Rock salt
Mineral
Yes, rock salt is a mineral (halite) not a rock.
The mineral of salt (NaCl) is called halite.
Rock salt is sodium chloride; the mineral has the name halite.
It was never really "invented." Rock salt is halite, a mineral.
Salt used in cooking is derived from seawater (sea salt) or from layers of salt in mineral deposits (rock salt or mineral salt).
The mineral of salt (NaCl) is called halite.
The halide mineral group.
Halite
Salt Halite (Rock salt).
If the stone consisted purely of one mineral, then it would be a mineral and not a rock.