Sigma Lithium Resources CorpBrazilian federal judge suspended all environmental licenses for Sigma's only productive asset, Grota do Cirilo, halting mining activities.

A Brazilian federal judge ordered the immediate suspension of all environmental licenses held by Sigma Mineração S.A., the operating subsidiary of Sigma Lithium Corporation, for the Grota do Cirilo project, halting mining activities under a September 4 preliminary order following a civil action by the Federation of Quilombola Communities of Minas Gerais. The dispute centers on whether the project lies within the area of influence of the Baú Quilombola Community and therefore required free, prior and informed consultation, with the judge citing studies placing the community's territory approximately 2.7 kilometers from the project's directly affected area, within the 8-kilometer presumptive regulatory impact radius under Interministerial Ordinance No. 60/2015. The court ordered independent georeferencing and barred Minas Gerais and its environmental agency from issuing new licenses, amendments or corrective approvals until community-protection requirements are completed. The suspension is material because Grota do Cirilo is Sigma Lithium's only productive asset, with annualized nameplate capacity of approximately 330,000 metric tons of lithium oxide concentrate, and the company is targeting 240,000 metric tons over 12 months and 330,000 metric tons in fiscal 2027. Local reporting said the court-appointed expert would have 45 days to submit the mapping, and the order follows a July operational pause that ended only after an August state agreement with Minas Gerais.
Sigma Lithium Resources CorpBrazilian federal judge suspended all environmental licenses for Sigma's only productive asset, Grota do Cirilo, halting mining activities.
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