True North Copper Targets Major IOCG Discoveries in Queensland's Chumvale District

December 10, 2025
True North Copper Targets Major IOCG Discoveries in Queensland's Chumvale District
  • Mt Oxide is advancing with three defined copper-cobalt trends, where Apollo and Acanthus show strong geophysical signals reinforcing exploration potential.

  • A north-northwest crustal-scale fault corridor near Marimo hosts a cluster of prospects, with northwest-trending faults truncating the zone and potentially improving odds for large copper-gold discoveries.

  • Earlier drilling at Chumvale South, Big Oak, Gum Creek, and Marimo identified copper-gold signatures, including a 12 m intercept of 0.63% Cu and 0.08 g/t Au from 18 m, with Marimo showing sulfide copper potential and promising Poseidon results.

  • True North Copper is expanding its Discover pillar under the DEVELOP, GROW, DISCOVER plan by identifying multiple IOCG-style copper-gold targets in Chumvale, northwest Queensland, with the aim of pursuing standalone copper discoveries near Cloncurry.

  • The company is refining its Cloncurry exploration strategy, targeting IOCG-style targets at Marimo, Chumvale, and the Salebury system to build a district-scale footprint.

  • Historical soil sampling on Chumvale reveals a large 3 km-long copper anomaly up to 600 m wide at surface, aligning with the Tiger prospect and linking to Rocklands to the north.

  • Chumvale’s consolidated area encompasses the Rocklands and Orphan Shear corridors, about six kilometres west of True North’s Great Australia mine, with geophysical signs and surface copper expressions suggesting IOCG mineralisation similar to Mt Colin and Rocklands.

  • At Mt Oxide, True North identifies three copper-cobalt trends at Aquila, Apollo, and Acanthis, with Apollo and Acanthis exhibiting strong geophysical anomalies comparable to Aquila, near Vero’s substantial resource base.

  • Marimo’s corridor features multiple prospects along a crustal-scale fault system, enhancing Rocklands-style discovery potential.

  • The Chumvale district is viewed as a district-scale setting with substantial untapped IOCG potential, aligning with True North’s strategy to discover large standalone copper-gold systems in a top-tier Queensland space.

  • True North targets a busy 2026 with renewed programs at Chumvale, Marimo, and Salebury, aiming to progress toward self-funding in a robust copper market while pursuing near-term cash flow from Mt Oxide drilling.

  • A new rock-chip sampling program at Marimo and Chumvale, supported by fresh magnetic data and 3D geological models, will lead into a reverse circulation drilling campaign modeled after the Mt Oxide Aquila success.

  • The company plans a 2026 program starting with rock-chip sampling at Marimo and Chumvale, backed by magnetic data and 3D modeling, followed by RC drilling to mirror the Mt Oxide Aquila outcome.

  • Chumvale is highlighted as a district-scale target with potential to consolidate ground across key corridors and form a meaningful regional IOCG footprint in one of Queensland’s most promising zones.

  • Aquila is located near True North’s Vero resource at Mt Oxide, totaling about 15.03 million tonnes at 1.46% copper and notable silver, plus 9.15 million tonnes cobalt at 0.23%.

  • Geological features backing prospectivity include Mitakoodi quartzite, Corella formation, overhanging jasperlite, and crustal-scale north-south and northwest cross-cutting structures that correspond with high-temperature alteration in copper-gold systems.

  • Past shallow drilling at Marimo shows strong copper potential, with Poseidon delivering 16 m at 1.98% Cu from surface and 4 m at 1.02% Cu with 0.16 g/t Au from 94 m, indicating significant sulfide copper indications.

Summary based on 2 sources


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Sources

True North sharpens copper exploration strategy in Queensland

The Sydney Morning Herald • Dec 10, 2025

True North sharpens copper exploration strategy in Queensland

True North sharpens copper exploration strategy in Queensland

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