| Hexagonal closest packed (HCP) structure elements | . | |||||||||||||||
| Be, b-Ca, Cd, a-Co, Dy, Er, Gd, Hf, Ho, Lu, Mg, Nd, Os, Pr, Re, Ru, Sc, b-Sr, Tb, Tc, Ti, | . | |||||||||||||||
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Tl, Tm, Y, Yb, Zn, a-Zr |
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| Crystal lattice | . | |||||||||||||||
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| The ABA eclipsed alignment of the atoms in successive triangulated closest | . | |||||||||||||||
| packed layers is demonstrated in the above model of the HCP lattice. | . | |||||||||||||||
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| Polyhedral framework | ||||||||||||||||
| The polyhedral framework model of HCP elements is identical to the HCP lattice | ||||||||||||||||
| which can be modeled as a space filling of tetrahedra and octahedra in a ratio of 2:1 | ||||||||||||||||
| as shown previously. | ||||||||||||||||
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| Cleavage | Crystal habit | |||||||||||||||
| (100) - perfect | tabular | |||||||||||||||
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Back to Knowhere |
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Page 33 - Structure matters - HCP elements |
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