Great Southern Mining Reports High-Grade Gold Hits at Amy Clarke Prospect

Maiden RC campaign returns intercepts up to 10.4 g/t gold near Laverton, WA

By LineZotpaper

Published19 October 2026

Read Time3 min

Sources2 outlets

Great Southern Mining has reported high-grade gold intercepts from maiden reverse circulation drilling at its Amy Clarke prospect within the Duketon gold project near Laverton in Western Australia. The best result returned 5 metres grading 6.71 grams per tonne gold from 51 metres, including a 3-metre section at 10.4 g/t gold. The drilling tested zones along a 4.7-kilometre mineralised corridor and extended known mineralisation down-dip by up to 50 metres.

The company completed 18 holes for 2,248 metres at the prospect, targeting higher-grade zones identified by earlier aircore drilling. Other notable intercepts include 2 metres at 8.92 g/t gold within an 11-metre interval grading 1.86 g/t from 45 metres, and 8 metres at 1.44 g/t from 67 metres, including 2 metres at 4.7 g/t gold. Additional results showed the system's breadth, with intercepts of 5 metres at 1.81 g/t from 61 metres and 2 metres at 1.41 g/t from a shallow 7 metres.

Great Southern managing director Matthew Keane said the prospect is "an emerging discovery with immense upside," noting that gold starts from surface and continues to the extent of drilling in fresh rock. He added that the company's aggressive 2026 RC drilling campaign has delivered strong results across three key targets including Amy Clarke, the Golden Boulder discovery and Mon Ami.

Amy Clarke lies within a high-strain structural corridor, a classic setting for gold deposition in the Eastern Goldfields. The mineralisation is associated with quartz veining and pyrite. Drilling remains shallow, averaging less than 100 metres below surface, with mineralisation observed from the oxidised zone extending into fresh rock. Reported intervals are downhole lengths; true widths have not yet been confirmed.

The prospect sits about 12 kilometres from Regis Resources' Garden Well processing facility, which has a capacity of five million tonnes per annum. It is also interpreted to lie along the same structural trend as Regis' Erlistoun open pit mine, about 3 kilometres to the north, which contains a 320,000-ounce resource grading 1.9 g/t gold.

Great Southern's broader Duketon project also includes the Golden Boulder discovery, where historic production averaged 28.6 g/t gold and the company has outlined mineralisation along 3.5 kilometres of strike. Assays are pending from another 6,000 metres of drilling at Golden Boulder and the Golden Boulder East trend.

Detailed geological mapping and multi-element geochemistry are now underway at Amy Clarke. The company is planning follow-up RC drilling and potential diamond drilling, with initial work expected to focus on open lodes in the northern part and the central section of the 4.7-kilometre trend. The system remains open to the south, where little drilling has been conducted.

Analysis

Why This Matters

The results strengthen Great Southern Mining's position in a well-endowed gold belt, with potential to define a new resource near existing processing infrastructure.
Proximity to Regis Resources' Garden Well plant reduces development risk and capital costs if a deposit is defined.
The discovery underscores the prospectivity of the Duketon Greenstone Belt, which hosts more than eight million ounces of gold resources identified by Regis Resources.

Background

The Duketon greenstone belt in Western Australia's Eastern Goldfields is a major gold-producing region. Mining heavyweight Regis Resources has identified over eight million ounces of gold resources across the belt and operates the Garden Well processing facility capable of milling five million tonnes per annum. Great Southern Mining, an ASX-listed junior explorer, holds tenure covering significant shear zones known to host the majority of deposits in the belt. Its Duketon gold project already includes the Golden Boulder discovery, where historic production averaged 28.6 g/t gold, and the company has been conducting an aggressive 2026 drilling campaign.

Key Perspectives

Great Southern Mining: The company views Amy Clarke as an emerging discovery with immense upside. Managing director Matthew Keane highlighted that gold occurs from surface and continues at depth within the fresh rock, and that the drilling campaign has delivered strong results across multiple targets. The company is moving quickly to plan further drilling and geological studies. Observers and industry: While the high-grade intercepts are encouraging, the drilling is still shallow (averaging less than 100 metres below surface) and true widths of mineralisation have not been confirmed. The economic significance of the prospect will depend on further drilling to define continuity, grade, and scale. Regis Resources: As the dominant landholder and operator in the area, Regis represents both a potential toll-treatment partner and a comparison point for deposit quality. Its nearby Erlistoun pit (320,000 oz at 1.9 g/t) provides a benchmark for the style of mineralisation being pursued.

What to Watch

Pending assay results from the ongoing 6,000-metre drilling campaign at Golden Boulder and Golden Boulder East.
The next phase of drilling at Amy Clarke, including whether the company proceeds with diamond drilling to test deeper extensions and confirm continuity.
Exploration of the untested southern portion of the 4.7-kilometre corridor, which could significantly expand the scale of the mineralised system.

Sources

Great Southern uncovers new high-grade hits in WA gold hunt · Sydney Morning Herald - Latest News
Great Southern uncovers new high-grade hits in WA gold hunt · Brisbane Times - Latest News

Checked

12 claims in this story checked against 1 source: 9 supported.

Show each claim

SupportedHeadline: Great Southern Mining reports high-grade gold hits at its Amy Clarke prospect.Sydney Morning Herald - Latest News: “Great Southern Mining has hit paydirt with maiden reverse circulation (RC) drilling at its Amy Clarke prospect within the Duketon gold project near Laverton in Western Australia, intersecting high-grade gold along a previously defined 4.7-kilometre mineralised corridor.”
SupportedBest result: 5 metres grading 6.71 g/t gold from 51 metres, including a 3-metre section at 10.4 g/t gold.Sydney Morning Herald - Latest News: “The headline result came from a hole that delivered 5m grading 6.71 grams per tonne (g/t) gold from 51m, including a richer three-metre core going 10.4g/t gold.”
SupportedMineralisation extended down-dip by up to 50 metres.Sydney Morning Herald - Latest News: “extending mineralisation down-dip by up to 50m and broadening areas of higher-grade gold”
SupportedDrilling tested zones along a 4.7-kilometre mineralised corridor.Sydney Morning Herald - Latest News: “intersecting high-grade gold along a previously defined 4.7-kilometre mineralised corridor”
SupportedThe company completed 18 holes for 2,248 metres at the prospect.Sydney Morning Herald - Latest News: “The 18-hole, 2248-metre campaign tested higher-grade zones identified by earlier aircore drilling.”
SupportedManaging director Matthew Keane said the prospect is "an emerging discovery with immense upside."Sydney Morning Herald - Latest News: “Amy Clarke is an emerging discovery with immense upside. The gold starts from surface and continues to the extent of the drilling in the fresh rock.”
SupportedKeane said the 2026 RC campaign delivered strong results across three key targets: Amy Clarke, Golden Boulder discovery and Mon Ami.Sydney Morning Herald - Latest News: “The Company’s aggressive 2026 RC drilling campaign has delivered strong results across three key targets, incorporating Amy Clarke, the Golden Boulder discovery and Mon Ami”
Partly supportedAmy Clarke lies within a high-strain structural corridor, a classic setting for gold deposition in the Eastern Goldfields.Sydney Morning Herald - Latest News: “According to Great Southern, the prospect lies in a high-strain structural corridor”
Partly supportedDrilling remains shallow, averaging less than 100 metres below surface, with mineralisation observed from the oxidised zone extending into fresh rock.Sydney Morning Herald - Latest News: “The company says while drilling remains shallow, averaging less than 100m below surface, with mineralisation observed from surface in the oxidised, or weathered, horizon and extending at depth into fresh rock.”
Partly supportedDetailed geological mapping and multi-element geochemistry are now underway at Amy Clarke.Sydney Morning Herald - Latest News: “detailed geological and structural mapping is underway, alongside multi-element geochemistry of selected intervals”
SupportedThe prospect sits about 12 kilometres from Regis Resources' Garden Well processing facility, which has a capacity of five million tonnes per annum.Sydney Morning Herald - Latest News: “The company says the results reinforce the prospect’s potential, sitting just 12km from Regis Resources’ Garden Well processing facility.”
SupportedErlistoun open pit mine, about 3 kilometres north, contains a 320,000-ounce resource grading 1.9 g/t gold, and lies on the same structural trend.Sydney Morning Herald - Latest News: “Amy Clarke is interpreted to lie along the same structural trend that hosts Regis’ Erlistoun open pit mine, about 3km to the north, which contains a 320,000-ounce resource grading 1.9g/t gold.”