Expenses by category (Tables)

12 Months Ended

Dec. 31, 2025

Notes and other explanatory information [abstract]

Schedule of cost of goods sold

	12/31/2025			12/31/2024
Direct Industrial processing and mine cost		(55,428	)		(75,026	)
Transportation		(17,756	)		(16,923	)
Royalties (1)		(3,692	)		(5,313	)
Other (2)		(6,430	)		(8,775	)
Depletion / Depreciation		(8,284	)		(13,681	)
Total cost of goods sold		(91,590	)		(119,718	)

⁽¹⁾ Applicable Royalties:

i.) 2.0% ‘Compensação Financeira pela Exploração de Recursos Minerais’ (CFEM), a royalty on mineral production levied by the Brazilian government, payable on the price of minerals extracted from the Lithium Properties.

ii.) A royalty (currently held by LRC LP I, an unrelated party) of 1% of Net Revenues from sales of minerals extracted from the Lithium Properties.

iii.) Brazilian law requires paying landowner’s royalties equal to 50% of the Financial Compensation for the Exploration of Mineral Resources (CFEM).

⁽²⁾ Starting in 2025, the Company began allocating stock-based compensation for certain operational personnel directly to operating costs, totaling $174, in alignment with revised internal cost attribution practices.

Schedule of sales, general and administrative expenses

	12/31/2025			12/31/2024
Salaries and benefits		(9,496	)		(9,701	)
Legal		(4,270	)		(3,023	)
Public company expenses		(2,813	)		(4,093	)
Other		(1,507	)		(4,317	)
Depletion / Depreciation		(96	)		(80	)
Total sales, general and administrative expenses		(18,182	)		(21,214	)