Ahhh yes, very true. Interesting. It looks as if the due...

Ahhh yes, very true. Interesting.

It looks as if the due diligence was performed on the elevated outcrops which perhaps have some pegmatic extrusions (maybe this is why the initial DD was reported as a Spod mineralisation as there was no elluvial cover to interfere with rock chips etc), whereas all the samples on the low lying areas are covered and weathered / border zone peg samples.

I think their inferred pegmatite zone looks about right.