5 largest lithium-producing countries in the world were:

1. Australia:
Australia has consistently been the largest lithium producer globally. The Greenbushes lithium mine in Western Australia is one of the world's largest and most significant lithium deposits.

2. Chile:
Chile possesses vast reserves of lithium, mainly located in the Salar de Atacama. The country's lithium production primarily comes from brine operations, where lithium-rich brine is extracted from salt flats and evaporated to obtain lithium carbonate.

3. China:
China has been rapidly increasing its lithium production, both from domestic sources and through investments in lithium projects abroad. The country's lithium production comes from both lithium-rich brines and hard rock mining.

4. Argentina:
Argentina's lithium production is centered in the Andes Mountains, particularly in the Salinas Grandes and Hombre Muerto salt flats. Similar to Chile, Argentina's lithium production is mainly brine-based.
5. Zimbabwe:
Zimbabwe has been expanding its lithium production, driven by the Arcadia Lithium Project. The country's lithium resources are found in pegmatite deposits, a type of hard rock mineralization.