Articles | Volume 34, issue 3
Eur. J. Mineral., 34, 325–349, 2022
https://doi.org/10.5194/ejm-34-325-2022

Special issue: Probing the Earth: experiments and mineral physics at mantle...

Eur. J. Mineral., 34, 325–349, 2022
https://doi.org/10.5194/ejm-34-325-2022
Research article
24 May 2022
Research article | 24 May 2022

High-pressure homogenization of olivine-hosted CO2-rich melt inclusions in a piston cylinder: insight into the volatile content of primary mantle melts

Roxane Buso et al.

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Short summary
Magmas transport large amounts of CO2 from Earth's mantle into the atmosphere and thus contribute significantly to the global carbon cycle. We have developed an experimental method to homogenize at high pressure small liquid droplets trapped in magmatic crystals to gain access to the initial composition of the parental magma (major and volatile elements). With this technique, we show that magmas produced by melting of the subcontinental mantle contain several weight percent of CO2.