| Growth of Emerald Crystals by Evaporation of Na2O—MoO3 Flux |
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| 作者姓名： | Oishi Shuji |
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| 作者单位： | Oishi ShujiDepartment of Environmental Science and Technology，Faculty of Engineering，Shinshu University，Wakasato，Nagano 380-8553，JapanYamamoto HirofumiDepartment of Chemistry and Material Engineering，Faculty of Engineering，Shinshu University |
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| 摘 要： | Well-formed crystals of emerald, Be3AI2Si6O18:Cr, were easily grown from an Na2O-MoO3 flux by an isothermal technique. The crystal growth was conducted by heating a mixture of solute and flux at 1 100 ℃ for 24 h. The evaporation loss of flux depended on the amount of Na2O added to MoO3. Emerald crystals of lengths up to 2.1 mm and widths of 1. 4 mm were grown. The crystal sizes were dependent on the evaporation loss of the flux. The obtained crystals were transparent and exhibited the typical emerald-green color. The form of the emerald crystals was a twelve-sided prism bounded by well-developed faces. The aspect ratios were in the region of 1. 4 to 2. 3. The density was (2. 64±0.02) g/cm3. The IR absorption bands were in good agreement with the literature data.
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| 关 键 词： | 绿宝石 单一晶体 熔盐生长 蒸发作用 氧化钠 氧化钼 |
Growth of Emerald Crystals by Evaporation of Na2O-MoO3 Flux |
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| Oishi Shuji.Growth of Emerald Crystals by Evaporation of Na2O-MoO3 Flux[J].Journal of China University of Geosciences,2002,13(1):35-39. |
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| Authors: | Oishi Shuji Yamamoto Hirofumi Suzuki Takaomi |
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| Abstract: | Well-formed crystals of emerald, Be3Al2Si6O18 : Cr, were easily grown from an Na2OMoO3 flux by an isothermal technique. The crystal growth was conducted by heating a mixture of solute and flux at 1 100 ℃ for 24 h. The evaporation loss of flux depended on the amount of Na2O added to MoO3. Emerald crystals of lengths up to 2. 1 mm and widths of 1.4 mm were grown. The crystal sizes were dependent on the evaporation loss of the flux. The obtained crystals were transparent and exhibited the typical emerald-green color. The form of the emerald crystals was a twelve-sided prism bounded by well-developed faces. The aspect ratios were in the region of 1.4 to 2.3. The density was (2.64±0.02)g/cm3. The IR absorption bands were in good agreement with the literature data. |
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| Keywords: | emerald single crystal flux growth evaporation Na2O-MoO3 |
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