Javelin Minerals to Initiate Deep Diamond Drilling at Coogee Gold-Copper Project with WA Government EIS Funding

Coogee Project Location and Mineral Resource in Western Australia

Javelin Minerals operates the Coogee Gold Project under a granted Mining Lease in Western Australia, situated within one of Australia's most prolific gold mining regions. The project is located in a district with proven gold endowment, supported by nearby producing deposits and the company's existing mineral resource estimate. Recent strategic tenement acquisitions have expanded the exploration area to more than 63 square kilometres, offering multiple targets within a continuous mineralised structural corridor.

The current mineral resource includes 3.6 million tonnes at 1.08 g/t gold (127,000 ounces) and 1.0 million tonnes at 0.41% copper (4,122 tonnes). This resource lies along a major structural corridor hosting various mineralisation styles. The primary resource is north of a historic open pit at Coogee North, where gold-only mineralisation occurs along strike of the pit, and gold-copper mineralisation is offset northeast. A large magnetic anomaly approximately 700 metres below surface coincides with this resource and remains untested by drilling, presenting a compelling target for upcoming campaigns.

Deep Diamond Drilling Targets at Coogee North and West

Javelin's exploration strategy centers on drilling two deep diamond holes targeting untested geophysical anomalies at Coogee North and Coogee West. At Coogee North, a single deep hole to around 800 metres will test the source of a large magnetic anomaly beneath the existing resource. Magnetic modelling indicates prior RC drilling did not reach this main geophysical source. The hole aims to intersect a potential intrusive unit and gather detailed structural and lithological data to assess large-scale gold-copper mineralisation potential.

At Coogee West, a second diamond hole is planned to approximately 1,000 metres depth to test an interpreted intrusive feature modelled between 450 and 600 metres. This target exhibits a magnetic anomaly similar to Coogee North's, known for gold-copper mineralisation. Although masked by transported sediments from Lake Lefroy, historic shallow aircore drilling identified a broad gold anomalism zone extending about 900 by 500 metres with bottom-of-hole samples up to 1.38 g/t gold, indicating prospective bedrock mineralisation untested at depth. Both drilling programs are slated to start in Q3 2026.

Exploration Incentive Scheme (EIS) Co-Funding from WA Government

Javelin has obtained co-funding from the Western Australian Government’s Exploration Incentive Scheme (EIS) to support the two deep diamond drill holes at Coogee. This partnership reduces the company’s capital outlay and reflects government confidence in the project’s exploration potential. The EIS grant specifically funds the diamond drilling portion, enabling deeper testing of geophysical targets that would otherwise require substantial investment from the junior explorer. Approval of the grant provides certainty for the Q3 2026 drilling start.

This co-funding model allows Javelin to allocate capital efficiently across its exploration portfolio while advancing critical tests of its highest-priority targets. With government support for deep diamond drilling, the company can dedicate resources to complementary RC and aircore drilling along the main Coogee mineralised corridor. This funding structure aligns with the early-stage nature of the deeper targets and the exploratory investment needed to test untested geophysical features transitioning from greenfields to advanced exploration.

Recent High-Grade RC Drilling Results and Mineralisation at Coogee North

Recent RC drilling at Coogee North in late 2024 yielded encouraging results supporting Javelin's exploration approach. Notable intercepts include hole CORC163 with 5 metres at 14.22 g/t gold from 143 metres and 4 metres at 1.91% copper from 144 metres, and hole CORC171 with 7 metres at 6.42 g/t gold and 7 metres at 2.54% copper from 108 metres. These results confirm high-grade gold-copper shoots within the mineralised system and bolster confidence in deeper mineralisation potential.

The gold-copper mineralisation is linked to an epidote-siderite-magnetite alteration assemblage, interpreted as skarn-type alteration from magmatic intrusion. This alteration, especially the magnetite component, produces a magnetic signature detectable by geophysical surveys. Similar intrusive-related mineralisation occurs at nearby deposits like Lefroy Exploration Limited’s Burns deposit, providing a regional exploration model. Most of the current Coogee resource lies within zones hosting these high-grade shoots, indicating significant potential for depth extensions.

Coogee Project Expansion via New Tenement Option Agreement

Javelin recently secured an option agreement over two new tenements, expanding the Coogee project area to more than 63 square kilometres and significantly increasing exploration coverage. The key tenement, E15/1920, covers the southern extension of the structural corridor containing the CG-08 exploration target, highly prospective for gold. This expansion allows testing of multiple targets along a continuous structural corridor and exploration beyond current resource limits.

Work on the new Coogee South tenements has begun, including compilation of historic data and acquisition of magnetic and gravity geophysical datasets. This systematic approach aims to develop a comprehensive understanding of mineralisation and structural controls across the expanded area. The option agreement provides Javelin flexibility regarding final acquisition while securing exploration and potential development rights. The enlarged project area underscores management’s confidence in Coogee’s broader prospectivity and offers multiple targets for future advancement.

Upcoming RC and Aircore Drilling Over Main Coogee Corridor

Following the deep diamond drilling, Javelin plans RC and aircore drilling in the second half of 2026 along the main Coogee mineralised corridor, pending heritage clearance approvals. These programs aim to extend known mineralisation along strike and at depth in the more developed project areas. The RC drilling at Coogee North will focus on expanding high-grade gold and gold-copper shoots where most of the current resource resides, testing lateral and vertical continuity.

Heritage clearance requirements highlight Javelin’s commitment to responsible operations within local communities and lands. Obtaining these approvals is a standard regulatory step before drilling in Western Australia. Progress on heritage clearances indicates readiness for fieldwork in late 2026. These complementary drilling efforts will enhance understanding of mineralisation style, grade distribution, and continuity, supporting future resource definition and development planning.

Exploration Model Based on Intrusive-Related Gold-Copper Mineralisation

Javelin’s Coogee exploration strategy is founded on a geological model linking gold-copper mineralisation to magmatic intrusions and associated skarn-type alteration. The epidote-siderite-magnetite alteration assemblage at Coogee North provides a key exploration vector, with the magnetite causing a magnetic signature mappable via geophysics. This model is supported regionally by similar intrusive-related mineralisation at Western Australian goldfields deposits, including Lefroy Exploration Limited’s Burns deposit.

The company’s approach involves drilling to test interpreted intrusive bodies at depths between 450 and 1,000 metres. The deep diamond drilling aims to evaluate downdip extensions of known mineralisation and potential larger-scale deposits linked to intrusive features. Magnetic anomalies at Coogee North and West define discrete targets, with geophysical modelling outlining their depth and shape. This methodical, data-driven exploration reflects confidence in the geological model and target prospectivity.

Exploration Timeline and Upcoming Milestones

Javelin’s exploration campaign follows a staged timeline with clear milestones. The immediate focus is commencing deep diamond drilling at Coogee North and West in Q3 2026 after final permitting and site prep. These two holes will yield vital data on mineralisation associated with untested geophysical anomalies, potentially shaping broader exploration plans. Due to depth and complexity, drilling and assays may extend into Q4 2026 and 2027.

Subsequent to heritage clearance approvals, RC and aircore drilling along the main Coogee corridor will proceed in H2 2026, either concurrently with or following diamond drilling, depending on permits and logistics. Concurrently, work continues on the new Coogee South tenements through geophysical surveys and historic data review, supporting future target generation. This phased approach ensures systematic data acquisition, with each step guiding future drilling priorities. The next major public update will be the Q3 2026 diamond drilling commencement and initial assay results.

Competitive Positioning and Regional Exploration Context

The Coogee Gold Project is situated in Western Australia’s highly prospective Eastern Goldfields, a region with a rich gold production history and active exploration by multiple companies. Located within a district characterised by intrusive-related mineralisation, the project benefits from proximity to producing deposits and active exploration targets. Javelin’s granted Mining Lease and defined mineral resource provide a strong platform for project advancement and potential development.

Javelin’s exploration strategy emphasizes a systematic, technically robust approach to high-priority targets in a mineralisation-rich region. The planned deep drilling targets, guided by geophysical data, and the company’s commitment to testing untested anomalies demonstrate disciplined capital deployment. Securing WA Government EIS co-funding further validates the project’s exploration merit within the state’s mining community. The recent project area expansion via option agreement adds exploration upside and broadens exposure to the promising Coogee district.