Transparent and colourless single crystals of BaZnGeO4 were grown by the Czochralski pulling method. Chemical analysis showed that the crystal composition was very close to stoichiometry. The unit cell is hexagonal with a = 9.297 (1) and c = 35.284 (2) Å. These are √3 and 4 times larger for a and c, respectively, than the already reported ones. D293 is 5.144 and Dx is 5.140 Mg m−3 for Z = 24. The most probable space group is P63. Indexed powder data and some physical properties are given.
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H. Takei (1980) studied this question.
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