| 1. | Arsenic, antimony, and bismuth all have rhombohedral crystal structures.
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| 2. | It has a rhombohedral cystal structure similar to that of pyroaurite.
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| 3. | The tiling is formed by two tiles with rhombohedral shape.
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| 4. | The solid can also take a rhombohedral structure as well.
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| 5. | The alpha allotrope is rhombohedral, and the beta allotrope is tetragonal.
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| 6. | Simonkolleite is rhombohedral, space group R 3 m.
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| 7. | It can be distinguished from atacamite by the rhombohedral shape of its crystals.
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| 8. | Amorphous powder boron and polycrystalline rhombohedral ?-boron are the most common forms.
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| 9. | Paratacamite is rhombohedral, space group R 3.
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| 10. | Numerous examples are known with cubic, tetragonal, rhombohedral, and orthorhombic symmetries.
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