From recollection the grabs were of rock they actually collected as against 'stream samples'. Grabs can be selectively taken - you might see something that you like and just pick it up. I can't recall how the grabs were selected by GPP, but from recollection you could see boulders near the trenches and they looked quite inviting at the time (noting a lot of weathering in the trenches so the grabs in effect were not initially 'geologically formed' from that trench location IMO. I think I commented as such at the time. I just thought I would highlight this sentence in this link from another lithium hopeful on their grabs and leave it at that -
https://www.monteromining.com/new-2...lts-from-the-soris-lithium-project-in-namibia:
"
The samples are selective and not necessarily representative of the mineralization hosted in the pegmatites on the property."
The objective of the grabs is to see if Li20 is present. The objective of drilling is to work out where the grabs might come from in a deposit sense since geological events can cause 'small rocks' to move from initial location - simple example is a rock falling down the mountain ends up at a different place to where it came from. Yes I know stupid example but the VB talking.
The fact the grabs were at surface and immediately below was no physical pegmatite at hole 6 - and severe weathering at surface as well - suggests the grabs came from a 'nearby' geological location and ended up where they were by way of movement (possibly from the area around hole 3, so hole 7 is going to be the interesting hole here since there they did encounter pegmatite around there so the question is where is the surface outcrop?)).
The other way you might get a higher grab sample at surface is through taking a grab of a aspect of the surface where the weathering leads to a condensation of mineral (i.e. different soil colouring in one spot to surrounds but like I said I don't think the grabs were 'stream sediments of soil').
Before anyone asks, Competent Person sign off is done on grabs to say the grabs were taken from that exact location (i.e. that is no mischief has taken place for the conspiracy theorists out there)
All IMO IMO IMO IMO