Hydrothermal enrichment of lithium in intracaldera illitebearing ...
Initially hot (up to ~300°C) ( 5, 8, 59, 60) intracaldera resurgentrelated hydrothermal fluids lateral to the deposit provided the heat and Li mass necessary to alter the Mgsmectite to Liillite at ~200° to 300°C and further drive up the concentration of Li in the highgrade zone.