Teck has acquired a 6.89% ownership of the junior explorer.
Three projects were already announced for Oman, Saudi Arabia, and the United Arab Emirates.
The partnership between Codelco and SQM is a major component of Boric's plan to boost the state role in Chile's production of lithium.
Investors will keenly scrutinize CEO Duncan Wanblad on Thursday as he gives an update on the miner's strategy.
