https://hotcopper.com.au/threads/ann-goulamina-lithium-project-update-to-dfs.6467639/Basically $978 / t, while the very high spot price at the moment cannot last forever, I'd still say it was very conservative assumption used in DFS.
CC9 Chariot locks in high-potential drill target at Black Mountain, one of the USA's largest lithium landholdings
EMC Everest Metals inks first resource at Mt Edon for nearly 8,000 tonnes with prices at US$1,000+/kg