Existing ideas about the polygenic origin of diamonds in nature involve various processes,
mechanisms, and driving forces for diamond crystallization, including redox reactions …

We show, by single-crystal diffraction studies in laser-heated diamond-anvil cells, that
Ca2CO4 orthocarbonate, which contains CO44− tetrahedra, can be formed already at~ 20 …

Earth carbon cycle shapes the evolution of our planet and our habitats. As a key region of
carbon cycle, subduction zone acts as a sole channel transporting supracrustal carbonate …

Carbonate minerals are important hosts of carbon in the crust and mantle with a key role in
the transport and storage of carbon in Earth's deep interior over the history of the planet …

Carbonates are the major hosts of carbon on Earth's surface and their fate during subduction
needs to be known to understand the deep carbon cycle. Magnesite (MgCO 3) is thought to …

A novel structure of calcium orthocarbonate Ca 2 CO 4-Pnma has been discovered using ab-
initio crystal structure prediction methods (AIRSS and USPEX) based on the density …

The reactions between pyroxenes and carbonates have been studied in the CaMgSi 2 O 6+
MgCO 3 (Di+ 2Mgs), CaMgSi 2 O 6+ NaAlSi 2 O 6+ 2MgCO 3 (Di+ Jd+ 2Mgs), CaMgSi 2 O …

The origin and evolution of metal melts in the Earth's mantle and their role in the formation of
diamond are the subject of active discussion. It is widely accepted that portions of metal …

Geodynamic models considering fast mantle upwelling without volatile-bearing components
are inapplicable due to high melting temperatures of mantle silicates. Here we discuss the …

Melt inclusions in kimberlitic minerals and diamonds indicate that chlorides are important
constituents of mantle carbonatite melts. Besides, alkaline chlorides are important …