New Ree (info) discovered, page-4

This is the only reference I could find in a 2017 presentation (not sure about that unknown mineral) - it refers to recovering additional by-products during the refining process , namely : Lithium, Scandium, Zirconium and Hydrogen Fluoride, and maybe other elements in small amounts.

"Shenghe now a 12.5%shareholder in GMEL, commenced technical cooperation to enhance the project and align with down steam processing
Utilising access to technology to recover addition products –targeting Li, Sc, Zr, Hf,"

Cheers and good luck!
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