Ann: Initial metallurgical tests Generate Positive Results, page-100

Mixed Minerals in hard rock lithium mines is a fact of life I'm afraid ...  Are many people here aware that the recognised "best" hard rock lithium deposit in the world (Greenbushes in SW WA) has only 26% Spodumene ?

"...Major minerals and approximate abundances in the Greenbushes pegmatite are quartz 28%, spodumene 26%, albite 23%, potassium feldspar 20%, tourmaline 1%, mica 1% and apatite 0.5%.

Lithium Table 7.2 summarizes the main lithium minerals associated with the economic mineralization at Greenbushes. The main lithium minerals are spodumene (approximately 8% Li2O) and varieties kunzite and hiddenite. Minor to trace minerals include lepidolite mica, and amblygonite and lithiophilite (phosphates). The iron-bearing species hiddenite appears to increase towards the south of the deposit, with the C1 area having the highest proportions. Lithium is strongly leached in the weathering environment and is virtually non-existent in weathered pegmatite. Lithium grade decreases towards the footwall of the high-grade Lithium Zone. The higher lithium grade ore generally consists of 50% quartz and 50% spodumene, having a Li2O grade of around 4 ..."