scampoco, I haven't seen their latest gold rise prediction system. What's it say? For Sol 1 (plus Sol 12 maiden resource estimate) the gold at today's prices (June '15) is worth $600M or 30% of the total. Copper is the bulk at $1.3B or 65% of the total, with the remainder zinc $56M (3%) and silver $46M (2%).
Copper overwhelmingly and gold to a lesser degree will drive the resource valuation.
As an interesting aside, Sol 1 & 12 ore at today's (depressed) metals prices is worth nearly $2B or $700 per metric tonne. If you want to get excited, go look at the resource report, add up all the potential tonnage from all the PNG exploration licenses, multiply that times 700. It comes to a very, very large figure.
Then if you really want to get crazy, multiply that times the number of other country tenements (Fiji, Tonga, etc) then take that number and double it again to account for the CCZ resources, and you will come up with a number that no sane person will believe. And that doesn't value the intellectual capital nor any potential future seabed mining services revenue.