Terra Critical Minerals Uncovers 5.21% Tin Discovery at Silent Grove

Terra Critical Minerals Strikes High-Grade Tin at Silent Grove Project: Up to 5.21% Tin Grades Signal Major Discovery Potential

Terra Critical Minerals (ASX:T92) has announced a significant expansion of its New South Wales tin portfolio with the granting of exploration licence EL9872 and the identification of exceptional tin grades reaching up to 5.21% at the historic Silent Grove Tin Project. This Terra Critical Minerals tin discovery positions the company to capitalise on surging tin prices, which have climbed over 50% this year amid critical mineral supply constraints.

The Silent Grove Project sits on the northern edge of the renowned Mole Granite in NSW's New England Region – a geological formation recognised as the major tin granite in the district. The area's rich mining heritage includes over 350 hard rock and alluvial tin mines, along with associated wolfram, bismuth, silver, molybdenum and topaz workings, establishing it as one of Australia's premier tin provinces.

Furthermore, the strategic timing of this discovery aligns perfectly with current market dynamics. "T92 is delighted to have identified significant tin mineralisation over such a large and untested area. This is an exciting project," stated Andrew Vigar, Chairman.

Outstanding Historical Results Reveal Untapped Potential

According to the announcement, Terra's comprehensive review of historical NSW Government sampling data has uncovered remarkable tin grades across multiple prospects within the Silent Grove Project area. However, these exceptional grades represent only the beginning of what could be a transformative discovery for the company.

These results, compiled from the NSW Government's Minview Database, represent grab samples from historical workings across approximately 15 alluvial and hard rock tin mines within the project area. Additionally, the company's JORC Competent Person confirmed that the historical work was conducted in compliance with JORC Code 2012 requirements.

Critical Mineral Timing: Tin Market Dynamics Favour Exploration

The timing of this Terra Critical Minerals tin discovery couldn't be more strategic. For instance, tin has been designated as a Critical Mineral due to severe supply constraints, with China controlling 80% of global production. Recent market dynamics highlight the urgency across major markets.

Recent price movements demonstrate the market's appetite for tin exposure:

• India: 12% price surge recently
• Italy: Dramatic 43% price increase
• Global: Over 50% price appreciation in 2025

This price momentum stems from growing demand across electronics, healthcare applications, and the shift toward non-toxic metal usage. Moreover, supply remains constrained by China's market dominance, creating opportunities for new suppliers in stable jurisdictions like Australia.

Understanding Cassiterite: The Key to Tin Wealth

Cassiterite is the primary tin-bearing mineral and the most important ore of tin. This mineral typically occurs in high-temperature fluid-formed veins associated with granite intrusions – exactly the geological setting found at Silent Grove.

For investors, cassiterite grades above 1% tin are considered highly significant. Therefore, Terra's grades of up to 5.21% are exceptionally attractive for potential economic extraction, representing some of the highest grades discovered in Australian tin exploration in recent years.

Strategic Location in Proven Tin Province

According to the report, the Silent Grove Project benefits from its position within the Mole Granite complex – a geological formation with an extraordinary mining pedigree spanning over 140 years. The project area straddles the northeastern contact of the Permo-Triassic Mole Granite with Permian and Carboniferous sediments, creating ideal conditions for tin formation.

Key Geological Advantages:

• Proven tin province with 350+ historical mines
• Multiple styles including hard rock veins and alluvials
• Associated valuable metals including wolfram, bismuth, silver, and molybdenum
• Structural controls along northeast-southwest granite grain
• Unexplored potential with no modern exploration techniques applied

The Silent Grove Mine itself was discovered in 1873 and worked a main structure averaging 1.2m width over 250m strike. This demonstrates the continuity of formation that remains largely untested by modern methods, highlighting significant exploration upside potential.

What Makes This Discovery Different from Previous Tin Projects?

In contrast to many exploration projects, the Silent Grove Project benefits from 140+ years of historical production data providing confidence in geological continuity. However, no modern exploration techniques have ever been systematically applied across the broader project area.

Furthermore, the multi-metal nature of the mineralisation adds significant value potential. The presence of silver grades up to 79 g/t and tungsten credits creates additional revenue streams that could materially enhance project economics.

Comprehensive Exploration Programme Ahead

The announcement outlines an ambitious exploration strategy to advance the Silent Grove Project through systematic modern exploration techniques.

Phase 1: Modern Systematic Approach

• Field mapping and sampling using modern ICP-MS technology
• Soil and rock sampling across target areas to detect alteration patterns
• Target definition for drilling programmes

Phase 2: Resource Definition

• Targeted drilling at Silent Grove and extensions
• Modern exploration techniques never before applied to the area
• Resource estimation following successful drilling programmes

The permitting process for fieldwork is underway with activities planned for Q2 2026. Consequently, Terra is positioned to rapidly advance this high-potential project whilst tin prices remain elevated.

Investment Thesis: Critical Minerals Discovery at the Right Time

Terra Critical Minerals presents a compelling investment opportunity at the intersection of critical mineral demand and proven geological potential. The Terra Critical Minerals tin discovery represents a rare combination of high-grade mineralisation in a proven geological setting.

1. Exceptional Grades: Up to 5.21% tin grades rival world-class tin deposits globally

2. Proven Geology: Located in Australia's premier tin province with 350+ historical mines

3. Market Timing: Tin prices up 50%+ with supply constraints driving further upside

4. Exploration Upside: No modern exploration in 140+ years of mining history

5. Multi-Metal Potential: Significant silver, bismuth, and tungsten credits enhance project economics

6. Strategic Portfolio: Complements existing uranium assets in Canada's Athabasca Basin

The combination of high-grade historical results, proven geological setting, and favourable market conditions creates a unique opportunity. For investors seeking exposure to critical minerals supply chains, Terra offers diversified exposure across multiple commodities.

Why Investors Should Follow Terra Critical Minerals

Terra Critical Minerals has positioned itself as a diversified critical minerals explorer with assets in two of the world's premier mining jurisdictions – Australia and Canada. This Terra Critical Minerals tin discovery adds significant value to a portfolio that already includes uranium projects in Canada's Athabasca Basin.

Key Investment Highlights:

With upcoming exploration milestones at Silent Grove and continued advancement of uranium projects in Canada, Terra offers investors exposure to multiple critical mineral themes. In addition, the company's focus on jurisdictions with established mining infrastructure reduces development risks typically associated with exploration companies.

What Are the Next Key Catalysts?

The Q2 2026 exploration programme represents the primary near-term catalyst for Terra Critical Minerals. However, several additional factors could drive value creation:

• Tin price momentum continuing through 2025-2026
• Modern exploration results potentially identifying new high-grade zones
• Resource estimation following successful drilling programmes
• Strategic partnerships in Australia's critical minerals sector

Terra Critical Minerals has identified world-class tin grades up to 5.21% in a proven geological province that hasn't seen modern exploration. With tin prices surging over 50% and China controlling 80% of supply, the Silent Grove Project offers exceptional discovery potential in Australia's premier tin district. The Q2 2026 exploration programme could be a major catalyst for the company.

Ready to Discover the Next High-Grade Tin Breakthrough?

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