What is the chemical name and stracture of the rock salt powder?

Question

Rock salt powder is not edible salt, it is a fine powder from one of the special fine rocks. Farmers mix this salt in pesticides to distribute in fields. i want to know that salt chemical name & structure?

Answer 1

Halite is the mineral form of common salt, with the chemical composition sodium chloride, NaCl. Halite, also called rock salt, is a common mineral, formed by the drying of enclosed bodies of salt water; subsequently the beds so formed have often been buried by the rock strata formed from other sedimentary deposits. Beds of halite range in thickness from a few meters to 30 m (100 ft) and have been found at great depths beneath the surface of the earth. This mineral is often found associated with gypsum, sylvite, anhydrite, calcite, clay, and sand. Halite is widely disseminated over the world; in the United States notable deposits are found in New York, Michigan, Ohio, Kansas, New Mexico, and Utah.

Halite crystallizes in the isometric system, usually in the form of cubes, and shows perfect cubic cleavage. It is colorless and transparent when pure but is often tinted yellow, red, blue, or purple by impurities. It has a hardness of 2.5

Answer 2

sodium chloride  (NaCl)

for its structure, go here

http://www.chemguide.co.uk/atoms/structu...