Properties of beryl single crystals grown by a high pressure hydrothermal method

Beryl crystals were grown under high pressure hydrothermal condition of 1 GPa. The optimum crystal growth was observed at 600°C and from 0.1N NaOH solution. The beryl crystals from 0.1–0.3N NaOH solutions incorporated water molecules and alkali cations in the channels of the beryl structure. The cry...

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Veröffentlicht in:	Materials research bulletin 1989-08, Vol.24 (8), p.967-972
Hauptverfasser:	Furusaki, Tsuyoshi, Bando, Yoshikazu, Kodaira, Kohei, Matsushita, Toru
Format:	Artikel
Sprache:	eng
Schlagworte:	360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication 360202 - Ceramics, Cermets, & Refractories- Structure & Phase Studies 360204 - Ceramics, Cermets, & Refractories- Physical Properties ALKALI METAL COMPOUNDS ALKALINE EARTH METAL COMPOUNDS BERYL BERYLLIUM COMPOUNDS BERYLLIUM SILICATES Cross-disciplinary physics: materials science rheology CRYSTAL GROWTH CRYSTAL STRUCTURE CRYSTALS DENSITY DISPERSIONS Exact sciences and technology HIGH PRESSURE HYDROGEN COMPOUNDS HYDROTHERMAL SYNTHESIS HYDROXIDES MATERIALS SCIENCE Methods of crystal growth physics of crystal growth MICROSTRUCTURE MINERALS MIXTURES MONOCRYSTALS OPTICAL PROPERTIES OXYGEN COMPOUNDS PHYSICAL PROPERTIES Physics REFRACTIVITY SILICATE MINERALS SILICATES SILICON COMPOUNDS SODIUM COMPOUNDS SODIUM HYDROXIDES SOLUTIONS SYNTHESIS Theory and models of crystal growth physics of crystal growth, crystal morphology and orientation
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Zusammenfassung:	Beryl crystals were grown under high pressure hydrothermal condition of 1 GPa. The optimum crystal growth was observed at 600°C and from 0.1N NaOH solution. The beryl crystals from 0.1–0.3N NaOH solutions incorporated water molecules and alkali cations in the channels of the beryl structure. The crystals showed same refractive indices and density as those of natural emerald crystals. These physical properties were very similar to natural emeralds.
ISSN:	0025-5408 1873-4227
DOI:	10.1016/0025-5408(89)90180-3