Disputed Sigma Lithium land has 'probable' reserves, study shows

Sigma Lithium, the biggest player in Brazil's booming lithium industry, told regulators late last year it had found likely mineral reserves on two plots of disputed land, about a month after it said they held "no mineral reserves and resources," according to previously unreported regulatory documents.

The documents, which were filed by Sigma with Brazil's mining regulator in November and have not been made public, show the firm had found "probable" mineral reserves on the land. Reuters could not determine at what date that finding was made.