The average width of orogenic gold deposits can vary significantly depending on the geological setting, structural complexity, and host rock, but here’s a general breakdown:
Typical Width Ranges for Orogenic Gold Deposits:
Deposit Type
Typical Width
1 Narrow vein systems
0.5 – 5 m
2 Moderate shear zones
5 – 30 m
3 Broad shear zones / pipe-like systems
50 – 150+ m
Australian Examples:•Fosterville (VIC): 2–5 m wide high-grade quartz veins (narrow-style)
•Stawell (VIC): 10–30 m mineralized zones
•Gruyere (WA): ~100–190 m wide shear zone
•McPhillamys (NSW): ~250 m wide mineralized corridor of
•Mount Wright (QLD): 60–200 m vertical breccia pipe
Summary:
•Most orogenic gold deposits globally range between 5–30 m wide, especially in classic greenstone belt settings.
•However, large-scale Australian systems like Gruyere, McPhillamys, and Mt Wright show that 75–150 m widths are not uncommon where favorable structural and lithological conditions exist.
So in context, Koonenberry’s Enmore mineralised zone (~75 m true width) is significantly wider than average and compares well to major bulk-tonnage orogenic systems.
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