Our spring salt which has a coarse-granid granular structure ,is produced from 100% natural spring water salt , without being refined in greenhouse type pools. since it is unrefined, it does not contain chemicals such as anti - humidifiers and whiteners . it contains 84 different minerals that are benificial to human helth, such as lithium,vanadium,iron,magnesium and calcium. the rate of insolube matter is 0 no iodine was added.