Will enhanced mineral weathering intentionally sequester 100gt CO2eq by 2050
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Enhanced mineral weathering is the process by which damp fresh igneous rock surfaces react with carbon dioxide to make calcite and other minerals.

In the UK, a major source is the fine dust produced as a side project when crushing certain igneous rocks in quarries. Heaped up, these stockpiles weather slowly, but spread 30cm thick on green verges, they weather extremely quickly.

They are however localised heavy, need fuel to transport, and energetic to make for this purpose alone.

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I assume olivine weathering would count?

https://worksinprogress.co/issue/olivine-weathering

I work in carbon capture. I'm not optimistic about enhanced weathering to scale to 100gt. IMO if carbon capture scales it will be because it becomes an economically viable feedback, not because we subside it at this massive scale.

predictedYES

@ArunJohnson well, the market doesn't say anything about the incentive, just the technology

predictedNO

@CromlynGames I'm not sure I understand what you're trying to say.

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