Spark Energy Minerals Inc. has intersected a project-record gallium assay of 114.3 g/t Ga₂O₃ over 2 m from surface in maiden drilling at the Boa Vista target, located within the expansive 91,900-hectare Arapaima Project in Brazil's Lithium Valley.

All five maiden reverse-circulation holes at Boa Vista returned gallium mineralization from surface, followed by deeper rare earth element intervals. Hole ARA-RC-031 yielded a broad rare earth intercept of 28 m at 1,557 ppm TREO, including a 2 m interval grading 3,459 ppm TREO. Three holes also encountered surface scandium, including 22 m at 17.7 g/t Sc₂O₃ in ARA-RC-030 and 10 m at 19.3 g/t Sc₂O₃ in ARA-RC-007.

The initial five-hole program totals 216 m and forms part of an expanded 37-hole, 2,024 m follow-up campaign across the property. Exploration at the Arapaima Project began with a maiden five-hole reverse circulation drilling campaign at the Cruzeta target in December 2025 before extending to maiden drilling at the Boa Vista target. Boa Vista had not been drilled prior to this campaign and was prioritized using geochemical and geological characteristics. The vertical association of near-surface gallium and deeper rare earth mineralization mirrors the pattern observed at the Cruzeta target. The maiden drill pattern has not closed off mineralization to the north, south, east or west, leaving the target open laterally in all directions.

“The project-record gallium assay is a strong start, but the larger takeaway is that Boa Vista gives us a separate mineralized centre within our expansive 91,900-hectare Arapaima Project,” said Dr. Fernando Tallarico, CEO of Spark Energy Minerals Inc. “The repeated pattern of near-surface gallium and deeper rare earth mineralization across all five holes at Boa Vista gives us a clear priority for follow-up.”

Elsewhere in Brazil's Lithium Valley, Sigma Lithium achieved a record 47% EBITDA margin and US$55 million in net revenues at its Grota do Cirilo project.

Spark Energy Minerals plans to conduct step-out drilling in all directions and targeted infill drilling to test the lateral extent and continuity of mineralization at Boa Vista. The company is also evaluating a lower-detection-limit analytical method and potential re-analysis of retained sample pulps for scandium, alongside reporting pending assays from other targets within the Arapaima portfolio.

Read the full announcement: Spark Reports Second Gallium-Rare Earth Discovery in Brazil's Lithium Valley, Led by Project-Record 114.3 g/t Ga2O3