Hercules Metals Corp BADEF

Possible sequence of geological events

[Retiredgeo]

1) Once upon a time, long ago, on some island out in Pacific ocean a porphyry intrusion came up from depth.
2) It created a stereotypical Copper porphyry deposit.
3) The passage of time dropped the erosion level down to the porphyry and supergene enrichment occurred.
4) The island was accreted to the western edge of the North American continent.
5) The accretion event generated heat which remobilized the Copper within the Porphyry copper deposit creating the hypogene Bornite-Chalcocite? blanket.
6) Before the blanket could significantly alter the Hercules rhyolite buried everything.
7) Another heat event of unknown origin remobilized some of the Silver into veins within the Hercules rhyolite.
8) The passage of time has dropped the erosion level back down to near the porphyry.

If this sequence is correct then the Porphyry is seriously depleted of mobile elements (Cu and Ag).  If a good part of the Copper has been remobilized into a flat blanket on top BONUS!

[CaptainM]

I like the story, but obviously lots of assumptions.  I believe those traces of Biotite and Magnetite in hole 26 add Value and should not be overlooked.   The temperature and alteration in Hole 26 was also described in the NR much closer to Potassic core than what we have seen before.

[CaptainM]

We have 2 targets so far:  Grade Creek and Belmont.  What if one target is the potassic core (Grade Creek) and the other is the enriched zone that is offset and away from it, which would fit the model nicely.   But as one famous porphyry expert noted, no porphyrys are ever the same