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Monoclinic crystal systemIn crystallography, the monoclinic crystal system is one of the 7 lattice point groups. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal length, as in the orthorhombic system. They form a rectangular prism with a parallelogram as base. Hence two pairs of vectors are perpendicular, while the third pair make an angle other than 90°. There exist two monoclinic Bravais lattices: the simple monoclinic and the centered monoclinic lattices, with layers with a rectangular and rhombic lattice, respectively. The crystal classes that fall under this crystal system are listed below, followed by their representations in international notation and Schoenflies notation, and mineral examples.
The number of space groups for each crystal class is 6, 3, and 4, respectively. The three monoclinic hemimorphic space groups are as follows:
The four monoclinic hemihedral space groups include
See alsoReferences


This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Monoclinic_crystal_system". A list of authors is available in Wikipedia. 