42 published companies work on Mineralization as their primary pathway (as of 2026-11-04). The full directory has every pathway; the data page has the files.
42companies
18countries
19in Europe
35Active
1Moderate
1Suspect
5Likely dead
Status is estimated from public signals (news, registry activity, job postings, web presence, funding) and re-evaluated regularly. Active recent signals of activity Moderate some signals, limited recent evidence Suspect few or no recent signals Likely dead no detectable activity, which may be wrong
Size: Company size classes follow the EU SME staff thresholds (micro under 10, small 10 to 49, medium 50 to 249, large 250 and more), derived from LinkedIn size bands; exact headcounts are not published.
| Company | Pathway | Method | Country | Status | Size |
|---|---|---|---|---|---|
| 44.01 CDIDissolves captured CO2 in water and injects it into peridotite rock formations deep underground, where it mineralizes into stable carbonate… | Mineralization | Oman | Active | Medium (50 to 249) | |
| AdaptavateManufactures carbon-negative wallboard by combining ligno-cellulosic agricultural waste and biochar with calcium carbonate minerals that… | Mineralization | Mineralization (Other) | United Kingdom | Active | Small (10 to 49) |
| AndesApplies beneficial microorganisms with crop seeds that accelerate silicate weathering and carbonate precipitation in the root zone,… | Mineralization | Mineralization (Other) | United States | Active | Small (10 to 49) |
| AnvilDirect air mineralization using alkaline-bearing ores in a proprietary low-energy reactor to form durable solid carbonates stored on-site. | Mineralization | Mineralization (Other) | United States | Active | Micro (under 10) |
| ArcaAccelerates carbon mineralization in ultramafic mine tailings via smart churning rovers and microwave-based mineral activation, permanently… | Mineralization | Mineralization (Other) | Canada | Active | Small (10 to 49) |
| Aspiring MaterialsUses a patented acid digestion + electrolysis process to convert olivine rock into magnesium hydroxide (which captures CO2 to form stable… | Mineralization | New Zealand | Active | Micro (under 10) | |
| BAIE MineralsEx-situ carbon mineralization via processing (heating, acid leaching, surface-area enhancement) of asbestos/ultramafic mine tailings to… | Mineralization | Mineralization (Other) | Canada | Active | Micro (under 10) |
| Bloomineral CDIUses macroalgae-driven biomineralization in open seawater systems with alkaline industrial waste to convert atmospheric CO2 into… | Mineralization | Ocean Alkalinity Enhancement | France | Active | Small (10 to 49) |
| Blue PlanetCaptures CO2 from flue gas or other sources and mineralizes it with calcium from waste streams (steel slag, cement kiln dust, recycled… | Mineralization | Mineralization (Other) | United States | Active | Small (10 to 49) |
| Blue Skies MineralsReacts captured CO2 with mine tailings plus additives to produce a cementitious carbonated mixture that permanently stores carbon while… | Mineralization | Germany | Active | Micro (under 10) | |
| C-CreteC-Crete makes a Portland-cement-free concrete binder from non-carbonate rocks (granite, basalt, zeolite) that absorbs atmospheric CO2 via… | Mineralization | Mineralization (Other) | United States | Active | Micro (under 10) |
| Cambridge Carbon CaptureTwo-stage ex-situ mineralisation process reacting magnesium hydroxide with CO2 from flue gas or DAC to form stable magnesium carbonate plus… | Mineralization | United Kingdom | Moderate | ||
| CarbfixDissolves CO2 in water and injects the solution into basaltic subsurface where natural reactions convert it to stable carbonate minerals. | Mineralization | Carbon Mineralization | Iceland | Active | Medium (50 to 249) |
| CarbiCreteReplaces 100% of portland cement in concrete blocks/pavers with EAF steel slag, which is cured with captured CO2 to form calcium carbonate,… | Mineralization | Mineralization (Other) | Canada | Active | Small (10 to 49) |
| Carbon LimitPowder additive (blend of active minerals + reactive catalyst) added to concrete mixes that causes the finished concrete to absorb… | Mineralization | United States | Active | Micro (under 10) | |
| Carbon To StoneReactive crystallization that mineralizes captured CO2 with alkaline industrial waste streams (slag, dross, tailings) into solid carbonates… | Mineralization | DAC (Liquid Solvent) | United States | Active | Micro (under 10) |
| Carbon8 Systems LimitedUsed patented Accelerated Carbonation Technology (ACT) in a modular CO₂ntainer skid to capture flue-gas CO2 and mineralize it into… | Mineralization | United Kingdom | Active | Small (10 to 49) | |
| CarbonaideEx-situ CO₂ curing process that mineralizes biogenic CO₂ into carbonate minerals within precast concrete during production. | Mineralization | Mineralization (Other) | Finland | Active | Small (10 to 49) |
| CarbonCureInjects captured CO2 into fresh ready-mix concrete where it instantly mineralizes and becomes permanently embedded, also enabling reduced… | Mineralization | Carbon Utilization | Canada | Active | Medium (50 to 249) |
| CarbonwayTech-agnostic project developer that captures biogenic CO2 from biomethanization plants and mineralizes it in construction/backfill… | Mineralization | Mineralization (Other) | France | Active | Micro (under 10) |
| CarborokProprietary carbonation reactors that accelerate mineralization of biogenic CO2 into recycled concrete aggregates for durable storage. | Mineralization | Mineralization (Other) | France | Active | |
| CealElectrochemical cell installed on seawater-cooled power plants that applies a gentle current to crystallize dissolved calcium and carbon as… | Mineralization | Ocean Alkalinity Enhancement | Israel | Active | Micro (under 10) |
| Cella Mineral Storage CDIDissolves captured CO2 in water and injects it into basaltic formations in Kenya's Rift Valley for permanent in-situ mineralization. | Mineralization | Mineralization (Other) | United States | Active | Small (10 to 49) |
| Co-reactive CDIContinuous ex-situ CO2 mineralization that reacts captured CO2 with olivine or steel slags (EAF/BOF) to produce CO2-negative supplementary… | Mineralization | Enhanced Rock Weathering | Germany | Active | Small (10 to 49) |
| Cquestr8Reactor-based accelerated weathering of magnesium-rich silicates to lock concentrated industrial CO2 into stable carbonates and ocean… | Mineralization | Mineralization (Other) | United Kingdom | Likely dead | |
| DecahydronInjects supersaturated CO2 into ultramafic rock to simultaneously mineralize the CO2 into stone and displace/extract naturally occurring… | Mineralization | Ireland | Active | Micro (under 10) | |
| EDAC LabsElectrochemical salt-splitting cell ("electrosynthesizer") that produces acid (to leach metals from mine tailings) and base (to capture… | Mineralization | DAC (Liquid Solvent) | United States | Likely dead | Micro (under 10) |
| ExterraUses a proprietary hydrometallurgical LOW™ process to extract reactive metal oxides from asbestos mine tailings, and a ROC™ process that… | Mineralization | Mineralization (Other) | Canada | Active | Small (10 to 49) |
| Forge MineralsLow-energy continuous reactor that converts waste CO2 into high-purity carbonate minerals (starting with magnesium carbonate) for use in… | Mineralization | Mineralization (Other) | United Kingdom | Active | Micro (under 10) |
| KarbonetiqSurficial mineralization: crushes alkaline industrial residues (slags, ash) and cycles them through passive aeration reactors so… | Mineralization | Mineralization (Other) | United States | Active | Small (10 to 49) |
| LightNET Carbon CaptureEx-situ accelerated CO2 mineralization using nanotechnology-enhanced materials (CO2atings coating mortars and CO2rallite ceramics) that fix… | Mineralization | Mineralization (Other) | Spain | Suspect | Micro (under 10) |
| NeustarkCaptures biogenic CO2 from biogas plants and injects it into demolished concrete aggregate, permanently binding it via accelerated… | Mineralization | Mineralization (Other) | Switzerland | Active | Small (10 to 49) |
| O.C.O TechnologyAccelerated Carbonation Technology (ACT) reacts CO2 with alkaline waste residues (APCr, ashes) to produce permanently carbonated… | Mineralization | Mineralization (Other) | United Kingdom | Active | Medium (50 to 249) |
| PaebblPaebbl accelerates natural carbon mineralization by reacting captured CO2 with crushed olivine to produce a silicon-rich magnesium… | Mineralization | Mineralization (Other) | Netherlands | Active | Medium (50 to 249) |
| PartannaProduces a carbon-negative Portland-cement alternative using magnesium compounds from desalination brine and steel slag, curing at ambient… | Mineralization | Mineralization (Other) | Bahamas | Likely dead | Small (10 to 49) |
| Rockburst TechnologiesUses pressurized/transcritical CO₂ to fracture mining ore from within, cutting comminution energy while mineralizing CO₂ into tailings as… | Mineralization | Mineralization (Other) | Canada | Active | Micro (under 10) |
| Sequestra CDIAccelerated ex-situ carbonation of alkaline industrial residues (steel slag, biomass ash, incineration ash, demolition debris) in modular… | Mineralization | Austria | Active | Small (10 to 49) | |
| Tierra FoodsAgroforestry using oxalogenic trees (ramón, English Oak) that sequester atmospheric CO2 as stable soil calcium carbonate via the… | Mineralization | Mineralization (Other) | United Kingdom | Likely dead | Micro (under 10) |
| TravertineElectrochemical process that upcycles sulfate waste (e.g. phosphogypsum, mine tailings) while absorbing CO2 from air into stable… | Mineralization | Enhanced Rock Weathering | United States | Active | Small (10 to 49) |
| Yuanchu TechnologyReacts CO2 (from flue gas or air) with calcium-rich industrial solid wastes and silicate ores via a chemical-looping/ammonia-mediated… | Mineralization | Mineralization (Other) | China | Likely dead | |
| ZEN Carbon CDIInjects CO₂ into wet ready-mix concrete where it reacts to form nano-scale CaCO₃ polymorphs, permanently storing carbon and allowing cement… | Mineralization | Mineralization (Construction) | Kenya | Active | Micro (under 10) |
| ZS2Manufactures magnesium-oxide cement building products (boards, panels, sheathing, tiles) that mineralize CO2, and is developing a… | Mineralization | Mineralization (Other) | Canada | Active | Small (10 to 49) |
No company matches these filters.
AI-maintained, may contain errors. The seed was Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Descriptions, pathway, status and size class are generated and refreshed by CaptainDrawdown from public signals (news, registries, press releases, web search) and are estimates, not verified facts. Companies marked CDI are portfolio companies of the Carbon Drawdown Initiative. Buyers, academia and companies whose only pathway is afforestation are not published. Corrections and missing companies: info@carbon-drawdown.de. The same data as CSV, JSON and API, licence CC BY-NC-SA 4.0.