Search results
Results from the WOW.Com Content Network
Monoclinic crystal An example of the monoclinic crystal orthoclase. In crystallography, the monoclinic crystal system is one of the seven crystal systems. A crystal system is described by three vectors. In the monoclinic system, the crystal is described by vectors of unequal lengths, as in the orthorhombic system. They form a parallelogram ...
The 73 symmorphic space groups can be obtained as combination of Bravais lattices with corresponding point group. These groups contain the same symmetry elements as the corresponding point groups, for example, the space groups P4/mmm (, 36s) and I4/mmm (, 37s).
Bravais lattices Lattice system I Hexaclinic 1 2 2 1 Hexaclinic P II Triclinic 2 3 13 2 Triclinic P, S III Diclinic 3 2 12 3 Diclinic P, S, D IV Monoclinic 4 4 207 6 Monoclinic P, S, S, I, D, F V Orthogonal Non-axial orthogonal 5 2 2 1 Orthogonal KU 112 8 Orthogonal P, S, I, Z, D, F, G, U Axial orthogonal 6 3 887 VI Tetragonal monoclinic 7 7 88 2
Pages in category "Monoclinic minerals" The following 200 pages are in this category, out of approximately 544 total. This list may not reflect recent changes.
For example, the monoclinic I lattice can be described by a monoclinic C lattice by different choice of crystal axes. Similarly, all A- or B-centred lattices can be described either by a C- or P-centering. This reduces the number of combinations to 14 conventional Bravais lattices, shown in the table below.
The fourteen three-dimensional lattices, classified by lattice system, are shown above. The crystal structure consists of the same group of atoms, the basis, positioned around each and every lattice point. This group of atoms therefore repeats indefinitely in three dimensions according to the arrangement of one of the Bravais lattices.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A simple cubic crystal has only one lattice constant, the distance between atoms, but in general lattices in three dimensions have six lattice constants: the lengths a, b, and c of the three cell edges meeting at a vertex, and the angles α, β, and γ between those edges. The crystal lattice parameters a, b, and c have the dimension of length.