Hi GM, That's a good comment. I have uploaded an image that i...

Hi GM,

That's a good comment.

I have uploaded an image that i believe represents the metallurgical formation characteristics of a porphyry copper system. The different colours in the mushroom represent metals shells. The black arrows represent the surface of the earth.

The images that the black arrows point to represent what metals you will find at surface depending on how far away you are to the copper shell

So if you are close to the copper you should see a lot of Moly in the centre surrounded by a lot of bismuth as a halo. My limited understanding is that Moly and bismuth are good surface indicators because they are heavy metals and don't migrate.