Prodigy Gold Uses CSIRO Findings to Target Deeper High-Grade Gold at Hyperion
Key Takeaways
- The CSIRO Kick-Start study identified two distinct gold mineralisation stages at Hyperion — Stage 1 native gold in WNW–ESE fault breccias and Stage 2 invisible gold in N-S-trending Seuss lode — each with separate structural hosts and geochemical signatures.
- The Seuss lode antiform plunges 48° toward the south-southwest, providing a direct, actionable down-plunge drill vector that did not exist before this study.
- The existing Scoping Study covers open pit only at 4.2Mt at 1.9g/t Au for 260koz; the CSIRO structural model is the foundational work required before any underground mining study can be designed, which could materially expand the economic case.
- A NTGS co-funded deep diamond hole is currently drilling to an IP anomaly approximately 300m below the current 454koz Mineral Resource, with results expected before end of 2026 — previous drilling returned 10m at 15.9g/t Au at depth.
- Hyperion sits within a broader Prodigy Gold portfolio totalling approximately 1.05Moz across all projects at 1.4g/t Au, with the CSIRO findings also generating potential for additional targets across the wider Tanami North project area.
CSIRO study sharpens Prodigy Gold’s exploration model at Hyperion
Prodigy Gold NL (ASX: PRX) has completed a collaborative research programme with CSIRO, Australia’s national science agency, through the CSIRO Kick-Start programme, following the project’s announcement in December 2025. The study represents the first integrated structural, mineralogical and geochemical investigation of the company’s Hyperion Gold Deposit, located within the Tanami North Project area in the Northern Territory.
The work integrated structural geology, mineralogy, geochemistry and three-dimensional geological modelling to better understand the controls on gold distribution at Hyperion. This matters because Hyperion sits at the centre of Prodigy Gold’s portfolio, carrying a March 2026 Mineral Resource of 9.8Mt at 1.4g/t Au for 454koz Au, comprising 212koz Indicated and 242koz Inferred.
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What the CSIRO study found — key scientific findings
The headline result is the identification of two distinct stages of gold mineralisation, each with different structural hosts and sulphide assemblages:
- Stage 1: High-grade native gold, relatively low sulphide abundance, cobalt- and nickel-rich arsenopyrite and pyrite within fault breccias; the dominant contributor to the WNW–ESE-trending Hyperion and Tethys lodes
- Stage 2: Invisible gold associated with arsenic-rich pyrite and antimony-rich arsenopyrite in fault breccias; the dominant contributor to the N-S-trending Seuss lode, hosted within an approximately 47–53m thick fault breccia zone
- Four extensional vein sets and three shear vein sets were identified; steeply dipping ESE–WNW extensional veins are capable of hosting native gold
- Bedding data indicates an upright antiform plunging 48° toward the south-southwest at Seuss, providing a direct vector for down-plunge drill targeting
Beyond the structural findings, the two mineralisation stages carry distinct geochemical fingerprints. Stage 1 shows elevated cobalt and nickel; Stage 2 shows elevated antimony. These signatures will allow the team to distinguish mineralisation types in future drill samples, a practical benefit that directly reduces uncertainty in exploration targeting.
What this means for future drill targeting
The refined multi-stage model provides new targeting criteria for extensions of known mineralisation along three structural corridors: the E-W Hyperion–Tethys, the N-S Seuss, and the broader Suplejack structural corridor. Drilling will now specifically target mineralisation down-plunge of the defined antiform at Seuss, a direct, actionable output of the study.
CSIRO researchers intend to progress the findings toward a peer-reviewed scientific publication, signalling the rigour of the methodology applied.
Mark Edwards, Managing Director
“The completion of the CSIRO study represents an important step forward in our understanding of Hyperion… The CSIRO study will be used to assist our team design deeper drillholes to target mineralisation that may fit into a future underground mining study of the deposit.”
Why the geology matters to investors
Hyperion is a structurally controlled orogenic gold system, meaning gold is concentrated along specific fault and vein structures rather than distributed broadly through the rock. Understanding precisely which structures host which style of mineralisation is the difference between drilling effectively and drilling blind. Better models mean more targeted holes, and more targeted holes mean lower discovery cost per ounce.
The existing Scoping Study, released May 2026, covers open pit mining only, with a production target of 4.2Mt at 1.9g/t Au for 260koz Au. Underground potential was not included in that study. The CSIRO structural model is the foundational work required before a future underground mining study can be designed, which could materially expand the deposit’s economic case.
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What’s next for Prodigy Gold at Hyperion
An NTGS co-funded deep diamond hole is currently in progress, targeting an IP geophysical anomaly approximately 300m below the currently defined Mineral Resource, with results expected before the end of 2026. Previous drilling returned intercepts including 10m at 15.9g/t Au in hole HYRC24004, reinforcing the case for high-grade underground potential at depth.
The Hyperion deposit sits within a broader portfolio that totals approximately 24Mt at 1.4g/t Au for 1.05Moz across all Prodigy Gold projects.
The Hyperion Mineral Resource by category is summarised below:
| Category | Metal (koz Au) |
|---|---|
| Indicated | 212 |
| Inferred | 242 |
| Total Hyperion | 454 |
Source: ASX announcement, 22 September 2026. Mineral Resource Estimate as at 16 March 2026.
The refined structural framework generated through the CSIRO collaboration will be incorporated into ongoing exploration planning and drill targeting. The company notes the work also generates potential for additional targets within the broader Tanami North project area.
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