Great Southern Mining Ltd
Great Southern Mining Limited (ASX: GSN) has announced a strategic pivot toward high-impact drilling at its 100% owned Mon Ami Gold Project by Great Southern Mining Ltd, targeting significant resource expansion at a deposit that sits on granted mining infrastructure with 1.56Mt @ 1.11 g/t Au for 55,500 oz Au already defined.
With drilling scheduled to commence in April 2026 and gold prices exceeding A$7,000 per ounce, the company is positioning the Mon Ami Gold Project by Great Southern Mining Ltd as a near-term development opportunity with exceptional exploration upside, particularly at depth where historic drilling remains extremely limited.
Strategic Advantages Position Mon Ami for Rapid Development
Mon Ami's development potential stems from several key operational advantages that distinguish it from typical exploration projects. Furthermore, the project's infrastructure readiness sets it apart from greenfield developments.
Infrastructure & Approvals Already in Place:
- Located on granted Mining Licence M 38/1256
- Special haulage licence granted for route to sealed road access
- Archaeological, ethnographic, flora and fauna surveys completed
- Metallurgical studies and waste rock classification studies finalised
Proximity to Processing Solutions:
- Multiple operating mills within 50km trucking radius
- Granny Smith Mill just 10km away, operating at half capacity
- Strategic location 17km south-east of Laverton
- 10km north-east of the +2Moz Granny Smith gold mine
This infrastructure advantage could significantly reduce development timelines and capital requirements compared to greenfield projects. Consequently, the Mon Ami Gold Project by Great Southern Mining Ltd benefits from reduced execution risk.
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Three High-Priority Targets Drive April Drilling Programme
The upcoming drilling programme will focus on three compelling expansion opportunities identified through technical review. In addition, these targets represent the highest probability areas for resource growth.
Northern Repeat Lode at Blanc Platt Target
Recent aircore drilling has confirmed the potential for a parallel lode system north of the existing resource. Key historical intersections include:
| Drill Hole | Intersection | Grade |
|---|---|---|
| MLRC009 | 2m from 70m | 4.8 g/t Au |
| ML032 | 2m from 100m | 3.23 g/t Au |
| MA10 | 11m from 40m | 0.64 g/t Au (incl 4m @ 1.06 g/t Au) |
| MA12 | 18m from 36m | 0.64 g/t Au (incl 2m @ 1.7 g/t Au) |
The recent aircore hole 25MAAC039 intersected 2m at 1.86 g/t Au from 20m, complementing these historic results and suggesting substantial near-surface mineralisation. Furthermore, this result validates the geological interpretation of parallel lode systems.
High-Grade Depth Extensions
Limited drilling beyond 150m vertical depth has revealed exceptional high-grade potential. However, the standout result came from 21MARC010:
- 10m @ 2.7 g/t Au from 241m including 5m @ 5.2 g/t Au
- 21m @ 1.0 g/t Au from 255m
- Hole extended 30m past planned depth due to pervasive alteration
- Represents 100m step-out from previous high-grade zone
This deep intersection demonstrates the 700m down-plunge extent of high-grade mineralisation and remains open along strike and at depth. Consequently, this provides confidence in the depth potential of the Mon Ami Gold Project by Great Southern Mining Ltd.
Western Offset Target
Late-2024 soil geochemistry defined two anomalous gold trends with up to 100ppb Au approximately 400m west of the main resource. For instance, follow-up drilling intercepted:
- 2m at 2.56 g/t Au from 62m
- Within broader 10m at 0.77 g/t Au from 54m in hole 25MAAC022
The Ida H Analogue: A Historical Blueprint for Success
Understanding Geological Analogies in Mining
When evaluating mineral deposits, geologists often use analogies – comparing similar geological settings, structural controls, and mineralisation styles to predict potential at depth or along strike. This scientific approach helps guide exploration strategies and resource estimation.
GSN considers the Ida H deposit as the most applicable analogue for Mon Ami's depth potential. Located just 8km north along the same Barnicoat Shear Zone, Ida H demonstrates the exceptional high-grade potential of this geological setting.
Historical Ida H Production:
- 229,900t @ 22.6 g/t Au for 170,650 oz in early 1900s
- Underground mining extended to ~450m vertical depth
- Similar geological hosting in pinching and swelling quartz-sulphide veins
- Northern-plunging mineralisation within Barnicoat Shear Zone
This analogy is particularly compelling because Mon Ami's deepest hole (21MARC010) shows widening alteration and mineralisation at depth, suggesting the system strengthens with depth similar to Ida H's characteristics. Furthermore, this geological analogy provides confidence in the long-term potential.
April Drilling Campaign Targets Resource Growth
The announcement outlines that the comprehensive drilling programme commencing in April 2026 will systematically test these three high-priority targets. In addition, the programme will integrate with broader exploration activities across the company's portfolio.
Immediate Objectives:
- Blanc Platt shallow extensions – Test down-plunge continuity of surface mineralisation
- High-grade depth testing – Follow up exceptional deep intersections in 21MARC010
- Western offset exploration – Evaluate parallel lode potential along cross-cutting structures
Strategic Timeline:
- April 2026: High-impact drilling commences
- Programmes integrated with nearby Duketon Gold Project activities
- Technical studies ongoing to optimise drill targeting
Managing Director Commentary
"The Barnicoat Shear has delivered multiple high grade gold deposits and our Mon Ami Gold Project has outstanding exploration potential, especially at depth where the historic drilling beyond 150m vertical depth is limited," said Matthew Keane, Managing Director.
Investment Thesis: Near-Term Development Meets Exploration Upside
Mon Ami represents a unique investment proposition combining immediate development potential with significant exploration upside. However, the combination of these factors creates a compelling investment case.
Near-Term Development Catalysts:
- Existing infrastructure and approvals reduce development risk
- Multiple processing options within economic trucking distance
- Current resource provides foundation for mining studies advancement
- Rising gold prices enhance project economics at A$7,000+ per ounce
Exploration Value Drivers:
- Minimal deep drilling beyond current resource boundaries
- Three distinct target areas with confirmed mineralisation
- Historical precedent from Ida H deposit demonstrating depth potential
- Open mineralisation along strike and at depth
Resource Expansion Potential:
Current 55,500 oz Au resource represents only the beginning, with:
- Limited drilling beyond 150m vertical depth
- Confirmed high-grade intersections at 241-255m depth
- Multiple parallel lode systems identified
- 700m down-plunge extent already established
Furthermore, the systematic approach to exploration targeting provides multiple opportunities for resource growth.
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Why Investors Should Track Great Southern Mining's Mon Ami Development
Great Southern Mining's Mon Ami Gold Project by Great Southern Mining Ltd stands out in the current market environment for several compelling reasons. Moreover, the project's unique characteristics create multiple value drivers for shareholders.
Operational Advantages:
- Granted mining licence with requisite approvals already secured
- Strategic location near multiple processing facilities
- Experienced management with proven track record in WA goldfields
- Systematic exploration approach targeting high-probability zones
Market Positioning:
- Current gold price environment exceeds A$7,000 per ounce
- Infrastructure-ready project reduces typical development timelines
- Multiple expansion vectors provide sustained newsflow potential
- Laverton district location in world-renowned mining province
Upcoming Catalysts:
- April 2026 drilling commencement targeting high-grade zones
- Resource update potential from successful exploration
- Development studies advancement as resource grows
- Processing arrangements discussions as project de-risks
Key Investment Takeaway
Great Southern Mining has positioned Mon Ami as a rare combination of near-term development potential and significant exploration upside. With infrastructure advantages, strategic location, and the Ida H analogue suggesting exceptional depth potential, the April drilling campaign could deliver substantial value for shareholders tracking this Laverton district opportunity.
The convergence of favourable gold prices, existing infrastructure, and systematic exploration targeting makes Mon Ami a project worthy of investor attention as Great Southern Mining executes its strategy to unlock the deposit's full potential. Consequently, the Mon Ami Gold Project by Great Southern Mining Ltd represents a compelling opportunity for investors seeking exposure to advanced gold projects with significant upside potential.
Could Mon Ami Be Your Next Gold Investment Opportunity?
With infrastructure already in place, multiple high-grade targets identified, and drilling set to commence in April 2026, Great Southern Mining's Mon Ami Gold Project presents a compelling opportunity for investors seeking exposure to advanced gold projects with significant expansion potential. The combination of near-term development advantages and exceptional exploration upside in the proven Laverton district makes this a story worth following closely. To explore Great Southern Mining's full portfolio and stay updated on the Mon Ami development progress, visit gsml.com.au and discover why this infrastructure-ready gold project could be positioned for substantial value creation.
