This percentage is determined by chemical analysis; for some salt mines this percentage is over 99 %.
Depending the on the type of rock salt: frequently more than 95 %.
Yes, rock salt wont hurt them.
Rock salt and gypsum are not varieties of dolomite.
Yes, Sodium Chloride is found in Rock Salt.
Chalk.
By evaporating the water of the solution and condensing it.
Generally rock salt is more impure than table salt.
Rock salt and table salt are both sodium chloride - NaCl; table salt is the pure form of rock salt.
Because is not recommended to eat dirty salt.
It's really try it and you will find out relative
Rock salt contains all the minerals found in the seawater from which it formed. These will be many, but NaCl will be the main one.
It is a house which helps rock salt turn into pure salt!
This is possible only after the determination of impurities in the rock salt.
Virtually none. Most salt contains some magnesium chloride.
The luster of rock salt is Vitreous (glassy)
Dissolving tanks, filters and crystallization/recrystallization equipments.
evaporation followed by filitration