Ann: L-Max Pilot Plant Development Commenced, page-8

I think the most likely is indicated on 11Sep18 release

"Summary: Multiple lithium mica pegmatites confirmed at Youanmi"

But I get your vibe, why should it be confidential if Youanmi is known associate that LPD has stake in?

How about left field and say West Africa???

Hasnt Desert Lion Energy sent large shipment to a Chinese "lepidolite converter" some 6 months or so ago?

and they just released Maiden Resource

"The Rubicon Main pegmatite (Figure 1) consists of two ellipsoidal well zoned, Li-mineralised bodies developed around two quartz cores and surrounded by a zone of quartz-feldspathic pegmatite. At Rubicon, the main lithium minerals present are lepidolite and petalite. Historical mining has also produced waste dumps and slimes dumps that contain lithium mineralisation predominantly hosted in lepidolite, with minor petalite and tantalite."