1 kg of greenSand removes an average of 1 kg of CO₂

On this page you will find all the evidence that supports our claims.

Natural proof of Olivine's effect

Three elements are required for the weathering of Olivine. The mineral Olivine, water and CO₂. The end product is dolomite and limestone.

Our planet has already stored 1 million times more CO₂ in limestone through weathering than what is currently present in the atmosphere and biosphere combined. The Dolomites and the cliffs of Dover (pictured) are examples of such enormous natural CO₂ storage sites.

Practical evidence of Olivine's effectiveness

Scientific evidence is always a nice bonus. But we still prefer to see how Olivine works in practice. The Deltares field trials at the end of 2022 have shown that Olivine lives up to its promise. This research has also shown that the nickel released during weathering remains below the permitted standards. A big step in the green direction for us!

Read the article in the NRC or

Download the report here

Scientific evidence of Olivine's effect

The mineral Olivine is currently the most researched stone on earth. More than 300 studies by various professors and authorities have already taken place worldwide. We have listed the most interesting and relevant ones for you.

Possibilities for practical applications and climate objectives

The report is in three parts:
1. How does Olivine's weathering of CO₂ work and what are the results of ongoing field tests?

2. Six promising applications of olivine within green and infrastructural projects in the Municipality of Rotterdam.

3. The applicable national and European regulations that may relate to the practical application of olivine

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Research into the semi-paving

The use of Olivine in construction in the Netherlands has been investigated by Movares. In particular, the 0-8mm semi-paving in the form of a viewing path along railway lines, investigated by Rien Veldsink, Movares

The project was presented at the Olivine seminar in Rotterdam (2012)

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(English) Research by the Society of Economic Geologists

We provide a detailed account of the natural process of carbon trapping and storage as it occurs at Clinton Creek and Cassiar, including mineralogy, modes of occurrence, methods of formation for carbonate alteration, light stable isotope geochemistry, and radiocarbon analysis. Powder X-ray diffraction data were used to identify weathering products as the hydrated magnesium carbonate minerals nesquehonite [MgCO3⋅3H2O], dypingite [Mg5(CO3)4 (OH)2⋅5H2O], hydromagnesite [Mg5(CO3)4(OH) 2⋅4H2O], and less commonly lansfordite [MgCO3⋅5H2O].

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(English) Applications and implications for chemical weathering

Silicate minerals make up 92 weight percent of the earth's crust so it is not surprising that their weathering reactions dominate the chemistry of the earth's hydrosphere, atmosphere, and pedosphere. Dissolving silicate minerals consume hydrogen ions produced when CO2 dissolves into surface and groundwaters

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(English) Reduce carbon dioxide and supply nutrients

Enhanced Weathering has a number of potential advantages over other proposed geoengineering schemes as a method for avoiding or decelerating climate change, although much remains to be understood about how effectively it would work and what the consequences, risks, and side effects might be.

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