Ring of Fire
The Pacific Ring of Fire has produced more than 249 Moz of gold and 33 billion lb of copper from world-class deposits such as Lihir, Porgera, Vatukoula, Martha, and Kelian. Fiji sits squarely within this fertile arc where active tectonism and volcanism create ideal conditions for high-grade, low-sulphidation gold systems. Kalo Gold’s Vatu Aurum Project occupies one of the least explored segments of this belt — a region combining proven geology with modern infrastructure and stable mining regulation — offering investors exposure to discovery-stage upside in a jurisdiction that already hosts multi-million-ounce gold mines.
Kalo Gold Advantage
Positioned to deliver major discoveries in a proven gold belt:
Epithermal Gold Systems
Intense volcanic and tectonic activity has produced vertically intact low-sulphidation systems rich in pathfinder elements (Se, As, Sb, Hg, Tl).
Prolific Region:
249 Moz Au discovered to date within the same Pacific arc.
District-Scale Control:
367 km² covering the heart of the Nubu Graben, a >30 km-long structural corridor hosting multiple upflow zones.
Drill-Ready Target Zones
More than CAD $30 million has been invested in historical and modern exploration. Data integration and intensive field work (2023-2025) by have identified three large-scale exploration targets:
1. Aurum Prime
The core diatreme–epithermal system and principal discovery area
2. Wainikoro
A newly defined, preserved epithermal centre located ~5 km southwest of Aurum Prime
3. Coqeloa
A high-level epithermal system exhibiting geochemical and alteration features indicative of a deeper porphyry-related source
The 367 km² licence area hosts a vertically preserved volcanic–hydrothermal complex integrating multiple mineralization styles across two principal structural domains — the Nubu Graben and Coqeloa Caldera:
Wainikoro:
A second preserved epithermal system, characterized by silica–clay alteration caps, sinter ridges, and barite–sulphide mineralization over >12 km². The presence of vuggy and bladed quartz textures, hydrothermal breccias, and advanced argillic alteration indicates a vertically intact low-sulphidation environment analogous to Aurum Prime, highlighting strong vertical and lateral continuity across the district.
Coqeloa:
A hybrid epithermal–porphyry system defined by Cu–Mo–Au geochemistry, magnetite-bearing veins, and sericite–chlorite alteration, suggesting proximity to a deeper magmatic source. Coqeloa is interpreted as the upper epithermal level of a larger porphyry-related hydrothermal system.
A Disciplined Growth Plan (2026–2027)
Kalo Gold has ambitions to launch a structured, milestone-driven exploration and gold resource-growth plan designed to advance the Vatu Aurum Project from discovery toward initial resource definition. The program targets drilling, high-resolution geophysics (CSAMT, gravity, UAV magnetics, LiDAR), and expanded trenching across Aurum Prime, Wainikoro, and Coqeloa. This plan positions Kalo to demonstrate the full district-scale potential of one of the few intact diatreme–epithermal gold systems in the Pacific Ring of Fire.
Exploration Implications — Potential Discoveries
Aurum Prime and Wainikoro provide exposure to two complementary deposit styles within two preserved and vertically intact hydrothermal fields identified within the Nubu Graben:
1. Epithermal veins = feeder structures → high-grade gold potential
Quartz–adularia veins, boiling-zone textures, and alteration zonation potentially mirror the Martha Mine (New Zealand; ~7 Moz Au produced), a textbook low-sulphidation system where narrow high-grade shoots developed along deep feeders.
2. Diatreme breccias = fluid conduits → bulk-tonnage potential
Breccia facies, phreatomagmatic textures, and hydrothermal cementation are directly comparable to Kelian (Indonesia; ~5.7 Moz Au produced) and Balatoc (Philippines; >6 Moz Au produced), where gold occurs both disseminated in breccia matrices and concentrated along feeder faults.
Together, these geological analogues illustrate the scale of opportunity at the Vatu Aurum Project: one vertically preserved diatreme–epithermal system with the potential to yield both high-grade veins and large-volume breccia-hosted gold — a dual pathway toward a multi-million-ounce gold discovery.
Geological Setting
Situated within the Nubu Graben back-arc basin, the project hosts intact, low-sulphidation epithermal and diatreme-related systems. Detailed mapping and geophysics (CSAMT) have delineated more than 25 targets within the broader Aurum Epithermal Field, including the geologically distinct and high-grade Qiriyaga Complex — interpreted as a maar-diatreme structure that channels hydrothermal fluids upward through fault intersections. The 367 km² licence area preserves the complete vertical architecture of a gold-bearing hydrothermal complex linking phreatomagmatic (diatreme) and epithermal stages. Explosive magma–water interaction created breccia vents that became fluid conduits; gold-bearing fluids then ascended through these structures forming quartz–adularia veins in the boiling zone—yielding a >400 m vertically continuous mineralized system.
Highlights:
Multiple volcanic calderas within the 367 km² licence area
Structurally controlled upwelling zones along the Nubu Graben
Zoned alteration (kaolinite–illite–smectite ± silica flooding) marking a vertically intact system
Preservation from paleo-surface sinters to deeper feeder conduits
Key Targets
Together, Aurum Prime, Wainikoro, and Coqeloa define a rare, genetically linked gold district. Aurum Prime anchors the diatreme–epithermal core, Wainikoro mirrors its preserved epithermal cap along the same Nubu Graben flexure, and Coqeloa adds a deeper, Cu–Mo–Au–bearing magmatic component. This integrated framework supports both high-grade vein and bulk-tonnage breccia potential within a single district.
Exploration Strategy & Drill Program
The 2026 program will build on Phase 1 successes and targets systematic growth through three parallel tracks:
1. Expansion Drilling
Follow-up of drilling along the Namalau, Loma and Buca Trends and at QC1 and step-outs in the Qiriyaga Complex to test the depth and lateral extent of high-grade mineralization.
2. Vector Refinement
Integration of XRF, TerraSpec and pathfinder halo analysis to define feeder structures at Namalau and Vunisea.
3. Regional Advancement
Systematic trenching and mapping across Wainikoro and Coqeloa to expand the pipeline of drill-ready targets.
Phase 1 Drilling (Completed Q3 2025)
Total: 2552.7 m in 11 holes
Highlights: High grades at QC1; feeder structures confirmed at Namalau; no lost-time injuries throughout operations.
Next Assays: Pending for additional holes at QC2 and QC4.
Historical Investment (1984 – 2023):
> CAD $30 million in drilling, trenching, geophysics, and geochemistry.
Integrated Modelling (2023 – 2025):
Led by Andy Randell, P.Geo. (SGDS Hive), Kalo merged three decades of datasets with new work from September 2024 through November 2025, creating the first unified 3-D district model for the Aurum Epithermal Field.
2024–2025 Work Highlights
Activity | Highlight |
|---|---|
Drilling | 2552.7m in 11 holes across the Qiriyaga Complex and Namalau Trend; assays confirmed high-grade gold at QC1 (22.12 m @ 12.80 g/t Au incl. 10.05 m @ 25.10 g/t Au). |
Trenching & Soils | ~5 000 m total includes both 2024 (~2 450 m) and early 2025 (~2 450 m) and 30,000 soil samples, defining new pathfinder halos at Wainikoro and Coqeloa. |
Spectral & Geochemical Analysis | Portable PPB detectORE™ and TerraSpec® Halo integrated with XRF and SWIR data, delivering real-time gold and alteration mapping. |
Geophysics | 3-D CSAMT (57.6 line km) and UAV magnetics identified 16 high-resistivity diatreme anomalies and refined the QC1-QC5 geometry to ~395 m depth. |
Alteration Mapping | Multi-element vectoring (Se–As–Sb–Hg–Tl–Te–Bi) and illite-crystallinity modelling confirmed vertically continuous epithermal systems across the Nubu Graben. |
Database Modernization | All geological, geochemical, and geophysical datasets integrated in MX Deposit and Leapfrog Geo for live QA/QC, structural analysis, and 3-D vectoring. |
Outcome
This comprehensive reinterpretation now underpins Kalo’s 2026–2027 planned program, guiding the drilling and exploration campaign toward resource delineation at Aurum Prime, Wainikoro, and Coqeloa.
Geological Comparisons
*These analogues are geological references only and do not imply any resource, reserve, or economic comparison.
Operating Environment – Fiji
Fiji hosts a mining culture dating back to 1935, with over 7 Moz of gold produced at Vatukoula and current operations by Lion One and Newmont. The country offers stable governance, clear mining law, 20% corporate tax, and a 5% gold royalty (20% to landowners). All mineral rights are held by the State under the Mining Act (1966), and land access is managed transparently through the iTaukei Land Trust Board (TLTB). Grid power, road access, and supportive communities on Vanua Levu provide an excellent operating base for year-round exploration.
Safety, Sustainability & Community
Kalo operates under a Board-level Safety & Sustainability Committee, chaired by an independent director, ensuring governance aligned with international ESG standards. The Company maintains zero LTIs, uses SiteDocs for digital HSE tracking, and engages landowners through structured consultations with the iTaukei Land Trust Board (TLTB) and local village committees. These partnerships underpin Kalo’s social licence and ensure exploration benefits flow directly to Fijian communities.
