RE: Breccias6 May 2020 10:00
Hi launder,
Yes that's my limited understanding of it anyway. I found this article online that explains about IRGS systems and the differences with other types of deposits.
https://www.sciencedirect.com/science/article/pii/S1674987115000808
There's a very interesting paragraph about Telfer in there.
'Telfer lies in a thick carbonate-bearing stratigraphy with units contrasting in rheology in the roof zone of a regional anticlinorium, again with the first-mined, relatively flat-dipping ore zone fortuitously adjacent to the present land surface'
So we know Havieron, Scallywag and all the other targets lie in the same 'carbonate-bearing stratigraphy', and I guess they would all have been subject to the same mineralising events back millions of year ago. The only difference with Telfer as it says above is that 'the first-mined, relatively flat-dipping ore zone fortuitously adjacent to the present land surface'
Therefore Telfer was only discovered because there was outcropping of the ore that was discovered easily. So we can assume that there will be other Telfer's in the region that are completely covered and we seem to have discovered the first one at Havieron.
Paddy