Looks like the cobalt did not go farhttps://tinypic.com/r/29cm1lg/9 This link is also to a screen capture from RNC Dumont feasibility study. It captures the transformation of pentlandite to awaruite, as serpentinization progresses.
Looks very much to me that the nucleation of awaruite grains occurs at ground zero, inside pentlandite mineral areas. And that is where the cobalt is likely to be found: as a composite grain hosted within the awaruite.
The implication of this is that FPX has mis-identified some of the cobalt hosting awaruite. This same mistake was made in the previous paper I posted, where the mistake was only noticed after scanning electron imaging and differential optical reflectivity was used.
Decar just might not be devoid of cobalt credits, after all.