Critica Confirms 19Mt Tin-Tungsten Resource at Mt Lindsay Under JORC 2012
Key Takeaways
- Critica Limited has restated the Mt Lindsay Mineral Resource Estimate under JORC 2012, confirming a project-wide total of 19 Mt at 1.09% SnEQ, containing approximately 49 kt of tin and 28 kt of WO₃.
- The Indicated component alone totals 12 Mt at 1.22% SnEQ, providing the higher-confidence resource foundation required for scoping and feasibility studies.
- Pilot-scale metallurgical test work by previous owners Venture Minerals demonstrated 72% tin recovery and 83% tungsten recovery, reducing processing risk ahead of the scoping study.
- The Mt Lindsay and Jupiter Scoping Studies are both targeted for completion by end of Q3 2026 — a deadline that, given the announcement date of 14 September 2026, appears imminent.
- The project sits 20 km west of the operating Renison Bell tin mine in northwest Tasmania, with access to road infrastructure and Tasmania's renewable hydroelectric power network.
Mt Lindsay resource restated under JORC 2012, confirming 19 Mt at 1.09% SnEQ
Critica Limited (ASX: CRI) has restated the Mineral Resource Estimate (MRE) for its 100%-owned Mt Lindsay Tin-Tungsten Project in northwest Tasmania in accordance with the JORC Code (2012). This is a restatement of a prior estimate to the current reporting standard, not a new discovery.
The project-wide MRE stands at 19 Mt at 1.09% SnEQ (Indicated and Inferred combined), at a 0.4% SnEQ cut-off, containing approximately 49 kt of tin and 28 kt of WO₃. The Indicated component alone totals approximately 12 Mt, containing approximately 31 kt tin and 20 kt WO₃, spread across three deposits: Main, No.2, and Reward.
The restatement provides a current, credible JORC 2012 foundation for continued project evaluation and gives investors clarity on the scale and quality of the resource base.
When big ASX news breaks, our subscribers know first
Resource breakdown by deposit
The table below sets out the deposit-level resource at the preferred 0.4% SnEQ cut-off.
| Deposit | Material Class | Tonnes (Mt) | SnEQ % | Contained Sn (kt) / WO₃ (kt) |
|---|---|---|---|---|
| Main & No.2 | Indicated | 12 | 1.22% | 28 kt Sn / 20 kt WO₃ |
| Main & No.2 | Inferred | 2.3 | 0.85% | 3.8 kt Sn / 2.7 kt WO₃ |
| Livingstone | Inferred | 4.4 | 0.88% | 13 kt Sn / 4.7 kt WO₃ |
| Reward | Indicated | 0.34 | 1.06% | 2.7 kt Sn / 0.15 kt WO₃ |
| Reward | Inferred | 0.23 | 1.07% | 1.8 kt Sn / 0.12 kt WO₃ |
| Project Total (Indicated + Inferred) | 19 | 1.09% | 49 kt Sn / 28 kt WO₃ |
- The 0.4% SnEQ cut-off is the preferred reporting cut-off, reflecting grade continuity, metallurgical recoveries, and current commodity pricing. Alternative cut-offs are disclosed in the full announcement.
What is a JORC 2012 mineral resource — and why does it matter?
The JORC Code is the Australasian standard for publicly reporting mineral resources and ore reserves. It sets out the rules for how companies must estimate, classify, and disclose the size and quality of a mineral deposit, giving investors and project evaluators a consistent, regulated framework to assess what is in the ground.
When a resource is JORC 2012 compliant, it means a qualified Competent Person has assessed the data and confirmed that the classification and reporting methods meet the current edition of the code. Earlier estimates prepared under a prior edition are still valid in context but do not satisfy the requirements now expected by the market, financiers, and potential project partners.
Indicated vs Inferred — the confidence ladder
Resource classification sits on a confidence ladder. Indicated Resources carry higher geological confidence, supported by closer drill spacing and more complete data. They are more suitable for use in scoping and feasibility studies because the grade and continuity of mineralisation can be stated with reasonable certainty.
Inferred Resources carry lower confidence. Additional drilling is required to upgrade them to the Indicated category. Mt Lindsay’s approximately 12 Mt Indicated component, at the 0.4% SnEQ cut-off, underpins stronger near-term development optionality for the project.
Why a JORC 2012 restatement is a meaningful milestone
Previous estimates for Mt Lindsay were prepared under an earlier edition of the JORC Code. Restating under the 2012 edition is the current industry standard now required for modern project evaluation, offtake discussions, and financing conversations. This restatement is a compliance and credibility step rather than a resource upgrade, but it is a necessary one for Critica to advance Mt Lindsay through the next stages of development.
Critical minerals exposure across defence, semiconductors and advanced manufacturing
Mt Lindsay carries strategic significance beyond its tonnage figures. The project hosts two commodities — tin and tungsten — that sit at the centre of global supply chain debates involving defence, semiconductor manufacturing, and electrification.
Tungsten — a critical mineral in short Western supply
The approximately 28 kt of contained WO₃ at Mt Lindsay represents a significant tungsten resource. Tungsten is used in defence applications, aerospace components, and advanced manufacturing tools. Western supply chains for tungsten are heavily concentrated in China, which means Australian tungsten resources carry genuine strategic value for governments and manufacturers seeking supply diversification.
CEO Jacob Deysel
“Tungsten is a critical mineral with essential applications across defence, aerospace and advanced manufacturing, while tin is fundamental to electronics and semiconductors. […] The timing is also compelling. Tin and tungsten markets have strengthened significantly, while the strategic importance of secure Western supply chains for these metals continues to grow.”
Tin — foundational to electronics and the semiconductor supply chain
The approximately 49 kt of contained tin at Mt Lindsay connects the project to some of the fastest-growing technology markets. Tin is fundamental to electronics and semiconductors. The project’s location approximately 20 km west of the producing Renison Bell tin mine places it within an established Tasmanian mining address with recognised tin mineralisation.
Infrastructure advantage and metallurgical confidence
Two supporting pillars reduce development risk at Mt Lindsay: infrastructure access and demonstrated metallurgical performance.
On the infrastructure side, the project benefits from:
- Location in northwest Tasmania, approximately 20 km west of the operating Renison Bell tin mine, within an established mining district
- Access to existing road infrastructure
- Connection to Tasmania’s renewable hydroelectric power network, a genuine green energy advantage for future processing
Metallurgical test work conducted at pilot scale by previous owners Venture Minerals demonstrated strong recoveries across all three concentrate products. Pilot-scale test work on approximately 3 tonnes of representative Main and No.2 deposit material produced:
- A 45% Sn concentrate at an overall 72% tin recovery
- A tungsten concentrate exceeding 66% WO₃ at an overall 83% tungsten recovery
- A 65% Fe magnetite Iron Ore concentrate at 98% recovery
Further bulk and pilot metallurgical test work is currently in progress on selected mineralisation types to optimise concentrate grades and recoveries.
The next major ASX story will hit our subscribers first
What’s next — scoping studies and resource growth
With the JORC 2012 restatement complete, attention turns to the next stage of project advancement. The Mt Lindsay Scoping Study is progressing, with both the Mt Lindsay and Jupiter Scoping Studies targeted for completion by end of Q3 2026. Given the announcement date of 14 September 2026, this target appears imminent.
Additional points of note from the announcement:
- Resource growth potential remains, with the Main and No.2 mineralised systems open down plunge
- More than 88,000 metres of diamond drilling has been completed across the project, providing an extensive data foundation underpinning confidence in the resource base
Critica is advancing a dual-project critical minerals platform, pairing the Mt Lindsay tin-tungsten project with its Jupiter rare earths project in Western Australia, giving the company exposure to minerals central to defence, artificial intelligence, and electrification.
The Jupiter Project rare earth results, including a 97% TREO milestone achieved in August 2026, reinforce the metallurgical credibility of Critica’s second platform asset alongside Mt Lindsay.
Don’t Miss the Next ASX Critical Minerals Opportunity
Big News Blast delivers FREE breaking ASX mining and energy news directly to your inbox within minutes of release, complete with in-depth analysis. Join 30,000+ subscribers already getting the edge on tin, tungsten, and critical minerals stocks. Click the “Free Alerts” button to start receiving real-time alerts the moment market-moving news breaks.