• Journal of the Mineralogical Society of Korea
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• v.16 no.3
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• pp.245-254
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• 2003

Stishovite was synthesized from hydrous basaltic starting materials at 10∼15 ㎬ and $1000∼1400^{\circ}C$. Water content of synthetic stishovite has been determined, and solid solution mechanism of $H_2$ and Al in stishovite was investigated. The maximum water content obtained from stishovite single crystal was up to $844\pm$44 ppm $H_2$O. The concentration of hydrogen increased with increasing substitution of trivalent cation, mainly Al. The temperature effect on the hydrogen content in stishovite is more sensitive than that on any other impurities. Among the nominally anhydrous mantle-minerals, stishovite could be an important water-containing phase and contribute to the transportation of $H_2$O to lower mantle.