Javelin Minerals Unveils High-Priority Gold-Copper Drill Targets at Coogee West
New Geophysical Analysis Reveals Multiple Untested Anomalies Adjacent to World-Class St Ives Goldfield
Javelin Minerals (ASX: JAV) has identified several highly promising gold-copper drilling targets at its Coogee West Project in Western Australia's Eastern Goldfields through comprehensive reprocessing of ground and aeromagnetic survey data.
The newly identified Javelin Minerals Coogee West drill targets, many previously hidden beneath extensive alluvial cover, will be the focus of the company's upcoming exploration drilling program scheduled to commence in Q3 2025.
Compelling Geophysical Targets Reveal Unexplored Potential
The geophysical review has highlighted five high-priority targets across the Coogee West Project area (E26/177), with particularly significant findings including:
- A 1.8km and 3km strike gold trend revealed by geophysics that remains largely untested
- Several discrete, strong magnetic anomalies similar to those identified at the Coogee North gold-copper resource
- Multiple under-explored magnetic trends representing significant exploration targets
- Several interpreted intrusive bodies considered highly prospective for gold-copper mineralisation
"We know that Coogee hosts a significant gold system in a world-class location, situated on the edge of the renowned St Ives goldfield," said Javelin Executive Chairman Brett Mitchell. "Despite these outstanding credentials, large areas of the project remain undrilled."
Standout Target: CG-04 "Bulls-Eye" Anomaly
Among the high-priority Javelin Minerals Coogee West drill targets, the CG-04 target stands out as particularly compelling. This discrete, untested, circular "bulls-eye" magnetic anomaly with an amplitude of approximately 700nT is located around 1.5km west of the Coogee Pit.
The magnetic response is notably stronger than the nearby CG-01 target (approximately 400nT), which is already known to host gold-copper mineralisation north of the Coogee Pit. The CG-04 anomaly is interpreted to commence from a depth of 300 vertical metres, extending to approximately 1km, and remains completely untested by drilling.
Limited Historical Testing
Previous exploration at Coogee West has been limited and sporadic. Historical air core drilling only reached shallow depths of 25-30m, failing to adequately test these newly identified targets. The geophysical review now provides a clear pathway for systematic deeper drilling of these high-potential areas.
Understanding Magnetic Anomalies in Gold Exploration
What Are Magnetic Anomalies and Why Do They Matter?
Magnetic anomalies represent variations in the Earth's magnetic field that may indicate the presence of certain minerals below the surface. In gold exploration, these anomalies often correspond to concentrations of magnetic minerals like magnetite, which can be associated with gold-bearing systems.
At Coogee, gold mineralisation is closely associated with pyrite, often intergrown with magnetite. Higher gold grades tend to correlate with increased concentrations of both minerals. The magnetic trends identified are interpreted to represent magnetite-bearing zones and are therefore considered priority targets for gold mineralisation.
This relationship makes magnetic surveys a valuable tool for identifying potential gold-bearing structures that might otherwise remain hidden beneath cover sediments.
Types of Magnetic Anomalies at Coogee West
The Javelin Minerals Coogee West drill targets include several distinct types of magnetic features:
| Target Type | Description | Example at Coogee |
|---|---|---|
| Circular "Bulls-Eye" | Discrete, circular magnetic high | CG-04 (700nT amplitude) |
| Linear Trend | Extended magnetic anomalies along structural corridors | CG-06 (1.8km length), CG-07 (3km length) |
| Magnetic Aureole | Ring-shaped magnetic responses surrounding intrusive bodies | CG-08 target area |
Future Plans and Exploration Timeline
Javelin is now finalising plans for its next exploration drilling program, which is expected to commence during the September quarter 2025. The program will focus on testing the highest-priority targets identified through the geophysical review.
Key aspects of the upcoming program include:
- Drill testing of the CG-04 "bulls-eye" magnetic anomaly
- Exploration of the CG-06 and CG-07 magnetic trend zones with their 1.8km and 3km strike lengths
- Investigation of the CG-05 target area where previous limited drilling returned anomalous gold intersections
- Testing of the CG-08 magnetic aureole target where historical shallow drilling intersected anomalous gold values
Investment Potential at Coogee
The Coogee Project represents a compelling investment opportunity, with several key factors supporting its potential:
Strategic Location in a World-Class Gold Region
The Coogee Gold Project is located in Western Australia's Eastern Goldfields, approximately 20km northeast of Kambalda and 55km south of Kalgoorlie, on the northern side of Lake Lefroy. The project sits within a fertile greenstone belt that hosts numerous historical mines and known mineral occurrences, including the major St Ives gold camp.
Substantial Existing Resource Base
Javelin already holds substantial gold resources across its portfolio:
Coogee Gold Project Mineral Resource:
- 3.65Mt at 1.08 g/t Au totalling 126,685 ounces of gold
- 1.01Mt at 0.41% Cu, containing 4,133 tonnes of copper metal
Eureka Gold Project Mineral Resource:
- 2.45Mt at 1.42 g/t Au totalling 112,000 ounces of gold
Unexplored Potential
Despite its location in a prolific gold region, large areas of the Coogee Project remain unexplored or inadequately tested due to extensive alluvial cover. The newly identified geophysical targets represent significant exploration upside with the potential to substantially increase the company's resource base.
Exploration Context: Previous Work at Coogee
Historical exploration at the Coogee West area has been limited, with previous work focused primarily on the areas that became the Coogee open pit. The limited exploration conducted in the western portion of the project included:
- Sporadic reconnaissance drilling by Ramelius Resources across the salt lake area
- Wide-spaced air core drilling that typically only reached depths of 25-30m
- Limited RC and diamond drilling by Terrain Minerals in the northern portion of the tenement
This limited historical work failed to adequately test the deeper magnetic anomalies now identified through Javelin's geophysical review.
Geological Setting of the Javelin Minerals Coogee West Drill Targets
The Coogee Project is located in the southern part of the Norseman-Wiluna Greenstone Belt within the Parker Domain of the Kalgoorlie Terrane. The geological sequence at Coogee comprises:
- Variably magnetic, northwest-trending mafic and ultramafic units
- Granitic intrusions
- Surrounding sedimentary sequences and intermediate to felsic tuffs
The aeromagnetic imagery clearly delineates these different lithological units, while gravity data complements the magnetic interpretation with localised gravity highs correlating with mafic and ultramafic lithologies, and gravity lows associated with sedimentary rocks and granitic intrusions.
Individual Target Analysis
CG-05 Target – Lake Infill Zone
The CG-05 target area contains anomalous gold intersections from wide-spaced air core drilling conducted by Ramelius Resources in 2015. Follow-up diamond drilling returned broad gold intervals with minor associated copper mineralisation. The observed lithologies are consistent with those along the Coogee Pit trend, suggesting geological continuity and warranting further drill testing.
CG-06 & CG-07 Targets – Magnetic Trend Zone
These targets comprise two significant magnetic anomalies measuring approximately 1.8km and 3km in length respectively. These trends are currently underexplored, with very limited to no prior drilling.
3D magnetic inversion modelling highlights magnetic mineral distribution along these trends. Given the established relationship between magnetite, pyrite and gold mineralisation in the region, these magnetic trends represent high-priority targets for the upcoming drilling program.
CG-08 Target – Magnetic Aureole Target
Several interpreted intrusive bodies represent compelling copper-gold targets, particularly within the magnetic aureoles surrounding these features. This geological setting bears similarities to the Burns Prospect (Lefroy Minerals), where high-grade gold-copper discoveries occur in comparable environments.
The CG-08 target area is considered high priority as historical shallow drilling intersected anomalous gold values adjacent to a well-defined magnetic aureole. This feature remains untested at depth, making it a compelling target for follow-up drilling.
Why Investors Should Follow Javelin Minerals
Javelin Minerals offers investors exposure to a compelling gold-copper exploration opportunity with several distinct advantages:
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Strategic Asset in Tier-1 Mining Jurisdiction: Located in Western Australia's Eastern Goldfields, adjacent to the world-class St Ives Goldfield
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Established Resource Base: Existing gold resources of 238,685 ounces across the Coogee and Eureka projects provide a solid foundation
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Significant Exploration Upside: Multiple newly identified, high-priority targets with strong geophysical signatures
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Near-Term Catalysts: Upcoming drilling program scheduled to commence in Q3 2025, with the potential to deliver significant news flow
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Experienced Management: Led by a team with proven expertise in identifying and developing gold assets
The combination of established resources, newly identified exploration targets, and upcoming drilling makes Javelin Minerals a company worth watching closely as it advances the Coogee West Project through the next phase of exploration. Furthermore, with new gold-copper opportunities becoming increasingly valuable in the current market, Javelin's strategic position provides significant potential for growth.
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