A regular or twin intergrowth between two hemihedral crystals frequently takes place and results in the production of a holohedral form. |
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Less frequently, crystals are found with various habits that suggest holohedral symmetry. |
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In effect, magnetite does not have internal holohedral cubic symmetry, although the form faces of a crystal do appear as holohedral. |
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In this regard, at least one outer layer of the printed circuit board is embodied as either a holohedral or grid-shaped shielding layer. |
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If, for example, the diameter of the measuring opening of the photometer is 30 mm, then the length of 90 mm is selected for the holohedral to be produced. |
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