Historic Samples Reveal 70 ppb Gold and Key IRGS Elements at Tanjil Bren
Infinity Mining’s re-assay of historic stream sediment samples at its Tanjil Bren Project reveals elevated gold and pathfinder elements, highlighting promising intrusion-related gold system signatures.
- Re-assay of 1981 samples shows elevated gold up to 70 ppb
- 34 of 95 samples exceed anomalous gold threshold of 20 ppb
- Gold pathfinder elements Bi, Sn, W, Pb, Sb align with IRGS signatures
- Three priority IRGS targets identified for follow-up exploration
- Project geology and geochemistry comparable to nearby Sunday Creek gold system
Historic Samples Revisited
Infinity Mining Limited (ASX – IMI) has breathed new life into its Tanjil Bren Project in eastern Victoria by re-assaying stream sediment samples originally collected in 1981. Using modern, highly sensitive analytical techniques, the company detected elevated gold concentrations and a suite of pathfinder elements that are consistent with intrusion-related gold system (IRGS) mineralisation. This approach leverages historical data with contemporary technology to sharpen exploration focus.
Geochemical Signatures Point to IRGS Potential
Out of 95 samples re-analysed, 34 returned gold values above 20 parts per billion (ppb), with a peak of 70 ppb in sample BBS050. Alongside gold, elevated levels of bismuth, tin, tungsten, lead, and antimony were identified; elements typically associated with IRGS deposits. These geochemical fingerprints are particularly compelling given their spatial correlation with intrusive granodiorite contacts and structural corridors within the project area.
Strategic Location and Geological Context
The Tanjil Bren Project lies approximately 95 kilometres southeast of Southern Cross Gold’s Sunday Creek Gold Project, a well-known IRGS deposit with a significant exploration target of 1.7 to 2.6 million ounces of gold. Both projects share a similar Devonian-aged geological setting within Victoria’s Melbourne Zone, characterised by granitic intrusions and hornfelsed sedimentary rocks. This regional similarity bolsters the prospectivity of Infinity Mining’s tenements.
Defining Priority Targets
The re-assay results have delineated three key IRGS targets for further investigation. These include the standout sample BBS050 near the contact of the Tanjil Granodiorite, and samples BBS003 and BBS095 showing elevated lead and antimony adjacent to granodiorite margins. A third target, BBS071, shows moderate gold but lacks supporting pathfinder anomalies, placing it lower on the priority list. These targets will undergo detailed geochemical infill sampling, structural mapping, and potentially geophysical surveys and drilling.
Next Steps and Market Implications
Infinity Mining’s Managing Director Joe Phillips emphasised the significance of these findings, noting that the results validate the IRGS exploration model at Tanjil Bren and provide a clear pathway for ground-based follow-up. The company’s methodical approach to integrating historical data with modern assays exemplifies efficient exploration strategy, potentially accelerating the discovery timeline. Investors will be watching closely as Infinity advances these targets towards drilling and resource definition.
Bottom Line?
Infinity Mining’s historic data revival sets the stage for a focused IRGS exploration campaign with promising early signals.
Questions in the middle?
- Will follow-up drilling confirm economically viable gold mineralisation at Tanjil Bren?
- How closely will the Tanjil Bren IRGS system resemble the high-grade Sunday Creek deposit?
- What timeline and budget will Infinity allocate to advancing these newly defined targets?
