Transparent cubes? This beautiful mineral is halite. Some may also know it by the name sodium chloride or simply salt – more precisely table salt. For our roads on in the winter, if it will be cold again this winter, salts are also used. These are especially potassium salts and are also mined in Germany. Halite crystallizes in the cubic system, which can be seen very nicely in these cubes. Due to mixtures of small amounts of other elements or lattice defects, halite can also have a gray, brownish, yellow to red or bluish color.