We also have the tantalum ore which is yet to be factored in. Seems tantaum ore is about UD$110/kg for 30% Ta2O5 content ore ....
"Tantalum intersections included 15m at 494ppm Ta2O5from 50m in PDRC118"
Will need on site concentration before shipping (as will the Lepidolite if sold).
Even so, Tantalum seems to be a very high value product.
https://www.metalary.com/tantalum-price/