Fe-Bearing Carbonates in the Deep Earth

Dear Colleagues,

Carbonate minerals are considered to be the major source of carbon influx inside the deep Earth. They can be found as inclusions in natural diamonds coming from the deep mantle. Recent experimental investigations demonstrate their ability to transform into highly polymerized tetracarbonate structures at pressures and temperatures of the lowermost mantle. In particular, the study of Fe-carbonates at extreme conditions has attracted considerable interest in the last decade. Multiple valence states and magnetism, such as the electronic spin pairing of iron 3d electrons, result in a rich physics and chemistry of Fe-carbonates at extreme conditions. Moreover, recent experiments in multi-phase systems, where Fe-carbonates were subjected to extreme conditions in the presence of silicates, has revealed a more complex and intriguing system than previously thought.

We cordially invite you to contribute to this Special Issue, “Iron bearing carbonate in the deep Earth”, which will cover topics such as:

• (Redox)-reactions in multi-phase systems containing Fe-carbonates;
• Vibrational properties of Fe-carbonates at extreme conditions;
• Fe-carbonate melts of chemical and physical properties at extreme conditions, i.e., structure, density, and viscosity;
• Stability of Fe-bearing carbonates at high pressure and temperature, decomposition, and phase transformation;
• Synthesis of Fe-carbonates at extreme conditions.

Dr. Valerio Cerantola
Dr. Eglantine Boulard
Guest Editors

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