GEOLOGY

Detailed explanation-1: -There are 7 crystals systems and they are named: Triclinic, Monoclinic, Orthorhombic, Tetragonal, Trigonal, Hexagonal, and Cubic .

Detailed explanation-2: -Based on their point groups crystals and space groups are divided into seven crystal systems. The Seven Crystal Systems is an approach for classification depending upon their lattice and atomic structure. The atomic lattice is a series of atoms that are organized in a symmetrical pattern.

Detailed explanation-3: -Why are there only 14 Bravais lattices? Because there are only 14 different ways to choose nonequivalent basis vectors in 3-space, and using these basis vectors, 14 different spacial lattice types can be generated.