I have been having computer issues and this post is now on its 3rd machine.
Thank goodness for cut and paste...
I did get carried away, as usual, in the first text part - snipped. But given the hassles I'll leave it at that. Apologies
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which may illustrate these concepts.
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Note how the Hedenquist model shows the enargite zone which is present at Cascada as part of a large system.
One aspect I didn't mention is that different metals and alteration occur at different levels in the system. They also form recognisable patterns that, like moss on trees in north america, can be used as a rough guide to where different parts of the system may be. The NIR system mentioned in the quarterly does this where only a select few highly trained geologists could pick the same patterns. Not easy - I failed in Mexico.
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Basically the same as Hedenquist's model but shows the drilling towards the purple targets (suspected and elusive at these depths).
Note this is a cartoon section but the actual intrusive porphyry is a
3 dimensional irregular body. I have shown the drill holes above the porphyry but this may not be the case if it is way off section (that is 100s to 1000+m into our out of the section plane).
These things can be huge and occur in multiple bodies [I read recently the Oyu Tolgoi system, in Mongolia, was over 20 Kms long - not continuous but multiple large to huge deposits along the trend]
Pirate I hope the above gives you some idea of the large systems AZS and Rio are chasing at Promontorio and at depth at Alacran as Haplo and others are posting.
Thanks for asking your question Pirate it helped generate a lot of interesting Posts.
Good Night and GLTAH.
