My periodic table poster is now available! Celestine. Description from the source: Celestine (Sr SO4 orth.), Sakoany Mine, Mahajanga Province, Madagascar. Nice lustrpus specimen. 3x3x1,5 cm; 10 g. Source: Simone Citon Contributor: John Gray Acquired: 26 September, 2008 Text Updated: 29 September, 2008 Price: Trade Size: 1.2" Composition: SrSO4