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cubic space groups. Other terms for hexoctahedral are: normal class, holohedral, ditesseral central class, galena type. As a rule, since atoms in a solid...49 KB (3,620 words) - 04:18, 28 May 2024- radius r i {\displaystyle r_{i}} are used which are separated from a holohedral metallic coating by a distance d = r o − r i {\displaystyle d=r_{o}-r_{i}}...28 KB (5,097 words) - 16:18, 2 June 2024
class Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) Space group Pmnb (if holohedral) Identification Color Clove-brown, yellowish brown, honey-yellow, salmon-pink...4 KB (298 words) - 17:27, 9 January 2024
crystallographic axes illustrated by colored silk threads or with the holohedral form made of cardboard inside. Also available were models in massive cut...8 KB (914 words) - 22:32, 27 October 2023
- From holo- + Ancient Greek ἕδρα (hédra, “seat”). holohedral (not comparable) (of a crystal) Having as many plane faces as needed for the highest degree
- transition from hemihedral to holohedral forms by sharp grouping in some cases, by striæ like those of pyrites and quartz, of holohedral forms to forms hemitropal