@pirra96, Thanks for your contribution, however the facts quoted...

@pirra96, Thanks for your contribution, however the facts quoted are not accurate.
If you’ve just got zinnwaldite then L-max
If you’ve got lepidolite then L-max
If you’ve got polylithionite then L-max
If you’ve got trilithionite then L-max
If you've got Amblygonite or Montebraisite - PLP have a tech for that too
If you've got lithium muscovite or muscovite with other lithium mica's - it will be too low grade to process

If you have spodumene, there are standard recovery methods that have been around for decades i.e. sell a spodumene concentrate.
If you’ve got spodumene with lepidolite then standard concentration/ beneficiation methods exist. Make a spodumene concentrate - sell it, then process the lepidolite using L-max.

Sileach may work, although this is not proven to the level L-max is.