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Created page with "== Introduction == A crystal lattice is a periodic arrangement of atoms, ions, or molecules in a crystalline material. Ordered structures occur from the intrinsic nature of the constituent particles to form symmetric patterns that repeat along the principal directions of three-dimensional space in matter. The smallest area of the lattice that repeats is the unit cell. == Lattice Systems == In crystallography, the terms crystal system, crystal family, and lattice system..."
