As the water:rock ratio is decreased, jarosite is formed earlier in the chemical weathering process (> 80% of basalt must weather to produce jarosite at water:rock = 100:1, while <20%, <2% and <0. ...

Antimony isotopic fractionation during intensive chemical weathering of basalt in the tropics. Journal: Geochimica et Cosmochimica Acta Published: 2024-02-01 DOI: ...

From sugar plantations in Brazil to tea estates in India, crushed rock is being sprinkled across large stretches of farmland ...

He's holding pieces of basalt. It's a hard volcanic rock that is neither rare nor particularly remarkable. But through a process known as 'enhanced rock weathering' it could help to cool our ...

Enhanced weathering could remove up to 4.9 billion tons per year if basalt is used, and up to 95 billion tons for dunite, according to the scientists' calculations.

Extreme rock weathering is a carbon removal technology that is attracting investment from likes of Microsoft; The technology, based on mineral-rich rock such as basalt, has the ability to both ...

Grinding the basalt accelerates a natural weathering process that involves two chemical reactions. First, atmospheric CO 2 dissolves in rainwater to create carbonic acid.

Microsoft has agreed to pay for 25,000 tonnes of basalt to be scattered on UK fields. As part of the deal Microsoft will also help audit the project and verify that it is working as intended.

The trials will test the effect of basalt application rate (two rates plus control) over four years (plant crop plus three ratoons). In all trials, we’ll be assessing the weathering rate by measuring ...

Basalt is applied to fields at the University of Illinois Energy Farm as part of an enhanced weathering project. Credit: Institute for Sustainability, Energy, and Environment (iSEE) ...

This year UNDO is planning to spread 185,000 tonnes of basalt and hopes by 2025 to have removed a million tonnes of CO2. It's still a drop in the ocean compared to emissions.

The idea of leveraging weathering to combat climate change isn’t new. A paper published in Nature proposed using silicates to capture carbon dioxide 30 years ago. Five years later, Exxon ...