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Mombak

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Summary

Mombak is developing an Enhanced Rock Weathering (ERW) solution that accelerates the natural carbon cycle by spreading finely ground feedstock rock on agricultural soils. This process captures atmospheric CO₂ as the rock dissolves, forming stable bicarbonates that are eventually transported to oceans for long-term storage. In parallel, the application improves soil pH, nutrient availability, and crop productivity, generating tangible agronomic co-benefits. Mombak sources rock responsibly, applies it through farmer partnerships, and leverages rigorous MRV protocols; including soil sampling, remote sensing, and geochemical modeling—to ensure transparent, science-based carbon removal at scale.

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Projects

Project CajueiroThis project applies Enhanced Rock Weathering (ERW) to commercial agricultural fields at Fazenda Cajueiro in Brazil. Finely ground basalt, certified as a soil remineralizer by Brazil’s Ministry of Agriculture, is applied to commercial agricultural fields using standard farm equipment. As the basalt weathers in soil, it releases calcium and magnesium that react with atmospheric CO₂ to form dissolved bicarbonate, which is transported through drainage pathways for long-term carbon storage. Carbon removal is quantified using direct, soil-based measurements supported by field controls and accredited laboratory analysis.

BRA

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Buffer pool

Isometric maintains a buffer pool of Credits for Mombak, to help protect against uncertainty in storage, and the possibility of reversals.Learn more about buffer pools

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