Salt has cubed, block-like crystals. It is part of the isometric crystal system. Correct answer: C This type of crystal system is characterized with unit cells in the shape of a cube. Because of this the system is also called cubic system. All crystals of the isometric system possess four 3-fold axes of symmetry. The forms involved in this system are the cube, octahedraon , dodecahedron and trapezohedron.