Not a geo but do know the lithium system of the northern...

Not a geo but do know the lithium system of the northern neighbours is running north east. According to DKO ann they say it then fans out at their end. Imagine the MPJ aero mags might have located something similar at top of our southern tenement. But only a guess.

For an idea of an extensive lithium-tantalum bearing pegmatitic dyke swarm, here's DKO's
along with drilling cross sections showing the pegmatite outcrops...

So clearly such systems are much more extensive underground, beyond visible pegmatitic outcrops. In fact, it's a regular swarm of dykes!