Proceedings of the Japan Academy Series B · 1991 · 31 citations · 3 references
Natural SciencesEarth SciencesGeologyCrystal StructureGeochemistryMineralogyMantle GeochemistryMantle PetrologyMineral StabilityMineral ThermodynamicsPhysical Properties Of MineralsThermodynamics Of RocksAtmospheric PressureHigh-pressure Phase TransformationsHigh-temperature StabilityLower Mantle StructureMantle MineralogyMantle Phase EquilibriaMineral Physics Of The MantlePhase Transitions In The Mantle
High-pressure and high-temperature stability of MgC03 magnesite was investigated using a lever and spring type of diamond anvil cell up to 55 GPa at about 1300C. No phase transformation was observed in magnesite at the pressures investigated. Magnesite would be a dominant carbon-reservoir in the lower mantle. The volume of magnesite at 55 GPa is 77% of that at the atmospheric pressure. The compressibility in the c-axis is 8% larger than that in the a-axis.
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High-Pressure Research in Geophysics
T.R.N. Kutty · Journal of the Geological Society of India · 1983 · 338 citations