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Transaction

Mafix

Terms

Announced
20 Aug 2026
Instrument
Equity
Amount
US$5.40m

Parties

Project developer
Mafix
Recipient type
Technology company
Country
United States (California - Stanford University spinout)
Capital providers
Capital providers and the amount counted for each
PartyRoleAmountBasis
Azolla VenturesLead investorUS$1.08mEstimated: an even share, 1 of 5
CounteractInvestorUS$1.08mEstimated: an even share, 1 of 5
Astera InstituteInvestorUS$1.08mEstimated: an even share, 1 of 5
Plug and Play VenturesInvestorUS$1.08mEstimated: an even share, 1 of 5
Impact Science VenturesInvestorUS$1.08mEstimated: an even share, 1 of 5

Carbon

Pathway
Enhanced rock weathering
Project type as recorded
Enhanced rock weathering (ERW) - CO2-removing silicon fertiliser

What happened

Stanford spin-out commercialising a mineral conversion process that uses idle cement kilns to turn silicate rocks into a form that weathers rapidly - as fast as a single growing season. Sold as a plant-available silicon fertiliser, with CO2 removal via conversion to stable bicarbonate. Proceeds fund scaling to at least 1,000 tonnes of product and a move from small-plot to larger field trials. CEO/co-founder: Jade Marcus.

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