salt mass halite 2021-07-03T00:22:16.764Z A salt mass which consists of isometric crystals of sodium chloride (NaCl). Typically colorless or white. Halite may also occur in various color including light blue, dark blue, purple, pink, red, orange, yellow or gray depending on inclusion of other materials, impurities, and structural or isotopic abnormalities in the crystals. rock salt