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American Mineralogist; August-September; v. 94; no. 8-9; p. 1130-1136; DOI: 10.2138/am.2009.3150
© 2009 Mineralogical Society of America
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Single crystal growth of wadsleyite

Anton Shatskiy1,2,*, Konstantin D. Litasov1,2, Takuya Matsuzaki3, Keiji Shinoda4, Daisuke Yamazaki3, Akira Yoneda3, Eiji Ito3 and Tomoo Katsura3

1 Department of Earth and Planetary Material Science, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
2 V.S. Sobolev Institute of Mineralogy and Petrology, SB RAS, Novosibirsk 630090, Russia
3 Institute for Study of the Earth’s Interior, Okayama University, Misasa, Tottori 682-0193, Japan
4 Department of Geosciences, Osaka City University, Osaka 590-0494, Japan

Correspondence: * E-mail: shatskiy{at}m.tains.tohoku.ac.jp

We have synthesized large (0.7–1.0 mm) crystals of anhydrous, water-bearing, and Fe-bearing wadsleyite by means of growth from solution in the thermal gradient field. Nearly anhydrous (<68±4 wt ppm H2O) Mg2SiO4 crystals were grown using K2Mg(CO3)2 as a solvent at 16.5 GPa and 1700 °C. (Mg0.92Fe0.08)2SiO4 crystals containing 84±17 wt ppm H2O were grown using 92K2Mg(CO3)2-8FeCl2 as a solvent. Crystals of Fe-free wadsleyite with 1496±117 wt ppm H2O were synthesized at 1400 °C and 15.5 GPa by using 2KHCO3-Mg(OH)2 as a solvent.

Key Words: Mg2SiO4 • wadsleyite • single crystal growth • high pressure • thermal gradient method






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