Marmota Eyes First Greenewood Gold Assays Next Week Across 2km Strike
Key Takeaways
- First assay results from Marmota's expanded Greenewood and Mainwood drilling program are expected as early as next week, with a series of further zone-by-zone releases anticipated over the following weeks.
- 313 holes have now been completed across the combined Greenewood and Mainwood system, which extends over 2km of strike length — a program scale that required the plan view map to be physically extended to accommodate new drill coverage.
- Mainwood is receiving its first systematic drilling since 2018, with only approximately 3,700m across 53 holes historically drilled there prior to this campaign — making it a materially under-tested target now receiving Greenewood-style attention.
- Marmota holds 90% ownership of both zones through the Golden Moon JV, with Ministerial Consent for the structure granted in June 2025, meaning the company captures the vast majority of any resource value defined.
- An Indicated Resource upgrade — required as a direct input into the maiden scoping study that commenced in November 2025 — is a targeted outcome of the current drilling density program.
Greenewood gold discovery: first assays due next week as drilling program expands across 2km strike
Marmota Limited (ASX: MEU) has announced a significant update on its Greenewood gold discovery, with first assay results now expected as early as next week. The update marks a meaningful escalation in program scale, with 313 holes now completed across both the Greenewood and Mainwood zones, and drilling expected to wrap up in early October 2026.
This is not a single data-point event. Marmota has flagged that a series of assay announcements is anticipated over the coming weeks, as results arrive zone by zone, making the next month a material catalyst window for investors watching the stock.
When big ASX news breaks, our subscribers know first
Q1 FY27 drilling campaign: what’s been drilled and why it matters
A program that keeps growing
Extensional drilling has pushed in both directions, north at Greenewood and south into the maiden Mainwood zone, intersecting geology described in the announcement as “almost identical” to the zones that produced outstanding gold intersections in prior releases (ASX:MEU 11 Dec 2025, 26 Feb 2026, and 28 May 2026). That geological consistency is what has driven the program’s expansion.
The geological consistency driving program expansion is grounded in prior results: bonanza grades at Greenewood were first confirmed in Marmota’s maiden drilling program, establishing the high-grade character of the system that extensional drilling is now chasing north and south.
The scale of the combined system is now considerable. Together, Greenewood and Mainwood extend over 2km in strike length, and the expansion northward has been so pronounced that the plan view map (Figure 3 in the announcement) had to be extended to accommodate the new drill coverage. Drilling completion is targeted for early October 2026.
Mainwood: a maiden zone taking shape
Mainwood represents Marmota’s maiden drilling program in that zone, and also the first drilling at Mainwood since 2018. Prior to this campaign, Mainwood had received very limited attention: only approximately 3,700m of RC drilling across 53 holes with an average depth of 70m. That is a lightly tested target by any measure.
For context, Greenewood itself had only approximately 7,000m of RC drilling prior to Marmota’s own maiden program in July/August 2025, which established it as a significant discovery. Mainwood is now receiving a similar level of systematic attention for the first time.
Marmota holds 90% ownership of both the Greenewood and Mainwood zones through the Golden Moon JV, via its 100%-owned subsidiary Half Moon Pty Ltd. Ministerial Consent for this structure was granted in June 2025.
Key program statistics at a glance:
- 313 total holes drilled (110 at Greenewood / 203 at Mainwood)
- Mainwood maiden program: first drilling since 2018
- Historical Mainwood RC drilling prior to this campaign: approximately 3,700m across 53 holes
- Combined strike length potential: over 2km
- Program completion target: early October 2026
Understanding the Gawler Craton gold belt: why location matters for this discovery
Marmota’s Gawler Gold Project sits within what the company describes as an “Arc of Gold,” a series of gold deposits arranged along the flanks of a major Y-shaped gravity anomaly in the NW Gawler Craton. Reading east to west, the arc includes Aurora Tank, Golf Bore, Campfire Bore, Greenewood/Mainwood, the Challenger Gold Mine (which produced over one million ounces of gold), and Monsoon and Typhoon. Marmota owns all of the unmined deposits, either 100% or 90%.
Geography matters here. Greenewood/Mainwood sits approximately 35km north-west of Marmota’s flagship Aurora Tank deposit and approximately 30km north-east of the Challenger Gold Mine. That proximity creates the kind of economies of scope and scale that would be relevant to any future development scenario.
There is also a discovery angle worth understanding. Most deposits in the Arc of Gold, including Challenger (discovered in 1995), were found through traditional regional calcrete sampling. Greenewood does not have a surface calcrete expression, meaning conventional regional-scale sampling would have missed it entirely. The announcement notes this is an important milestone in Gawler Craton discovery history, as it points to significant potential for further gold discoveries across the project area where calcrete sampling is not an effective targeting tool.
Greenewood’s significance within the region is sharpened by the benchmark it has already set: Gawler Craton gold results since 1995 had not matched the grade and continuity produced by Marmota’s earlier Greenewood drilling, placing the current extensional program in a historically meaningful context.
Aurora Tank, Marmota’s flagship, adds further strategic weight to the project. It has delivered outstanding gold intersections including multiple bonanza grades near surface, strong metallurgical recoveries in testwork (ASX:MEU 28 April 2025), and is considered to have potential for low-cost, low-capex open pit heap leach gold production.
The next major ASX story will hit our subscribers first
What’s next: assay results and the scoping study pathway
The near-term catalyst pipeline is unusually clear. Marmota has outlined a sequenced schedule of results and milestones, and investors have a direct line of sight to each one.
The four objectives driving the current program are:
- Northern and depth extensions at Greenewood
- Southern extensions to identify a contiguous high-grade zone in Mainwood
- Significantly grow the mineral resource
- Increase drilling density across missing sections to enable an Indicated Resource, which is required as a direct input into the maiden scoping study
The maiden scoping study recently commenced (ASX:MEU 18 Nov 2025), and the Indicated Resource upgrade from this program is intended to feed directly into that process. Marmota has also noted its reasoning for releasing partial assays while drilling continues: given the “substantial size” of the program, early results can be reported without being misleading, which departs from its normal practice of waiting for full program completion.
A video update of drilling at the Greenewood zone is also publicly available for investors who want a visual overview of the site (YouTube link included in the source announcement).
| Milestone | Target Date | Zone | Status | Significance |
|---|---|---|---|---|
| First assay results released | As early as next week | Greenewood / Mainwood | Imminent | First hard data from the expanded program; material price catalyst |
| Series of further assay announcements | Over coming weeks | Greenewood / Mainwood (zone by zone) | Anticipated | Results expected to arrive progressively as laboratory prioritisation continues |
| Full drilling program completion | Early October 2026 | Greenewood and Mainwood | On track | Closes the expanded program, which currently stands at 313 completed holes; sets up final assay reporting |
| Indicated Resource upgrade | Post drilling completion | Combined system | Targeted | Required input for the maiden scoping study; requires increased drilling density across sections |
| Maiden scoping study progression | Commenced (ASX:MEU 18 Nov 2025) | Gawler Gold Project | In progress | First formal economic assessment of the project; Indicated Resource upgrade feeds directly into this |
The aerial views in Figures 1 and 2 of the announcement show the physical extent of drilling progress at Greenewood (looking NE to SW, with Mainwood visible in the distance) and at Mainwood (looking south to north), respectively. Figure 3 provides the combined plan view of the full Greenewood/Mainwood system, illustrating the over-2km strike length now under exploration. Figures 4 and 5 place the entire system in the context of Marmota’s broader Gawler Gold belt holdings.
The next few weeks represent one of the more concentrated information windows Marmota has signalled in recent months. With a series of assay releases expected progressively through late September and into October, investors following this stock have a clear timeline to watch.
Ready to Follow the Greenewood Assay Results as They Land?
With 313 holes now completed across a 2km strike and first assays expected as early as next week, Marmota’s Greenewood and Mainwood drilling campaign is entering one of its most data-rich periods to date. The sequenced release schedule — zone by zone over the coming weeks — gives investors an unusually clear window into a program that is directly feeding a maiden scoping study.
Explore Marmota Limited (ASX: MEU) on Discovery Alert to track the full assay pipeline, review the project’s strategic positioning within the Gawler Craton’s Arc of Gold, and assess what an Indicated Resource upgrade could mean for the project’s development trajectory.