Name: Blue Halite Origin: Iran Mineral Label in my collection: -- Dimensions: 65 x 43 x 40 mm Supplied From: 1381/10/29 (19, Jan. 2003) Comments: This is salt and is a eatable slat specimen. Composition: NaCl ( I don'd know what is the impurity) XI System: Isometric Special Gravity: 2.16 Hardness: 2.5