My periodic table poster is now available! Strontianite. Description from the source: Strontianite (Sr CO3 orth.), Germany. Crystalline mass. 2,5x2x1,5 cm; 15 g with box. Source: Simone Citon Contributor: John Gray Acquired: 30 October, 2008 Text Updated: 31 October, 2008 Price: Trade Size: 1" Composition: SrCO3