Sales revenue (Tables)

12 Months Ended

Dec. 31, 2025

Notes and other explanatory information [abstract]

Schedule of net revenues

	12/31/2025		12/31/2024
Gross sales revenue – lithium concentrate		96,101		193,229
Shipping services		9,744		4,962
		105,845		198,191
Provisional price adjustment		4,167		(46,839	)
Total net sales revenue		110,012		151,352

(1) For the year ended December 31, 2025, the amount includes: $14,013 of final price adjustment less $9,846 which includes interest on the pre-payment.