Ann: Initial metallurgical tests Generate Positive Results, page-151

You were trying to give the impression that 27% spodumene in Greenbush's ore is equivalent to spodumene being 27% of the recoverable lithium mineral (after grinding and floatation) in the Earl Grey deposit (at depth).

The percentage of Li2O in spodumene is 8.03% as I've previously calculated here.

https://hotcopper.com.au/threads/an...882583/page-102?post_id=18967224#.WH27ImetTtQ

The 27% spodumene grade at Greenbush is equivalent to a Li2O grade of 27% x 0.0803 = 2.16%. This is the mineral spodumene's contribution to the Li2O global grade at the Greenbush deposit

The head grade of the assay in the test for the deep holes was 2.11% Li2O of which 27% is represented by the mineral species spodumene (or 2.11% x 0.27 = 0.57%).

So the spodumene grade of the "deep" holes at Earl Grey (if this calculation is correct) is 0.57%/0.0803 = 7%

7% at Earl Grey (deeps) as opposed to 27% at Greenbushes. Esh