1. For example, zinc has a distorted hexagonal close packed structure. 2. In the ? phase, the molecule centres are hexagonal close packed . 3. Below 50 % oxygen a hexagonal close packed phase exists. 4. The arsenic ions are cubic close packed and the cadmium ions are tetrahedrally coordinated. 5. However both the towns are close packed within a distance of 30 minutes journey. 6. The spinel structures have a twined orientation and are controlled by close packed sheets. 7. It exhibits two types of close pack structures : cubic close packed and hexagonal close packed. 8. It exhibits two types of close pack structures : cubic close packed and hexagonal close packed . 9. The focal plane has 60 separately mounted close packed CCDs arranged in an 8 ?8 array. 10. This allows for goethite to grow within the olivine making the close packed planes common for both structures.
