RE:@olr on NR"Recent research suggests that synsedimentary gold trapped in the structure of diagenetic arsenian pyrite in reduced carbonaceous facies of continental margin sedimentary basins is an ideal source of gold for many orogenic and Carlin-style gold deposits." -
Australasian Institute of Mining and Metallurgy
https://www.ausimm.com/publications/conference-proceedings/pacrim-2015/orogenic-gold-deposits---a-two-stage-process-of-gold-enrichment/
So, is this analogous to De Grey, or is it something different?
In any case, if it applies across 10k square kilometers or even fractionally thereof, "district scale" does not come close to describing the holdings here if economic.