What are some examples of halide minerals?
The two most common are halite (NaCl - common table salt) and sylvite or potash (KCl)
The halide mineral class include those minerals with a dominant halide anion (F−, Cl−, Br− and I−) (Wiki),
Most halide minerals form in hot evaporitic basins wherein the mineral constitutes are usually found in solution as ions. As the water evaporates, the halides precipitate out when they reach the right chemical concentration.
NaCl or table salt is an important economic mineral for the food industry. KCl and CaF2 (Fluorite) are two important halides used in the fertilizer industry.