As I understand it, Greenbushes has the purest most easily processed hard rock spodumene so far discovered anywhere on earth, akgo. @Sjlasx would be able to give a more knowledgeable summary and, likely, plenty of others too.
cheers
https://discoveryalert.com.au/news/igos-greenbushes-nova-operations-financial-performance-2025/ This exceptional margin performance stems from Greenbushes' advantageous geological characteristics, including high lithium grades and favorable mineralogy that enables efficient processing. The operation's dense media separation technology achieves lithium recovery rates of 75-80%, maximizing resource utilization.
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