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Brightstar Resources Limited (ASX:BTR) (Brightstar) is pleased to announce that the company’s resource base has exceeded 1 million ounces of gold with a significant upgrade to the Cork Tree Well deposit, located 30km north of Laverton in WA’s Goldfields region.
HIGHLIGHTS
- JORC 2012 Mineral Resource Estimate increased by 20% to 303koz at Cork Tree Well to deliver a combined JORC Resource base of 1.02Moz Au from Laverton & Menzies Gold Projects
- Importantly, the Mineral Resource upgrade represents a 65% increase to the Indicated ounces to 157koz @ 1.6g/t Au
- Two ~6,000m drill programs completed in late 2022 and Q1 20231 delivered the uplift in tonnages and ounces at a discovery cost of <A$30/oz
- Updated Cork Tree Well Mineral Resource Estimate completed by independent consultant ABGM Pty Ltd will feed into mining scoping studies underway
- The Mineral Resource Estimate has also highlighted that the model grade improves at depth and has confirmed the presence of a high-grade plunging shoot within the Cork Tree Well orebody
- This high-grade plunging shoot will continue to be drill tested in the upcoming RC drilling program, targeting depth extensions to the following best intersections within that zone:
- 10m @ 4.5g/t Au from 192m (BTRRC184)
- 22m @ 2.84g/t Au from 127m (BTRRC031)
- 26m @ 2.31g/t Au from 137m (BTRRC026)
- 29m @ 3.1g/t Au from 141m (SDR103602)
With over 11,000 metres of new drilling completed in late 2022 and early 2023 (refer Figure 2), the infill and extensional programs achieved the aim of identifying new mineralisation outside the previous JORC 2012 Mineral Resource Estimate and increasing confidence in the resource model. This is clearly shown by the Indicated material now accounting for over 50% of the Cork Tree Well Resource to provide a more robust base for mining scoping studies.
Brightstar’s Managing Director, Alex Rovira, commented“We are delighted to see the Cork Tree Well resource grow by over 20%, and more importantly grow our indicated component by 65% to over 3 million tonnes for over 157,000 ounces of gold.
Additionally, the updated Mineral Resource Estimate model has confirmed the presence of a number of higher grade plunging shoots that are open at depth and will be drill tested in upcoming campaigns.
These upgrades have seen Brightstar now control a +1 million ounce resource base with tangible growth shown in just one of our many resources at the Laverton and Menzies Gold Projects. We look forward to updating the market with further news on our drilling at our projects and our scoping study which are both presently underway”.
The updated mineral resource estimate is currently being used for exploration planning purposes in order to target areas that are open down plunge and to ensure sufficient drill density in zones currently classified as Inferred mineralisation to continue to grow the Indicated component of the MRE.
As shown in Tables 1 & 2, Brightstar’s resource at Cork Tree Well has expanded from 252koz to 303koz in less than twelve months, with indicated material increasing by over 1Mt or 62koz driven largely by the targeted resource drilling completed by Brightstar in 2022 and Q1 2023 with inferred material dropping slightly representing a positive conversion of inferred to indicated material which now represents over 50% of in-ground ounces.
Figure 1 – Cork Tree Well Long Section
Figure 2 - Recently completed RC Drilling at Cork Tree Well (2022 & 2023 programs)
Table 1 - Cork Tree Well Model variances
Table 2 - Global Resource Table Summary (June 2023)
ABGM Pty Ltd (ABGM), were engaged by Brightstar to undertake an update for the Mineral Resource Estimate for the Cork Tree Well Gold Deposit following completion of recent drill programs. The following text is a summary of their report issued to Brightstar.
Project Location
The Cork Tree Well Gold Deposit is on Brightstar’s wholly owned tenement M38/346, located 30 km north of Laverton. Access from Laverton is via the Great Central Road for 11km to the Bandya Road turn-off then 23km north on the Bandya Road.
Regional Geology
The Cork Tree Well gold deposit is located in the north Laverton Greenstone Belt on the southern extremity of the Duketon Greenstone Belt (DGB) in the north-eastern sector of the Eastern Goldfields Superterrane of the Yilgarn Craton. Abundant gold mineralisation in the Eastern Goldfields Superterrane has been attributed to the craton wide structural-metamorphic events that took place in the complex protracted structural evolution of the craton, between 2667Ma and 2615Ma.
The Laverton Greenstone Belt has the largest known gold endowment In the Eastern Goldfields Superterrane after the Kalgoorlie region. A narrow approximately 5km wide belt of attenuated north-south trending greenstone links the Duketon and Laverton belts.
The DGB is characterised by a deeply weathered, metamorphosed succession of Archaean mafic, ultramafic, and felsic volcanic rocks with associated volcanogenic sedimentary rocks and thin units of banded chert and banded iron formation. Late-stage high level acid to intermediate sills and dykes and associated small plutons intrude the sequence.
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This article includes content from Brightstar Resources, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
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Brightstar Resources
Investor Insight
A gold-focused emerging gold producer with a clear pathway to production growth, Brightstar Resources presents a compelling investment case driven by its mining and development hubs strategy and a district-scale resource opportunity.
Overview
The price of gold stays strong. In April 2024, the yellow metal’s price passed US$2,400 per ounce for the first time. The reason is multifaceted. The world teeters on the brink of a severe recession while some markets attribute the increase to safe haven rush. Amidst ballooning interest rates, bank failures and falling bond yields, demand for gold continues to rise. At this precise moment, gold is simultaneously an excellent portfolio diversifier and a compelling hedge against ongoing inflation — particularly if one invests in the right company.
Brightstar Resources (ASX:BTR) aims to be that company. An emerging mining and development company, Brightstar occupies a strategic land position of roughly 1,200 square kilometers in the Sandstone Greenstone Belt, 300 square kilometers in the Laverton Tectonic Belt and 80 square kilometers of the Menzies Shear Zone.
The company also owns an existing processing facility that can potentially provide tremendous shareholder value in a low-capital cost restart scenario.
That plant, once fully refurbished and operational, could prove a key differentiator for the company, enabling fast gold production at a low capital cost. This is especially noteworthy given that many other gold companies trading on the ASX are largely focused on greenfield exploration and development. Even once those companies discover a promising resource, mining and processing facilities would still need to be built, undertakings which can incur significant upfront capital costs and take several years.
Brightstar's Laverton gold assets are all centered on a 100 percent-owned 300-square-kilometer tenure in the Laverton Tectonic Zone and all within 70 kilometers of the Laverton Processing Plant. Additionally, all resources within this zone are open along strike and at depth. Only minor drilling programs have been conducted in recent years, paving the way for significant exploration upside with the potential for further regional and greenfields discoveries.
Brightstar also owns 100 percent of the Menzies Gold Project, a contiguous land package of granted mining leases over a strike length of roughly 20 kilometers along the Menzies Shear Zone and adjacent to the Goldfields Highway.
In 2023 and 2024, the company announced a mineral resource upgrade to the Cork Tree Well deposit (Laverton gold project) and also delivered two maiden mineral resource estimates at the Link Zone and Aspacia deposits (Menzies gold project). This has grown the total group MRE by approximately 150 koz gold through organic exploration.
The company has also acquired 100 percent of the shares and options of Linden Gold Alliance, a gold producer, developer and explorer with existing mineral resources of 350 koz @ 2.1 g/t gold near Brightstar in the Laverton district. Brightstar’s MRE has reached 1.1 Moz gold across the Menzies and Laverton projects, with an additional 0.35 Moz gold in resources added after the successful acquisition of Linden Gold Alliance.
In August 2024, Brightstar entered into a scheme implementation deed to acquire 100 percent of Alto Metals (ASX:AME), which owns the Sandstone gold project located in East Murchison. The project has a current mineral resource of 1.05 Moz of gold at 1.5 g/t.
Brightstar also completed the acquisition of the gold rights at the Montague East gold project (MEGP) from Gateway Mining Limited (ASX:GML). The project is located 70 km from the Sandstone gold project. The acquisition adds a further 9.6 Mt @ 1.6 g/t gold for 0.5 Moz gold to Brightstar’s JORC Mineral Resource Estimate, giving the company a total mineral endowment of 38.3 Mt @ 1.6 g/t gold for 2.0 Moz gold.
The acquisition of the MGEP from Gateway Mining and 100 percent of Alto’s shares creates a third district-scale resource base for the company called the Sandstone Hub. Upon consolidation of the Laverton, Menzies and Sandstone hubs, Brightstar’s mineral resources would reach 3 Moz at 1.5g/t gold.
Subsequent to the deal with Alto Metals, Brightstar entered into a $4 million drill-for-equity agreement with Topdrill to aggressively advance the consolidated Sandstone gold project. The deal strengthens Brightstar's financial capacity to fulfill its multi-hub exploration and development strategy, which includes the Menzies, Laverton and Sandstone hubs.
Company Highlights
- Brightstar Resources is an ASX-listed mining and development company with more than 3 million ounces of gold resources and an on-site processing infrastructure across its project locations in Laverton, Menzies and Sandstone in Western Australia.
- Brightstar's mineral assets are situated across roughly 300 square kilometers of 100-percent-owned land in the Laverton Tectonic Zone and ~80 square kilometers in the high-grade Menzies Shear Zone.
- The Laverton Gold project has a mineral resource of 9.7 Mt @ 1.6 g/t gold for 511 koz gold and the Menzies gold project has 13.8 Mt @ 1.3g/t gold for 595 koz gold.
- In 2023, the company completed a scoping study into the development of its Menzies and Laverton gold projects and the refurbishment and restart of its processing plant in Laverton.
- In 2023 and 2024, Brightstar completed a small-scale mining joint venture with BML Ventures which involved a 50/50 profit-sharing agreement to exploit the Selkirk deposit at Menzies. In April 2024, Brightstar announced that this joint venture delivered a net profit to Brightstar of $6.5 million.
- In June 2024, the company successfully acquired all of the issued ordinary shares and options in Linden Gold Alliance, a gold producer, developer and explorer with existing mineral resources of 350 koz @ 2.1 g/t gold near Brightstar in the Laverton district.
- As part of the merger with Linden Gold, Brightstar released a scoping study into Linden’s development-ready Jasper Hills gold project, which delivered key metrics including:
- 140 koz mined over 3.75 years (35 koz pa)
- Net present value of AU$99 million
- Internal rate of return of 736 percent
- Pre-production capital requirements of $12 million
- All-in sustaining costs of AU$1,972/oz
- Jasper Hills is located just 50 km SE of Brightstar’s processing plant in the Laverton gold project
- Brightstar has recently completed the acquisition of the gold rights at the Montague East gold project (MEGP) from Gateway Mining Limited (ASX:GML), and has entered into an agreement to acquire Alto Metals (ASX:AME) further creating the company’s third district-scale resource base known as the Sandstone Hub.
- Brightstar plans to continue generating shareholder value through a combination of development and strategic acquisitions along with some exploration.
Key Projects
Laverton Hub
Brightstar’s Laverton hub is comprised of the Cork Tree Well, Beta and Alpha project areas with the addition of the Second Fortune gold mine and the Jasper Hills projects.
Highlights:
- Cork Tree Well, Alpha and Beta have current total JORC mineral resource estimate of 9.7 Mt @ 1.6 g/t gold for 511 koz (52 percent measured and indicated category). All mineral resources are on granted mining leases
- Cork Tree Well (6.4 Mt at 1.4 g/t gold for 303 koz gold)
- Alpha (1.4 Mt at 2.3 g/t gold for 106 koz gold)
- Beta (1.9 Mt at 1.7 g/t gold for 102 koz gold)
- Main project area Cork Tree Well is open at depth and along strike with recent drilling results of 34.4 meters at 7.94 g/t gold from 43.5 meters (CTWMET004) and 27.6 meters at 17.8 g/t gold from 51 m (CTWMET003)
- Second Fortune has a mineral resource estimate head grade of ~11g/t gold with an average ore body width of ~0.6 meters.
- Jasper Hills is located 50 km from Brightstar’s existing processing facility along a wholly-owned private haul road, allowing unimpeded, direct access to both projects
- Permitted, previously mined and production-ready
- Last mined by current owners in 2020 with 23,000 oz gold mined
- Scoping Study outcomes include:
- Pre-production capex of $12 million required (maximum capital drawdown)
- Open pit mine at Lord Byron and underground mine at Fish
- Production of 141 koz over four years (35 koz per annum)
- LOM EBITDA of $135 million (@ AU$3,000/oz)
Menzies Hub
The Menzies Hub comprises a tenement holding of a contiguous land package of granted mining leases over a strike length of more than 20 km. The majority of deposits hosted along the Menzies Shear Zone are located adjacent to Goldfields Highway in Menzies (130km north of Kalgoorlie).
Highlights:
- Total Current Resource: 13.7 Mt at 1.3 g/t gold for 595 koz gold (36 percent measured and indicated)
- September 2023 scoping study showed the simultaneous development of open pit mining at Lady Shenton system and underground mining at Yunndaga:
- 1.9 Mt @ 1.63 g/t Au (100 koz) in open pit mining at Lady Shenton
- 650 kt @ 2.91 g/t (60 koz) in underground mining at Yunndaga
- Low capex of $22 million
- Significant opportunities to find virgin discoveries and brownfields mineral resource growth:
Sandstone Hub
The consolidated Sandstone project is over 100 km from existing third-party milling operations in the Murchison. This third processing hub boasts Alto’s Sandstone project with a mineral resource of 1.05 Moz at 1.4 g/t gold and Gateway’s Montague gold project with a mineral resource of 0.5 Moz @ 1.6 g/t gold.
Brightstar aims to fast-track the development timetable through:
- A focused, multi-rig infill drill out to take the inferred mineralisation into measured and indicated status to underpin mining studies and project advancement
- The application of Brightstar’s dedicated in-house geological and mining engineering team to retain crucial project IP and fast-tracked mining studies;
Brightstar Processing Facility
Situated close to Brightstar's existing mineral assets at Laverton, the Brightstar Processing Plant provides the company with a considerable operational head start over its peers.
Highlights:
- Extensive Infrastructure: Current facilities at the plant include two ball mills, a power station and gravity and elution circuits. Other infrastructure includes:
- A tailings storage dam
- An on-site process water pond
- A 60-person accommodation camp
- An airstrip at the Cork Tree Well Project
- Vehicles and equipment include a forklift, bobcat, two loaders, multiple light vehicles and a 30-tonne crane.
- A Leg Up Over Competitors: The presence of pre-existing processing infrastructure represents significant time savings compared to greenfields development. Brightstar had an independent valuation completed which valued the processing plant at AU$60 million in replacement value.
- Low Upfront Capital Cost: As part of the scoping study released in September 2023, GR Engineering estimated a capital cost requirement to refurbish and expand the milling capacity would cost just AU$18.5 million.
- Close to Existing Assets: Brightstar's major development projects — Cork Tree Well, Jasper Hills, Beta and Alpha — are all close to the plant.
Gold doré bars (BTR005 – BTR016) poured on 9 March 2024
Management Team
Alex Rovira - Managing Director
Alex Rovira is a qualified geologist and an experienced investment banker having focused on the metals and mining sector since 2013. Rovira has experience in ASX equity capital markets activities, including capital raisings, IPOs and merger and acquisitions.
Richard Crookes - Non-executive Chairman
Richard Crookes has over 35 years’ experience in the resources and investments industries. He is a geologist by training having previously worked as the chief geologist and mining manager of Ernest Henry Mining in Australia.
Crookes is managing partner of Lionhead Resources, a critical minerals investment fund and formerly an investment director at EMR Capital. Prior to that he was an executive director in Macquarie Bank’s Metals Energy Capital (MEC) division where he managed all aspects of the bank’s principal investments in mining and metals companies.
Andrew Rich - Executive Director
Andrew Rich is a degree qualified mining engineer from the WA School of Mines and has obtained a WA First Class Mine Managers Certificate. Rich has a strong background in underground gold mining with experience predominantly in the development of underground mines at Ramelius Resources (ASX:RMS) and Westgold Resources (ASX:WGX).
Ashley Fraser - Non-executive Director
Ashley Fraser is an accomplished mining professional with over 30 years experience across gold and bulk commodities. Fraser was a founder of Orionstone (which merged with Emeco in a $660-million consolidation) and is a founder/owner of Blue Cap Mining and Blue Cap Equities.
Jonathan Downes - Non-executive Director
Jonathan Downes has over 30 years’ experience in the minerals industry and has worked in various geological and corporate capacities. Experienced with gold and base metals, he has been intimately involved with the exploration process through to production. Downes is currently the managing director of Kaiser Reef, a high grade gold producer, and non-executive director of Cazaly Resources.
Matthew Bowles – Non-executive Director
Matthew Bowles is a senior corporate finance executive with extensive public corporate advisory, private equity and capital markets experience in the resources sector. Bowles has successfully negotiated domestic and cross border corporate funding, joint venture and M&A transactions for a number of ASX listed companies in Africa, the Americas and Australia. He was previously chief development officer for a West African focused ASX listed company. He commenced his career with Rio Tinto, working in corporate and commercial roles for nine years, before moving to London to work in banking and finance. Since his return to Australia, Bowles has held senior roles with global advisory firms, focusing on the resources sector. Bowles holds a Bachelor of Business, is a member of CPA Australia and a Fellow of the Financial Services Institute of Australia.
Dean Vallve – Chief Operating Officer
Dean Vallve holds technical qualifications in geology & mining engineering from the WA School of Mines, an MBA, and a WA First Class Mine Managers Certificate. Vallve was previously in senior mining and study roles at ASX listed mid-cap resources companies Hot Chili (ASX:HCH) and Calidus Resources (ASX:CAI).
High grade Assay Results Continue at Youanmi
- The latest batch of assays have been received from the 11,000m drilling program (both diamond core and reverse circulation) at the high gold-grade Youanmi Gold Project, located centrally in Western Australia’s prolific gold fields
- The recently-completed infill/exploration program aimed to improve resource confidence and open up corridors for resource growth; to underpin the Definitive Feasibility Study (DFS), and, additionally, provide sample material for ongoing metallurgical optimisation test-work for the DFS program
- Latest highlights from the program include:
- RXDD131: 4.38m @ 19.07 g/t Au from 387.98m,
- incl. 1.73m @ 41.43 g/t Au from 389.96m
- RXDD119: 4.56m @ 14.60 g/t Au from 220.64m
- RXDD115: 2.99m @ 21.11 g/t Au from 249.88m
- RXDD119: 4.0m @ 7.37 g/t Au from 162.0m
- RXDD132: 7.19m @ 3.90 g/t Au from 263.61m
- RXDD133: 2.83m @ 6.53 g/t Au from 431.00m
- RXDD128: 3.82m @ 4.51 g/t Au from 364.59m,
- incl. 1.73m @ 8.22 g/t Au from 364.59m
- incl. 1.73m @ 8.22 g/t Au from 364.59m
- RXDD122: 0.95m @ 13.50 g/t Au from 204.44m
- §These results further demonstrate the continuity of high- grade gold mineralisation along the Youanmi greenstone belt belt, and the potential for resource growth both at depth and along-strike, with discovery potential to the south
- 35,000m Step-up drill campaign well underway with the plan to bring forward ounces and increase the mine plan
The program focused on converting Inferred stopes at Pollard, United North and Youanmi Main to higher confidence Indicated classification and providing material for metallurgical testing for the upcoming Definitive Feasibility Study (DFS) – on track for H2 CY25.
This final consignment of diamond assay results are the fourth batch of assays results returned from the drill program and have been entirely drilled from the Pollard, Youanmi and United North areas (Figure 1).
Rox Resources’ Chief Executive Officer, Phillip Wilding, commented:
“It’s pleasing to round out the 11,000m RD and DD drilling program with another batch of excellent intercepts.
“More importantly, the program has significantly improved our knowledge of the high grade and underexplored Youanmi ore system, and shown that mineralisation remains open at depth.
“Next steps are to convert Inferred areas of the Resource to the higher confidence Indicated classification, and finalise key intercepts of sample material for metallurgical test work to feed into the Youanmi DFS.
“We are excited to have commenced the 35,000m Step-up program to potentially bring forward ounces in the mine plan and significantly increase the size of the Pollard ore zone.”
Youanmi Major Growth Drill program
Resource drilling has focused on converting selected Inferred stopes in the current Mineral Resource of 16.2Mt at 4.4g/t Au for 2.3Moz (Indicated: 10.7Mt at 4.5g/t Au for 1.6 Moz : Inferred 5.5Mt at 4.2g/t Au for 0.7 Moz) 1 to higher confidence Indicated classification at Pollard, United North and Youanmi Main as shown in plan on Figure 1. The drilling has also provided both sample material for metallurgical testing and valuable geological data for the pending Definitive Feasibility Study (“DFS”) planned for second half of 2025.
Figure 1: Plan view of the Youanmi Gold Project featuring drill hole collar locations and 2024 Resource outline overprinted on aerial photography
Outside of the immediate resource area, drilling was also conducted on near-mine exploration and focused on the Youanmi South prospect area, or Paddy’s Lode, first reporting high-grade intercepts in 20232. The drilling at Paddy’s has complimented the Company’s exploration strategy moving south along the Main Lode Shear Zone (MLSZ) and adding additional gold ounces to the Resource. Youanmi South has the potential to grow the Resource above the 103kozpa Production Target outlined in the recently completed Pre-Feasibility Study (“PFS”)3.
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This article includes content from Rox Resources Limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
Drilling Commenced at Viani in Fiji
HIGHLIGHTS
- The Phase 1, three-hole diamond drilling program has commenced at the Viani Project, Fiji and will test for extensions to the quartz vein gold mineralisation at depth.
- Phase 1 is expected to be completed in early 2025, with plans for additional drilling under the same program dependent on the initial results
- The Viani Project (SPL1513) covers an area of approximately 200km2 and is largely underexplored.
- At the Dakuniba prospect within Viani, low sulphidation epithermal high-grade gold mineralisation has been mapped over >3km strike length.
- Diamond drilling completed by Japan International Cooperation Agency (JICA) in 1995 to 1997 intersected high-grade gold in low sulphidation epithermal quartz veins, including 0.6m @ 27.6 g/t Au.
Alice Queen’s Managing Director, Andrew Buxton said,
With drilling underway, Alice Queen is positioned to test the epithermal gold-style mineralisation identified in historic drilling at the Viani Project. Weather permitting, we anticipate completing the Phase 1, three-hole diamond drilling program in early 2025. Following this, our exploration team will mobilise the drill rig to the Sabeto Project in Fiji to maintain the momentum of this campaign. To deliver timely results to shareholders, we intend to accelerate the analysis of the drill core at ALS Brisbane.”
Image 1 – Diamond drilling at Viani
Details
Geology
The geology of the Viani Project (SPL 1513) comprises olivine basalts and volcaniclastics of the Natewa Volcanic Group which are intruded by andesite sills and dykes. In the 1940s, gold mineralisation was found by local prospectors near the village of Dakuniba. At Dakuniba, low sulphidation style epithermal gold occurs in quartz veins, and silicified rocks along a 3km long NE trending zone.
In 1995-1997, Japan International Cooperation Agency (JICA) drilled six diamond holes at Dakuniba and intersected high-grade gold in chalcedonic, crustiform, colloform banded quartz veins at depths of 50m to 100m below surface (i.e. MJVFV-5 intersected 2.2m @ 11.3 g/t Au, incl 0.6m @ 27.6 g/t Au at 121m downhole). This high-grade gold mineralisation is open in all directions.
Proposed Drill program
The initial Phase 1 drill program at Viani (see Table 1) will comprise three diamond drillholes designed to test continuity to the epithermal gold mineralisation previously intersected in JICA drillhole MJVFV- 5 (2.2m @ 11.3 g/t Au) (see Figure 2). The drilling will test for extensions to the gold mineralisation at depth and along strike.
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This article includes content from Alice Queen Limited, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
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