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An example of the tetragonal crystals, wulfenite Two different views (top down and from the side) of the unit cell of tP30-CrFe (σ-phase Frank–Kasper structure) that show its different side lengths, making this structure a member of the tetragonal crystal system. In crystallography, the tetragonal crystal system is one of the 7 crystal systems.
Crystal systems that have space groups assigned to a common lattice system are combined into a crystal family. The seven crystal systems are triclinic, monoclinic, orthorhombic, tetragonal, trigonal, hexagonal, and cubic. Informally, two crystals are in the same crystal system if they have similar symmetries (though there are many exceptions).
In monoclinic, trigonal, tetragonal, and hexagonal systems there is one unique axis (sometimes called the principal axis) which has higher rotational symmetry than the other two axes. The basal plane is the plane perpendicular to the principal axis in these crystal systems. For triclinic, orthorhombic, and cubic crystal systems the axis ...
For example, 2 1 is a 180° ... Tetragonal crystal system; Number Point group Orbifold Short name Full name Schoenflies Fedorov Shubnikov Fibrifold; 75: 4: P4: P 4
Media in category "Tetragonal minerals" This category contains only the following file. Cassiterite.jpg 5,616 × 3,744; 4.17 MB
Tetragonal crystal system (3 C, 1 P) Pages in category "Tetragonal crystals" The following 2 pages are in this category, out of 2 total.
Tetragonal crystal system This page was last edited on 31 December 2022, at 16:52 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...
For example, hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal system. The natural color of zircon varies between colorless, yellow-golden, red, brown, blue, and green. The name derives from the Persian zargun, meaning "gold-hued". [10]