Take a close look at the table. Two samples from same location (one metre apart):
ND10 0.0023%Nb
ND11 43%Nb
Could it be ND11 sampled the pictured columbite mineral directly (or at least 80%) producing a 43% Nb value (remembering the mineral columbite contains ~ 55% Nb)The other sample from the same location (ND10) produced a 0.0023% Nb value and may be the whole rock?
How much Columbite is in that pegmatite?, How big is the pegmatite? If they do drill this location we will then know.
Ann: 47.1% Niobium and 9.01% Tantalum identified at North Dam, page-50
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