Name: Chrysocolla Origin: -- Mineral Label in my collection: 2 Dimensions: 20 x 20 x 15 mm Supplied From: Zamin pajuhan Co. Mr. Mehrdad Nazari, at 1381/09/18 (9 Dec. 2002) Comments: -- Composition: Cu4H4Si4O10(OH)8 XI System: -- Special Gravity: 2.0 - 2.4 Hardness: 2 - 4