The geology+high grade implications of new presentationI wrote this before coming here, see Goldhunter11 came to similar interpretation on many items: This new presentation by RNC is quite helpful and has not obvious at all info in it. Page 21, and 22 explain it well. The shear zone moved about 80 meters vertically AFTER the sediment layer was laid down. Thus as pics show it is not (in this section shear appears 10 meters wide which they confirm) an intersection of 10 meters, it is an 80x10 meter cross section of the sediment layer smeared, fractured, etc. over the 10 meter wide shear zone.
So sediment layer first, then sheared by A zone, then gold percolates up shear, then gold drops out in contact with iron rich sediment layer especially in the extensional veins inside the shear zone. I had guessed the extensional veins were on borders of shear zone but they are also inside the shear zone see page 21. The gray rectangles are the tunnels that hit the gold (in cross section across the tunnel).
Extensional veins during earthquakes cause drops in pressure that vaporize the liquid causing the gold to be flash deposited in addition to iron chemically dropping out the gold. Page 23 backs that up with pics.
The richest ore is shear+sediment layer+extensional veins. All of pale orange shear zone will be mined/stoped. The bonanza grade can be spread out (not continuous at all) over a 10 X 80 meter rectangle that it 4 KMs long (in A Zone they have not said how far the sediment layer has been sheared at WF zone yet). From what I know, would just mine that 10x80 meter rectangle and get bulk and bonanza at same time. It is a massive amount of tonnage. https://www.rncminerals.com/download/RNC+-+Investor+Presentation+24-Sept-2019-FINAL_TOPRINT.pdf
Looks like the tunnels have only removed 7% of material in the "pay zone" If we were ever so lucky not to be lucky before and entire area there is as rich for stoping as it was for tunneling to set up for stoping, well then 13 times more gold will be found just there.
Lets hope we just had average luck with tunnels hitting gold, if so a mind boggling amount of gold will come out when its stoped. Seems almost to good to be true but possible. However even with some bad luck they should pull out 40,000 ozs of new high grade, which means stoping luck was about 1/10th as good as tunneling luck.