| 1. | ?-neptunium takes on a distorted tetragonal close-packed structure.
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| 2. | The unit cell of Cd 3 As 2 is tetragonal.
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| 3. | It occurs as fibrous spheres and exhibits tetragonal crystal structure.
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| 4. | The alpha allotrope is rhombohedral, and the beta allotrope is tetragonal.
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| 5. | Its crystals are small tetragonal tablets with vitreous luster and perfect cleavage.
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| 6. | The achenes are distinctive in the genus in being tetragonal.
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| 7. | The crystal structure of zircon is tetragonal crystal system.
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| 8. | Tetragonal, trigonal and Isometric minerals cannot exhibit pleochroism.
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| 9. | Carbon's crystal structure is tetragonal crystal structure.
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| 10. | At temperatures lower than 105 K, its cubic structure transforms to tetragonal.
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