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Sentinel Metals Limited (ASX:SNM) has signed a binding agreement to acquire the Big Springs Gold Project in Nevada, USA, from Capricorn Metals Limited (ASX:CMM), marking a significant milestone for the company. The Big Springs project contains a JORC 2012 Mineral Resource Estimate of 15.5 million tonnes at 2.0 grams per tonne gold, totaling 1.01 million ounces of gold, and is currently permitted for both open pit and underground Mining operations. This acquisition, combined with Sentinel's existing Columbia Gold-Silver Project in Montana, positions the company as a rising North American gold developer with a combined resource of approximately 2.0 million ounces. Investors will be closely monitoring Sentinel’s exploration drilling progress at both sites, with initial assay results from Columbia’s maiden drilling program anticipated in about six weeks.<\/p> <\/div>
Key Points<\/h3>
- Buyer: Sentinel Metals Limited (ASX:SNM); Seller: Capricorn Metals Limited (ASX:CMM)<\/li>
- Binding agreement to acquire Big Springs Gold Project in Elko County, Nevada, USA from Capricorn Metals<\/li>
- Big Springs features a JORC 2012 Mineral Resource Estimate of 15.5Mt at 2.0g/t Au for 1.01Moz gold, with an active Mining Lease approved for both open pit and underground mining<\/li>
- Combined resource base from Big Springs and Columbia Gold-Silver Project totals roughly 2.0Moz Au<\/li>
- Drill-ready targets within the current Mining Lease, with a planned program of about 10,000 metres<\/li>
- First assay results from Columbia’s maiden drilling expected in approximately six weeks<\/li>
- Transaction financial details were not disclosed<\/li>
- Investors should monitor acquisition completion, drilling outcomes at both projects, and progress on near-term production studies<\/li>
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Big Springs Acquisition Elevates Sentinel Metals to a ~2.0Moz North American Gold Developer<\/h2>
On 2 July 2026, Sentinel Metals announced it had executed a binding agreement to acquire the Big Springs Gold Project in northeast Nevada from Capricorn Metals Limited. The company described this transaction as transformational, combining Big Springs’ 1.01Moz gold resource with Sentinel’s Columbia Gold-Silver Project in Montana, which holds a Mineral Resource Estimate of 920,000 ounces of gold and 3.1 million ounces of silver. Together, these projects provide a combined resource base of about 2.0 million ounces of gold across two Tier-1 US mining jurisdictions.<\/p>
Sentinel stated that the acquisition enhances its scale, project pipeline, and strategic flexibility, positioning it to attract a wider array of North American and global institutional investors. Managing Director Matt Herbert highlighted Big Springs as a large-scale, advanced gold asset in a Tier-1 Jurisdiction with potential near-term production options and a strong pipeline of exploration and development opportunities. The company did not disclose the acquisition consideration.<\/p>
Big Springs’ JORC 2012 Mineral Resource Estimate: 1.01Moz Across Measured, Indicated, and Inferred Categories<\/h2>
The Big Springs project currently holds a JORC 2012 Mineral Resource Estimate of 15.49 million tonnes at 2.0 grams per tonne gold, equating to 1.01 million ounces of contained gold. The resource is divided into three categories: Measured resources of 0.86 million tonnes at 4.7g/t Au for 0.13 million ounces; Indicated resources of 6.00 million tonnes at 2.2g/t Au for 0.43 million ounces; and Inferred resources of 8.63 million tonnes at 1.7g/t Au for 0.46 million ounces.<\/p>
The presence of a Measured resource— the highest confidence category under the JORC Code— at a grade of 4.7g/t Au is a significant aspect, indicating a core of well-defined, higher-grade mineralisation drilled to a density that supports strong geological confidence. Sentinel believes there is strong potential to expand the resource through targeted drilling of known high-grade extensions that remain open at depth and have not been extensively tested with modern drilling methods.<\/p>
Strategic Location on Nevada’s Independence Trend Next to First Majestic’s Jerritt Canyon Complex<\/h2>
Big Springs is located within the Independence Trend in Elko County, northeast Nevada, a geological corridor known as one of the world’s most productive gold regions. The project lies directly north of the Jerritt Canyon mine complex, owned by First Majestic Silver Corp (NYSE/TSX: AG), and about 70 kilometres northeast of the Carlin Trend, which reportedly contains over 88 million ounces of historical gold endowment.<\/p>
This proximity to Jerritt Canyon is strategically important. First Majestic placed Jerritt Canyon on temporary care and maintenance in March 2023 but aims to restart roaster operations and gold production in the second half of 2027. The company update notes three roasters operate in the region, including the Jerritt Canyon Facility, which Sentinel identified as a potential near-term processing option for Big Springs ore if production proceeds. This nearby infrastructure could significantly reduce the Capital requirements of any future development.<\/p>
Proven Mining History with 386,000 Ounces Produced from Seven Open Pits<\/h2>
Big Springs is not a greenfield project. Historical mining between 1987 and 1993 produced around 386,000 ounces of gold from seven open pits, demonstrating proven extraction from the deposit. This historical production, although over 30 years old, provides valuable context on the project’s mining credentials and mineralisation quality.<\/p>
The project also benefits from existing mine infrastructure and a Mining Lease approved in 2017, which remains current. The lease permits both surface and underground mining and is supported by existing mine designs and historical development studies from prior operators. Sentinel noted that an Expanded Plan of Operations was previously submitted by Warriedar Resources— from whom Capricorn Metals acquired Big Springs in its 2025 acquisition— indicating prior active development planning.<\/p>
High-Grade Underground Ore Shoots Open at Depth with Historical Intercepts Exceeding 30g/t Au<\/h2>
A key near-term catalyst at Big Springs is the presence of high-grade underground ore shoot extensions that remain open at depth and have not been fully tested by modern drilling. Historical drill intercepts include 17.7 metres at 26.8g/t Au (hole QW03-26C), 17.7 metres at 33.4g/t Au (hole SCC-1483), and 32.0 metres at 11.8g/t Au (hole SC-1485). These grades far exceed the resource average of 2.0g/t Au and indicate potential for underground mining.<\/p>
Sentinel has identified drill-ready targets within the Mining Lease and plans an initial 10,000-metre drill program to test these extensions. Successfully expanding these high-grade shoots could significantly grow the resource and improve the project’s economics. Investors will likely watch closely for the timing and results of this drilling as a key near-term value driver following acquisition completion.<\/p>
District-Scale Exploration Potential Over 93km² of Largely Untested Carlin-Style Gold Terrain<\/h2>
Beyond the current resource and high-grade shoots, Sentinel highlights the broader 93 square kilometre landholding as a major source of long-term exploration upside. The tenure covers highly prospective Carlin-style gold ground— the geological style responsible for Nevada’s exceptional historical gold production, including the Carlin Trend’s 88+ million ounce resource.<\/p>
This area remains largely underexplored despite its proximity to the Jerritt Canyon system and Carlin-style mineralised trends. Managing Director Matt Herbert noted the potential for additional discoveries similar to major Nevada gold systems as a key long-term value driver. No specific exploration targets or timelines for district-wide drilling were disclosed, but the landholding’s scale suggests significant blue-sky potential.<\/p>
Columbia Gold-Silver Project Drilling Progresses with First Assays Expected Within Six Weeks<\/h2>
The Big Springs acquisition does not shift focus away from Sentinel’s flagship Columbia Gold-Silver Project in Montana. The company confirmed that the maiden drilling program at Columbia continues as planned, with first assay results expected in about six weeks. Columbia currently hosts a Mineral Resource Estimate of 920,000 ounces of gold and 3.1 million ounces of silver.<\/p>
Managing Director Matt Herbert described Big Springs as complementary to Columbia, where drilling targets resource extensions and new discoveries. Sentinel is managing both projects concurrently: Columbia advancing through active drilling while Big Springs adds scale and near-term development optionality. Managing capital and personnel across two Tier-1 US jurisdictions will be a key operational and financial challenge, with investors watching closely.<\/p>
Big Springs Acquisition Aligns with Sentinel’s Strategic Focus on North American Gold Development<\/h2>
Sentinel positioned the Big Springs acquisition as fully aligned with its strategy as a North American gold company focused on advanced exploration assets in top-tier jurisdictions. Both Columbia in Montana and Big Springs in Nevada are located in US states with established mining regulatory frameworks and strong institutional investor familiarity, enhancing Sentinel’s appeal to North American and global investors.<\/p>
The deal also reflects Capricorn Metals’ strategic divestment of a non-core Nevada asset to a dedicated North American-focused explorer-developer. Big Springs was part of the portfolio Capricorn acquired through its 2025 acquisition of Warriedar Resources. For Capricorn, an established Australian gold producer, divesting Big Springs aligns with portfolio rationalisation. For Sentinel, acquiring a 1.01Moz permitted project with historical production, existing mine studies, and nearby processing infrastructure accelerates its growth strategy.<\/p>
Transaction Terms and Completion Details Remain Undisclosed<\/h2>
Although Sentinel confirmed the binding agreement to acquire Big Springs from Capricorn Metals, the financial terms—including purchase price, consideration structure, and contingent payments—were not revealed. Investors seeking clarity on the transaction’s impact on Sentinel’s Balance Sheet will need to await further company disclosures.<\/p>
Similarly, conditions precedent to completion, expected timing, and regulatory approvals required were not detailed. Key upcoming milestones include acquisition completion, Columbia maiden drill results expected in about six weeks, and commencement of the planned ~10,000-metre Big Springs drill program. The immediate share price impact was not evident from public information.<\/p>
Combined ~2.0Moz Gold Resource Positions Sentinel Among Leading ASX Gold Developers<\/h2>
Combining Big Springs and Columbia creates a gold resource base of approximately 2.0 million ounces, distinguishing Sentinel from earlier-stage single-asset gold explorers on the ASX. Typically, companies with resources of this scale—especially across permitted or actively developing projects—begin attracting institutional interest and development capital from a broader investor base.<\/p>
Sentinel is strategically positioning itself at this threshold, explicitly aiming to attract a wider range of North American and global institutional investors. The success of this strategy will depend heavily on forthcoming drill results at both projects and the company’s ability to demonstrate a credible path to production—factors expected to become clearer in the coming months as technical data emerges.<\/p>
Big Springs Acquisition Elevates Sentinel Metals to a ~2.0Moz North American Gold Developer<\/h2>
On 2 July 2026, Sentinel Metals announced it had executed a binding agreement to acquire the Big Springs Gold Project in northeast Nevada from Capricorn Metals Limited. The company described this transaction as transformational, combining Big Springs’ 1.01Moz gold resource with Sentinel’s Columbia Gold-Silver Project in Montana, which holds a Mineral Resource Estimate of 920,000 ounces of gold and 3.1 million ounces of silver. Together, these projects provide a combined resource base of about 2.0 million ounces of gold across two Tier-1 US mining jurisdictions.<\/p>
Sentinel stated that the acquisition enhances its scale, project pipeline, and strategic flexibility, positioning it to attract a wider array of North American and global institutional investors. Managing Director Matt Herbert highlighted Big Springs as a large-scale, advanced gold asset in a Tier-1 Jurisdiction with potential near-term production options and a strong pipeline of exploration and development opportunities. The company did not disclose the acquisition consideration.<\/p>
Big Springs’ JORC 2012 Mineral Resource Estimate: 1.01Moz Across Measured, Indicated, and Inferred Categories<\/h2>
The Big Springs project currently holds a JORC 2012 Mineral Resource Estimate of 15.49 million tonnes at 2.0 grams per tonne gold, equating to 1.01 million ounces of contained gold. The resource is divided into three categories: Measured resources of 0.86 million tonnes at 4.7g/t Au for 0.13 million ounces; Indicated resources of 6.00 million tonnes at 2.2g/t Au for 0.43 million ounces; and Inferred resources of 8.63 million tonnes at 1.7g/t Au for 0.46 million ounces.<\/p>
The presence of a Measured resource— the highest confidence category under the JORC Code— at a grade of 4.7g/t Au is a significant aspect, indicating a core of well-defined, higher-grade mineralisation drilled to a density that supports strong geological confidence. Sentinel believes there is strong potential to expand the resource through targeted drilling of known high-grade extensions that remain open at depth and have not been extensively tested with modern drilling methods.<\/p>
Strategic Location on Nevada’s Independence Trend Next to First Majestic’s Jerritt Canyon Complex<\/h2>
Big Springs is located within the Independence Trend in Elko County, northeast Nevada, a geological corridor known as one of the world’s most productive gold regions. The project lies directly north of the Jerritt Canyon mine complex, owned by First Majestic Silver Corp (NYSE/TSX: AG), and about 70 kilometres northeast of the Carlin Trend, which reportedly contains over 88 million ounces of historical gold endowment.<\/p>
This proximity to Jerritt Canyon is strategically important. First Majestic placed Jerritt Canyon on temporary care and maintenance in March 2023 but aims to restart roaster operations and gold production in the second half of 2027. The company update notes three roasters operate in the region, including the Jerritt Canyon Facility, which Sentinel identified as a potential near-term processing option for Big Springs ore if production proceeds. This nearby infrastructure could significantly reduce the Capital requirements of any future development.<\/p>
Proven Mining History with 386,000 Ounces Produced from Seven Open Pits<\/h2>
Big Springs is not a greenfield project. Historical mining between 1987 and 1993 produced around 386,000 ounces of gold from seven open pits, demonstrating proven extraction from the deposit. This historical production, although over 30 years old, provides valuable context on the project’s mining credentials and mineralisation quality.<\/p>
The project also benefits from existing mine infrastructure and a Mining Lease approved in 2017, which remains current. The lease permits both surface and underground mining and is supported by existing mine designs and historical development studies from prior operators. Sentinel noted that an Expanded Plan of Operations was previously submitted by Warriedar Resources— from whom Capricorn Metals acquired Big Springs in its 2025 acquisition— indicating prior active development planning.<\/p>
High-Grade Underground Ore Shoots Open at Depth with Historical Intercepts Exceeding 30g/t Au<\/h2>
A key near-term catalyst at Big Springs is the presence of high-grade underground ore shoot extensions that remain open at depth and have not been fully tested by modern drilling. Historical drill intercepts include 17.7 metres at 26.8g/t Au (hole QW03-26C), 17.7 metres at 33.4g/t Au (hole SCC-1483), and 32.0 metres at 11.8g/t Au (hole SC-1485). These grades far exceed the resource average of 2.0g/t Au and indicate potential for underground mining.<\/p>
Sentinel has identified drill-ready targets within the Mining Lease and plans an initial 10,000-metre drill program to test these extensions. Successfully expanding these high-grade shoots could significantly grow the resource and improve the project’s economics. Investors will likely watch closely for the timing and results of this drilling as a key near-term value driver following acquisition completion.<\/p>
District-Scale Exploration Potential Over 93km² of Largely Untested Carlin-Style Gold Terrain<\/h2>
Beyond the current resource and high-grade shoots, Sentinel highlights the broader 93 square kilometre landholding as a major source of long-term exploration upside. The tenure covers highly prospective Carlin-style gold ground— the geological style responsible for Nevada’s exceptional historical gold production, including the Carlin Trend’s 88+ million ounce resource.<\/p>
This area remains largely underexplored despite its proximity to the Jerritt Canyon system and Carlin-style mineralised trends. Managing Director Matt Herbert noted the potential for additional discoveries similar to major Nevada gold systems as a key long-term value driver. No specific exploration targets or timelines for district-wide drilling were disclosed, but the landholding’s scale suggests significant blue-sky potential.<\/p>
Columbia Gold-Silver Project Drilling Progresses with First Assays Expected Within Six Weeks<\/h2>
The Big Springs acquisition does not shift focus away from Sentinel’s flagship Columbia Gold-Silver Project in Montana. The company confirmed that the maiden drilling program at Columbia continues as planned, with first assay results expected in about six weeks. Columbia currently hosts a Mineral Resource Estimate of 920,000 ounces of gold and 3.1 million ounces of silver.<\/p>
Managing Director Matt Herbert described Big Springs as complementary to Columbia, where drilling targets resource extensions and new discoveries. Sentinel is managing both projects concurrently: Columbia advancing through active drilling while Big Springs adds scale and near-term development optionality. Managing capital and personnel across two Tier-1 US jurisdictions will be a key operational and financial challenge, with investors watching closely.<\/p>
Big Springs Acquisition Aligns with Sentinel’s Strategic Focus on North American Gold Development<\/h2>
Sentinel positioned the Big Springs acquisition as fully aligned with its strategy as a North American gold company focused on advanced exploration assets in top-tier jurisdictions. Both Columbia in Montana and Big Springs in Nevada are located in US states with established mining regulatory frameworks and strong institutional investor familiarity, enhancing Sentinel’s appeal to North American and global investors.<\/p>
The deal also reflects Capricorn Metals’ strategic divestment of a non-core Nevada asset to a dedicated North American-focused explorer-developer. Big Springs was part of the portfolio Capricorn acquired through its 2025 acquisition of Warriedar Resources. For Capricorn, an established Australian gold producer, divesting Big Springs aligns with portfolio rationalisation. For Sentinel, acquiring a 1.01Moz permitted project with historical production, existing mine studies, and nearby processing infrastructure accelerates its growth strategy.<\/p>
Transaction Terms and Completion Details Remain Undisclosed<\/h2>
Although Sentinel confirmed the binding agreement to acquire Big Springs from Capricorn Metals, the financial terms—including purchase price, consideration structure, and contingent payments—were not revealed. Investors seeking clarity on the transaction’s impact on Sentinel’s Balance Sheet will need to await further company disclosures.<\/p>
Similarly, conditions precedent to completion, expected timing, and regulatory approvals required were not detailed. Key upcoming milestones include acquisition completion, Columbia maiden drill results expected in about six weeks, and commencement of the planned ~10,000-metre Big Springs drill program. The immediate share price impact was not evident from public information.<\/p>
Combined ~2.0Moz Gold Resource Positions Sentinel Among Leading ASX Gold Developers<\/h2>
Combining Big Springs and Columbia creates a gold resource base of approximately 2.0 million ounces, distinguishing Sentinel from earlier-stage single-asset gold explorers on the ASX. Typically, companies with resources of this scale—especially across permitted or actively developing projects—begin attracting institutional interest and development capital from a broader investor base.<\/p>
Sentinel is strategically positioning itself at this threshold, explicitly aiming to attract a wider range of North American and global institutional investors. The success of this strategy will depend heavily on forthcoming drill results at both projects and the company’s ability to demonstrate a credible path to production—factors expected to become clearer in the coming months as technical data emerges.<\/p>
