High grade zone8 Sep 2020 09:19
The High Grade Zone is a 'massive sulphide' structure , the gold grades within it are in the quartz- chalcopyrites, from the web site these grades are announced as 5g/t at higher level, 3g/t at middle level and 1.5g/t lower level.
From published dimensions I've worked out there is 2.4m oz in the High Grade Zone. This should increase with new figures published.
The brokers figures include an average grade of 6.4g/t and a specific gravity of 3.2, both to my mind look far too high and they produced a figure of 4.2m oz.
The Breccias surrounding the High grade work out at 7.2m oz at 2g/t.
The new zone could contain 1m oz looking at the cross sections, so 2.4 + 7.2 + 1 = 10.6m oz plus the unannounced crescent so the initial MRE should be way over 10 using published figures and maybe closer to 15 with the brokers.
The HGZ however is a sulphide zone this is where most of all the other minerals are found i.e. copper,cobalt,lead,nickel,
iron,molybdenum, bismuth and others. All of these are sulphides as chalcopyrites are copper iron sulphides.
There are a further 3 main groups classed in these sulphides i.e. Tellurides (gold and silver) ,Arsenides and one other.
With the gold coming from 2 sources ie quartz-chalcopyrites and Tellurides it can only be an inferred estimate until mining commences and gives a definitive answer.
The breccias being mainly chalcopyrites should have a more accurate estimate.
Any figures for the open at depth can only be an inferred MRE