Cementite occurs in steels, in meteorites, possibly at the core of the Earth and has uses in its
pure form. It's composition can deviate from F e 3 C, but not by much because the Fe–C …

▪ Abstract The mechanisms of exchange of hydrogen between the deep interior and surface
of Earth, as well as the means of retention and possible abundance of hydrogen deep within …

Carbonates are important constituents of marine sediments and play a fundamental role in
the recycling of carbon into the Earth's deep interior via subduction of oceanic crust and …

Most of the oxidized carbon in the Earth's lower mantle is believed to be stored in the high-
pressure forms of MgCO3 and/or CaCO3 or possibly even CO2. Recently, through ab initio …

The nature and extent of Earth's deep carbon cycle remains uncertain. This chapter
considers high-pressure carbon-bearing minerals, including those of Earth's mantle and …

The cementite phase of Fe3C has been studied by high-resolution neutron powder
diffraction at 4.2 K and at 20 K intervals between 20 and 600 K. The crystal structure remains …

The solubility of carbon in olivine, enstatite, diopside, pyrope, MgAl2O4 spinel, wadsleyite,
ringwoodite, MgSiO3–ilmenite and MgSiO3–perovskite has been quantified. Carbon …

Iron carbides in association with native iron, graphite, and magnetite were identified in a
crystal of diamond from the Juina area, Brazil, that contains a series of other, deep-mantle …

Earth's core is known to be metallic, with a density of about 9.90 Mg· m− 3 at the coremantle
boundary and as such is substantially denser than the surrounding mantle (5.56 Mg· m− 3 at …

The light alloying element in the Earth's core has not been identified yet. Here we
determined the pressure‐volume equations of state of FeSi, Fe3C, and Fe0. 95O in the core …