tetragonal
91Structure d'un cristal — Structure cristalline Pour les articles homonymes, voir Cristal (homonymie) . La structure cristalline (ou structure d un cristal) est complètement décrite par les paramètres de son réseau de Bravais, son groupe d espace et la position des atomes …
92Structures cristallines — Structure cristalline Pour les articles homonymes, voir Cristal (homonymie) . La structure cristalline (ou structure d un cristal) est complètement décrite par les paramètres de son réseau de Bravais, son groupe d espace et la position des atomes …
93advanced structural ceramics — Introduction ceramic materials that demonstrate enhanced mechanical properties under demanding conditions. Because they serve as structural members, often being subjected to mechanical loading, they are given the name structural ceramics.… …
94Sulfide minerals — ▪ Table Sulfide minerals name colour lustre Mohs hardness specific gravity habit or form fracture or cleavage refractive indices or polished section data crystal system argentite blackish lead gray metallic 2–2 1/2 7.2–7.4 cubic or octahedral… …
95Silicate minerals — ▪ Table Silicate minerals name colour lustre Mohs hardness specific gravity Tectosilicates (three dimensional networks) feldspar (for other examples, see feldspar) orthoclase flesh red, white to pale yellow, red, green vitreous 6–6½ 2.6… …
96Crystal structure of boron-rich metal borides — Two single crystals of YB66 (1 cm diameter) grown by floating zone technique using (100) oriented seeds. In the top crystal, the seed (left from the black line) has same diameter as the crystal. In the bottom crystal (sliced), the seed is much… …
97Metazeunerite — crystals to 7 mm on smoky quartz, Erongo Region, Namibia General Category …
98Ice — This article is about water ice. For the broader concept of ices as used in the planetary sciences, see volatiles. For other uses, see Ice (disambiguation) …
99Samarium — promethium ← samarium → europium ↑ Sm ↓ …
100Silicon dioxide — Silica redirects here. For other uses, see Silica (disambiguation). Silicon dioxide …
