Ann: IOCG Wedge Holes Provide Exceptional Visual Sulphides, page-17

Hmmm. I don't think that's covellite. I'd say it's tarnished bornite...are they implying supergene enrichment?? Anyway...

According to the reported logs these are the zones with potentially economic Cu grade:

DD21EB0018W1:

808.07-810.03m - 2 metres
828.9-837.5m - 8.6 metres

DD21EB0018W2:

805.4-806.5m - 1.1 metres
816.2-839.0m - 22.8 metres

So it's shaping up as if there's 2 flat-lying mineralized zones: A very narrow upper zone chalcocite mineralisation (1 to 6 metres width) and a lower, wider zone with bornite-chalcopyrite zone (8 to 36 metres width). The barren to low grade zone that separates the 2 mineralized zones is 8 to 20 metres thickness.

The biggest challenges are depth, Cu grade and shape of the mineralisation