Loose collection of salt flats scattered around the South American Andes
Majority of known global lithium deposits

This was the best glance I could get on my atlas:
Salar de Uyuni to the North (Bolivia)
Salar de Atacama to the West (Chile)
Unlabeled: Salar del Hombre Muerto to the SE-ish (Argentina)

Lithium Mining Companies

Advantage Lithium Corp
AIS Resources
Alba Minerals Ltd.
Argentina Lithium and Energy Corp.
Dajin Resources Corp.
FMC Corp.
Galaxy Resources Ltd.
International Lithium Corp.
Lithium Chile Inc.
Lithium Americas Corp.
Lithium Energi Exploration Inc.
Lithium X Energy Corp.
LSC Lithium Corp.
Millennial Lithium Corp.
Neo Lithium Corp.
NRG Metals Inc.
Orocobre Ltd.
Ultra Lithium Inc.
Wealth Minerals Ltd.

Salted Earth

The Lithium Triangle

This Lithium Hotspot is Getting Hotter

Investors can’t get enough of South America’s Lithium Triangle

Cracking the Lithium Triangle

Battery Hungry World Turns to South America’s Lithium Triangle

Lithium Triangle: South America’s Prospective