What Loki’s 3D Inversion Results Reveal About the Southern Conductor

The same airborne survey that confirmed Stakeholder Gold’s BA2601 discovery also lit up a second target 1.4 km to the south. The difference is what makes it interesting.

That southern zone covers roughly 1.45 km² and carries a distinctly different geophysical signature: it is conductive, but it lacks the magnetic response that defines the confirmed discovery. That single absence is the story.

The timing matters. Stakeholder is preparing its next drill campaign along a 35-km ultramafic trend, and the 3D inversion models are not merely confirming what BA2601 already found. They are actively deciding where the drills go next. This is a target-generation moment, not a result-confirmation one.

After reading this, you will know what the 3D inversion models actually show, why the southern conductor’s missing magnetic signature is the detail that matters most, and what the realistic range of outcomes looks like when a drill eventually tests it. The gap between a geophysical target and an economic deposit is where most exploration stories are decided, and understanding the method is how you read that gap correctly.

How 3D inversion turns raw airborne data into drill targets

When you look at a 3D inversion result on a screen, you see coloured blobs at depth: reds and blues stacked in slices that represent how the ground behaves electrically and magnetically. Those colours are not photographs of rock. They are the output of a calculation.

The underlying data comes from two surveys. Versatile Time Domain Electromagnetic (VTEM) surveying measures how quickly an induced electrical current decays in the subsurface: currents linger in conductive rock and dissipate quickly in resistive rock. A resistivity inversion mathematically reconstructs a 3D model of where those currents slow down (conductors) and where they fade fast (resistors).

The VTEM and UAV magnetic surveys used at Loki sit within a broader toolkit of airborne mineral exploration techniques that have transformed how geologists rank targets before a single drill rod turns, compressing the time between anomaly detection and drill-ready prioritisation.

The magnetic side works similarly. UAV magnetic data feeds a magnetic susceptibility inversion, which reconstructs where the rock is magnetic. Overlay the two and geologists can cross-check anomalies: a body that is both conductive and magnetic carries a very different geological interpretation than one that is conductive alone.

Here is the workflow in sequence:

• Data acquisition: VTEM data was originally flown in 2017 by Geotech Ltd., and UAV magnetic data was flown in 2024.
• Mathematical inversion: the raw signals are converted into 3D models of resistivity and magnetic susceptibility, with inversions nearing completion as of late July 2026.
• Geological interpretation: geologists compare the modelled anomalies against known geology to rank drill targets.

The result is powerful, but it is not certain. This is the caveat that governs everything that follows.

A 3D inversion solution is inherently non-unique: multiple different subsurface configurations can produce the same surface measurement. That is why ground follow-up and drilling are always required to validate the model.

Confidence in any modelled cell decreases with depth and with how well the inversion has been calibrated against real geology. VTEM is most reliable for conductors within the 0-500 m depth range; smaller or disseminated bodies can yield subtle anomalies or none at all. A geophysical target is a ranked hypothesis. That is exactly how much weight it deserves before a drill tests it.

What the Loki intrusion looks like in the inversion models

At the BA2601 location, the magnetic susceptibility inversion identified a substantial, coherent magnetic body, and the drill collar for the discovery hole was placed directly into it. The 200 m depth slice captures this body clearly. The VTEM resistivity inversion characterises the same feature as relatively resistive, visible on the 150 m slice.

That combination, magnetic and resistive at depth, is interpreted as consistent with a sulphide-bearing ultramafic intrusion rather than a graphitic or saline conductor. The magnetism points to magnetite or pyrrhotite in the rock, which separates a genuine magmatic sulphide system from the false conductors that plague EM surveys.

What makes the southern conductor geologically distinct

The southern conductor presents a puzzle. It is clearly conductive, it covers roughly 1.45 km², and it sits about 1.4 km south of the BA2601 drill collar. It has never been drilled, and its surface has never been sampled. As of September 2026, it is entirely untested.

What it lacks is the defining feature of the confirmed target. There is no coincident magnetic high. At BA2601, conductivity and magnetism line up. Here, the conductivity stands alone.

That absence is the single most important data point to carry forward. A magnetite-poor mineralogy is what a non-magnetic conductor implies, and that is what makes this something other than a simple repeat of the BA2601 target. It is also what makes the eventual drill result genuinely unpredictable.

Ultramafic nickel systems host a broader range of mineralisation styles than the classic pyrrhotite-dominated sulphide model, and the awaruite-bearing variant, which concentrates nickel in a native alloy rather than a sulphide phase, would produce exactly the kind of low-magnetic, conductive response the southern conductor displays.

A non-magnetic conductor in an ultramafic setting has three standard explanations, ordered here from most to least consistent with a productive magmatic sulphide system:

1. Sulphides with little pyrrhotite or magnetite: a genuine sulphide system that happens to be magnetite-poor, which would still be a valuable target with a different mineralogical style than BA2601.
2. A separate and distinct intrusive phase: a different pulse of magma with its own chemistry, which may or may not carry economic mineralisation.
3. A structural or stratigraphic conductor: a feature unrelated to the primary magmatic system entirely, which would be a geological dead end for the sulphide thesis.

The distinction between a magnetic-coincident and a non-magnetic conductor is not a technical footnote. It directly shapes the range of outcomes a drill hole might return, from a mineralogically different sulphide system to nothing of economic interest. The Yukon Geological Survey formally recognises mafic-ultramafic complexes as prospective Ni-Cu-PGE exploration targets, which gives the setting genuine credibility. It does not tell you which of the three explanations applies here.

Where the southern conductor sits in the broader exploration sequence

The southern conductor is not an isolated anomaly. The same 3D models will refine targets at the Loki West corridor and the newly staked Loki East area, placing this conductor within a multi-target pipeline.

The structural context is the 35-km ultramafic trend. Both BA2601 and the southern conductor sit along it, which is what gives the exploration programme its district-scale rationale rather than a single-hole story.

What geophysical inversion can and cannot tell you about a magmatic sulphide system

Two industry cases show why a strong inversion signature on a secondary target is not a promise.

At the Lalor volcanogenic massive sulphide (VMS) deposit, ZTEM and VTEM 3D inversions run by Hudbay and Geotech successfully mapped the major copper-gold deposit. The same inversions flagged an adjacent anomaly called the South Bull’s Eye, which showed its own distinct conductivity and magnetic susceptibility responses. On drilling, it returned only sub-economic stringer sulphides.

The South Bull’s Eye is the clearest single illustration of the gap between an inversion response and economic geology: a distinct, well-imaged secondary anomaly that drilling proved uneconomic.

The McFaulds Lake precedent points the other way, toward patience. There, 3D inversions of VTEM, magnetic, and gravity data produced a suite of mapped anomalies interpreted as potential ultramafic Ni-Cu-PGE intrusions. Many required multiple drilling rounds and iterative re-interpretation, because early programmes either missed the target core or returned unexpected grades.

Read together, the two cases frame the realistic outcome space. A compelling inversion target is a necessary condition for a discovery. It is not a sufficient one.

Three technical limitations of VTEM inversion apply directly to the Loki southern conductor:

• Depth ceiling: VTEM is reliable to approximately 500 m for higher-conductance bodies. Small or moderately conductive disseminated systems beyond that can produce anomalies too subtle to separate from background.
• Positional uncertainty: there is inherent error between where a geophysical inversion places an anomaly cell and where a physical drill collar can be. Past campaigns have missed the core of an anomaly for exactly this reason.
• Non-uniqueness of solution: different subsurface configurations, and calibration differences between datasets flown in different years, can produce the same signal or introduce artefacts mistaken for geology.

None of this is a reason to discount the southern conductor. These precedents are the calibration frame that lets you evaluate the coming announcement accurately, rather than dismissing the target or over-weighting it. Its true value will only be known once a drill hole tests the core of the anomaly at the correct azimuth and dip.

AI-driven target generation is beginning to change how 3D inversion outputs are interpreted at scale, with machine-learning models trained on multi-survey datasets able to flag anomaly combinations that correlate historically with economic mineralisation, a capability that could eventually sharpen the southern conductor ranking beyond what manual geological interpretation allows.

What the 3D results mean for Stakeholder Gold’s upcoming drill campaign

The inversions are now doing something concrete: directing capital. The 3D resistivity and magnetic-susceptibility models are being used to refine drill collar positioning across the Loki structural corridor, the Loki West target corridor, and the newly staked Loki East area. That means the geophysics is allocating exploration spend across multiple targets at once.

Testing the southern conductor properly forces a set of design decisions. A 1.45 km² target has a core, and hitting that core depends on getting three things right: azimuth, dip, and depth. Get any of them wrong and the hole risks a positional miss, drilling past the edge of a real body and returning weak results that misrepresent what is there.

Here is the logical sequence Stakeholder now faces:

1. Finalise the 3D inversion modelling.
2. Design drill collars for the southern conductor at the right azimuth and dip.
3. Permit and mobilise.
4. Drill and assay.
5. Re-interpret the result against the full 3D model.

The permitting groundwork is largely in place. In January 2026, the Yukon Government’s Dawson Mining District granted Stakeholder Class 1 exploration approval for the Ballarat Project. The 2025/2026 exploration blueprint allocated roughly 1,200 m of drilling to the Skye Gold Zone and an initial 400 m to Loki, which was subsequently expanded. Funding came from a C$2.5 million private placement finalised on 20 February 2026.

Qualified Person Adam Fage (M.Sc., P.Geo.) has outlined the forward objectives: refining geophysical targets, drill-testing the conductive anomalies near the discovery hole, and investigating similar structures along the 35-km trend. The company, with a market capitalisation of roughly C$19.37 million in late 2025, has also actively staked the new Loki East area in response to the geophysical findings.

The two material outcomes are clear. If the southern conductor hosts a different mineralogical style of sulphide system, it expands the deposit model across the trend. If it intersects structural or stratigraphic conductors unrelated to the magmatic system, it narrows the hypothesis and redirects focus elsewhere. Each hole consumes capital and time before returning a binary answer. That is the fundamental risk structure of early-stage exploration, and it is the structure you are underwriting if you follow this story.

The 35-km trend as the district-scale frame

Both the BA2601 discovery and the southern conductor sit within the same 35-km ultramafic trend. The inversion programme’s ultimate purpose is to work out which portions of that trend host discrete, testable anomalies rather than continuous background noise.

Loki West and Loki East are additional structural corridors being refined by the same 3D models. That is how the inversion results scale, from a single conductor into a district-level exploration programme with several drill queues feeding off one dataset.

Reading the inversion results for what they are, not what investors hope they are

The central point is simple. The 3D inversions at Loki have done exactly what the technology is designed to do: rank and locate drill targets. The geophysics has performed. What comes next is a drilling test that no inversion can pre-determine.

The upside is real and worth stating plainly. A 1.45 km² untested conductor sitting 1.4 km from a confirmed magmatic sulphide intersection, on a 35-km trend, is a substantive exploration target by any objective measure. BA2601 itself returned a 6 m copper-nickel-cobalt sulphide zone from 254-260 m, including 1 m grading 0.37% Cu, 641 ppm Ni, and 514 ppm Co. Assays for the 0-226 m and 451-498 m intervals remain pending as of September 2026, and the broader Ballarat package spans 1,140 claims across 22,700 hectares, with the Skye Gold Zone under active exploration too.

Copper sulphide intersections from maiden drill programmes carry a wide range in economic significance depending on grade continuity, host geometry, and whether the mineralised interval represents a true vein core or a halo, which is precisely the interpretive question that assay results from the broader BA2601 intervals will need to resolve.

Hold both facts at once: this is the most technically credible next target in the pipeline, and the gap between a geophysical anomaly and an economic deposit is where most early-stage exploration stories end.

The practical read is that the inversion results are already priced into the exploration thesis. Watch what comes after, not the geophysics itself. Three things signal the next material update:

• The drill design announcement for the southern conductor.
• Mobilisation news confirming the campaign is underway.
• The first assay release from the southern conductor hole.

Calibrating expectations correctly at the target-generation stage is what separates investors who anticipate announcements from those who merely react to them.

This article is for informational purposes only and should not be considered financial advice. Investors should conduct their own research and consult with financial professionals before making investment decisions. These statements are speculative and subject to change based on market developments and company performance.