Final answer:
The mineral commonly known as rock salt is halite, which is sodium chloride (NaCl) and is recognized by its cubic crystals.
Step-by-step explanation:
The mineral more commonly known as rock salt is halite. Halite, chemically known as sodium chloride (NaCl), is an ionic solid comprising equal numbers of cations (sodium ions) and anions (chloride ions) held together by ionic bonds.
This mineral is extensively used as a seasoning for food, for de-icing roads, and has various industrial applications. Unlike gypsum, feldspar, or quartz, halite is easily recognizable by its cubic crystals and salty taste.