 246 rock samples, copper values ranged from 5 to 22,000 ppm (2.20%) Cu, and 44 samples (17.9%) analyzed over 500 ppm Cu. Silver values ranged from 0.2 to 35.3 ppm (g/t) Ag, with 4 samples (1.6%) analyzing over 5 ppm Ag. The Hughes Lake Copper Trend extends over 8+ kilometres. The Humber Copper Project covers a district-scale land package of 49,925 hectares. The project is accessible year-round with road access to most of the property and was acquired through staking, with no underlying royalties or option payments. Magna Terra acknowledged partial financial assistance from the Province of Newfoundland and Labrador under the Junior Exploration Assistance Program (JEA). Lew Lawrick, President and CEO of Magna Terra Minerals Inc., stated that the 2026 prospecting and mapping program has been very successful, highlighting the extension of the Birch Zone and the identification of multiple host rocks as indicative of a dynamic mineralizing environment. The company is planning a 20-line kilometre Induced Polarization ground geophysical survey at the Birch Zone to develop more specific targets for future advanced testing. David A. Copeland, P.Geo., Vice President Exploration, is the Qualified Person for the release. Magna Terra Minerals Inc. is focused on acquiring and advancing mineral projects in Atlantic Canada and Argentina, including 100%-owned Humber Copper and Shellbird Projects in Newfoundland and Labrador, and a 100% interest in six precious metals projects covering approximately 79,000 hectares in Santa Cruz, Argentina, available for purchase or option/joint venture. The company has active option agreements on its Great Northern Project in Newfoundland and Luna Roja Project in Santa Cruz with Gold Hunter Resources and Lunex Metals, respectively.

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