Water Concentration in Single‐Crystal (Al,Fe)‐Bearing Bridgmanite Grown From the Hydrous Melt: Implications for Dehydration Melting at the Topmost Lower Mantle

• Published in: Geophysical research letters Vol. 46; no. 17-18; pp. 10346 - 10357
• Main Authors: Fu, Suyu, Yang, Jing, Karato, Shun‐ichiro, Vasiliev, Alexander, Presniakov, Mikhail Yu, Gavrilliuk, Alexander G., Ivanova, Anna G., Hauri, Erik H., Okuchi, Takuo, Purevjav, Narangoo, Lin, Jung‐Fu
• Format: Journal Article
• Language: English
• Published: Washington John Wiley & Sons, Inc 01.09.2019
• Subjects: Analytical methods; Bearing; Chemical bonds; Crystal lattices; Crystal structure; Crystals; Dehydration; dehydration melting; Earth; Earth surface; Electron microscopy; Hydrogen; Hydrogen atoms; Hydrogen storage; Hydrologic cycle; Hydrological cycle; Infrared analysis; Infrared spectroscopy; Iron; Lower mantle; Mantle; Mass spectrometry; Mass spectroscopy; Melting; Micrometers; Microscopy; Minerals; Moisture content; Oceans; Organic chemistry; Petrographic microscopy; Platelets; Scanning electron microscopy; single‐crystal bridgmanite; Solubility; Stretching; Synthesis; Transition zone; Transmission electron microscopy; Water content; water solubility

High‐quality single‐crystals of (Al,Fe)‐bearing bridgmanite, Mg0.88 Fe3+0.065Fe2+0.035Al0.14Si0.90O3, of hundreds of micrometer size were synthesized at 24 GPa and 1800 °C in a Kawai‐type apparatus from the starting hydrous melt containing ~6.7 wt% water. Analyses of synthesized bridgmanite using pe...