Just to complement your efforts @Wack, hole SD010 has already...

Just to complement your efforts @Wack, hole SD010 has already intersected the redrock halo directly around the porphyry and then intersected the albite tourmaline lithocap. These two intersections are identical to those seen directly above the porphyry’s over the hill at Cadia Valley. We just need to locate the core of the porphyry. Following the high grade gold and increasing copper down plunge will show us the way. I also note another poster’s reference to Cowal. It too has a porphyry system under the epithermal system. Epithermals are the vertical extensions of preserved porphyry systems. High grade epithermal lodes usually lead to a high grade porphyry core! IMHO and DYOR!

https://m.youtube.com/watch?v=8r63AjoHqEk&pp=ygUVY29wcGVyIHBvcnBoeXJ5IGNhZGlh