Chile's financial regulator had allowed a planned lithium joint venture between SQM and Codelco to proceed without a vote by SQM shareholders.
Apolo is seen as critical for reviving the company’s iron ore capacity in Minas Gerais.
Streaming deal will help SolGold finance feasibility studies, secure permits and later begin construction of the Cascabel copper-gold mine.
Meeting is considered pivotal for the UN body, expected to finalize its decade-long effort to enact regulations by 2025.