The maximum Li2O grade in those cores was 0.0925%, most was sub...

The maximum Li2O grade in those cores was 0.0925%, most was sub 0.01% Li2O. The reason no one saw any lithium minerals in those cores is because they didn't exist in quantities enough to be visible, except to the absolute keenest eye searching the rock up and down with a lens.

As mentioned before there are spectral contact probes that can be used instead of the eye if identification of lithium minerals is difficult or uncertain or even spectral core loggers where the core can be robotically passed under a scanner which may pick out the lithium mineral spectra if those minerals exist in high enough quantity (I'd need to check). There were many simple and cost efficient tests that could have been done if they were not sure before parading those cores to the market and describing them as significant.

If you are a geologist can you confirm based on the assay data received what category that pegmatite falls in please and why they would have described them as significant.

Eshmun