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Infinity identifies 104 g/t AuEq surface interval at Tanjil Dome

Mining By Maxwell Dee 5 min read

Infinity Mining has reported a 1.2-metre surface channel interval grading 30.20% antimony and 0.46 g/t gold at Tanjil Dome in Victoria. The result strengthens the exploration signal, but drilling is still needed to establish true widths, continuity and economic significance.

  • 1.2m at 30.20% antimony and 0.46 g/t gold for 104.06 g/t AuEq
  • Broader 4.9m interval returned 7.71% antimony and 0.48 g/t gold
  • Results came from 10 trenches and 62 channel intervals over 58.1m
  • Geology shows quartz-vein and hydrothermal replacement styles
  • Maiden drill planning is underway, subject to access and approvals

104 g/t AuEq interval sharpens Tanjil Dome target

Infinity Mining Limited (ASX:IMI) has produced its strongest surface signal yet at the Tanjil Dome gold-antimony prospect, with a 1.2-metre channel interval returning 0.46 g/t gold and 30.20% antimony for a calculated 104.06 g/t gold equivalent. The interval sits inside a broader 4.9 metres at 0.48 g/t gold and 7.71% antimony, equivalent to 26.92 g/t AuEq.

“TTD-002 geological face log and interval strip.”Caption and image © Infinity Mining Limited. From “High-Grade Antimony with Gold at Surface for Tanjil Dome”, 11 Nov 2026.

The result is notable, but its concentration matters. The 1.2-metre high-antimony section contributes approximately 96% of the length-weighted antimony total in the broader TTD-002 composite. These are channel lengths along surface exposures, not true vein widths or drill intercepts.

Surface sampling extends an earlier Victorian exploration story

“Initial trench locations within the broader gold and antimony soil anomalies.”Caption and image © Infinity Mining Limited. From “High-Grade Antimony with Gold at Surface for Tanjil Dome”, 11 Nov 2026.

The assays came from 10 trenches comprising 62 channel intervals over 58.1 metres, testing quartz veins and stibnite-bearing material in highly weathered and altered intrusive rocks. They follow the earlier one-kilometre Tanjil anomaly, which had been identified alongside a separate anomalous trend at Infinity’s Good Hope prospect.

Other results added gold and antimony support beyond TTD-002. TTD-001 returned 1.6 metres at 0.46 g/t gold and 2.23% antimony for 8.11 g/t AuEq, including 0.6 metres at 5.44% antimony. TTD-008 returned 0.6 metres at 1.22 g/t gold and 3.69% antimony for 13.89 g/t AuEq, while TTD-006 delivered five metres at 1.30 g/t gold with only minor antimony.

Two mineralisation styles identified at Tanjil Dome

“Field photographs of rock material, trench exposures, drone overview and channel sampling.”Caption and image © Infinity Mining Limited. From “High-Grade Antimony with Gold at Surface for Tanjil Dome”, 11 Nov 2026.

Infinity and joint-venture partner Mining One Consultants identified at least three discrete quartz-vein exposures within an altered dyke, with field observations suggesting broadly north-south strikes and steep dips. Mining One Geology Manager Stuart Hutchin described both quartz-vein-hosted mineralisation, which the company says shares broad geological similarities with the Sunday Creek deposit about 100 kilometres away, and disseminated to massive stibnite interpreted as hydrothermal replacement within intrusive units.

That second style is potentially important to the exploration model because the antimony is not necessarily confined to narrow quartz veins. The company nevertheless says correlations between exposures remain provisional, while weathering, changing vein orientations and the small sampled area limit conclusions about continuity. The earlier high-grade antimony sampling had also identified stibnite veins and breccias, but the current announcement provides channel assays rather than isolated rock-chip results.

Drilling is the next test, not yet a resource estimate

The joint venture plans to combine the assays with geological mapping, structural measurements and earlier soil results to refine further trenching and maiden drill targets at Tanjil Dome and Good Hope. Drill design and work-plan submissions will progress subject to access and relevant approvals. No drilling results, Mineral Resource or economic assessment have been reported.

“Initial trenches coloured by individual AuEq grades. Trenches TTD-001 to TTD-008.”Caption and image © Infinity Mining Limited. From “High-Grade Antimony with Gold at Surface for Tanjil Dome”, 11 Nov 2026.

AuEq is a comparison metric calculated using a gold price of US$4,000 an ounce, antimony at US$50 a kilogram and assumed recoveries of 85% for gold and 75% for antimony. The company says antimony contributes about 98% of the TTD-002 composite’s calculated AuEq, and no project-specific metallurgical testwork has been completed. The central question now is whether the striking surface chemistry survives the less forgiving tests of width, continuity, depth and metallurgy.

Bottom Line?

The surface signal has strengthened, but maiden drilling must determine whether the standout antimony is repeatable beyond a small exposed interval.

Questions in the middle?

  • Will drilling confirm meaningful true widths and continuity between the clustered surface exposures?
  • Can the quartz-vein and hydrothermal replacement styles be traced into a coherent mineralised system?
  • How will project-specific recovery and metallurgy affect the significance of the AuEq calculations?

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