# Carbfix: Carbon turned to stone

- URL : https://www.inexpeditions.com/en/in100/le-carbone-change-en-pierre
- Language : English
- Publisher : in:Expeditions SAS, 8 rue Lacépède, 75005 Paris, bonjour@inexpeditions.com
- Place : Carbfix, Hellisheiði, Islande du Sud, IS (https://www.carbfix.com/)

> At the foot of Mount Hengill, 25 km from Reykjavík, Carbfix dissolves CO₂ from a geothermal power plant in water and injects it into basalt. The rock does…

Carbon turned to stone

## Carbfix

carbfix.com

At the foot of Mount Hengill, 25 km from Reykjavík, Carbfix dissolves CO₂ from a geothermal power plant in water and injects it into basalt. The rock does the rest: more than 95% of the injected CO₂ turns into minerals in under two years, locked in stone for good.

Carbfix began as a university research project. Its injection system can now store about 12,000 tonnes of CO₂ a year, captured with H₂S from two ON Power geothermal plants. In September 2026 the foreign ministers of the Benelux countries came to see its wells. A team measures how much patience, monitoring and proof it takes for a laboratory idea to work at the scale of a power plant.

The Carbfix group tour lasts one to one and a half hours: the geothermal exhibition, then an injection well and its surroundings, with a science communicator, after a safety video, helmet, vest and glasses provided. A 90-minute to two-hour version adds a presentation in a meeting room, for ages 16 and over. Access to the wells depends on the weather. Prices on request; the site is just off Highway 1, 25 km east of Reykjavík.

Photo credits : Siljaye (Wikimedia Commons, CC BY-SA 4.0) ; Sandra Ósk Snæbjörnsdóttir, publiée par Sigrg (Wikimedia Commons, CC BY-SA 4.0) ; Hansueli Krapf (Wikimedia Commons, CC BY-SA 3.0) ; U.S. Department of State (Wikimedia Commons, domaine public)

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Source : https://www.inexpeditions.com/en/in100/le-carbone-change-en-pierre · in:Expeditions, learning expeditions and impact retreats since 2015.