RE: Historic HD1 assay data23 Sep 2025 23:33
Even though gold wasn’t assayed, HD-1 shows a continuous halo of gold-pathfinder elements (arsenic, antimony, bismuth, tellurium, mercury, thallium, plus copper, lead, zinc and silver) from about 43 m right down to 616 m (end-of-hole).
That means the hole stayed in an anomalous geochemical zone for virtually its entire length. This is exactly what you’d expect if drilling clipped the outer shell of a gold system inside the Juno licence.
So while no gold numbers are in the file, the chemistry strongly suggests that gold could already be present in the core — or that the main ore zone lies just below where drilling stopped.
Why it could be a big gold dome
• Multi-element halo: HD-1 has the full suite of pathfinder elements (As, Sb, Bi, Te, Mo/W, Hg/Tl) through ~600 m of core. That’s not a small “spike”; it’s a continuous shell — what you’d expect around a big mineralised intrusion.
• Alteration overprints: The chemistry also shows changes in rock composition (iron oxides, potash, sodium, calcium) that map out a large-scale hydrothermal system. This is like seeing the “heat halo” around a buried dome.
• End-of-hole still anomalous: The hole never exited the system — it was still running hot at 616 m, which implies the centre (the “engine” of the dome) is deeper or offset.
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How big could it be?
• In known IRGS camps (like Fort Knox in Alaska or Kidston in Queensland), the gold orebody sits inside or around a felsic intrusive dome, and the pathfinders form a carapace above/around it.
• The size of the halo in HD-1 (over half a kilometre thick) is in line with large intrusive systems. That doesn’t guarantee a gold deposit — but it says the plumbing system is the right scale for one.
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What it means for Juno
• HD-1 may well have clipped the outer flanks of a large dome-like intrusive.
• The gold itself could be in the dome’s core or in structurally trapped zones around its margins.
• If that’s the case, then yes — you could be looking at a big gold dome system sitting under Juno.