Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Stilbite. Description from the source: Ca-Stilbite (Na Ca4 (Al9 Si27 O72)x nH2O mon.), Poona, Jalgaon, Maharashtra, India. White crystal cluster with pulverulent Laumontite. 3,5x1,3x1,3 cm; 5 g. Source: Simone Citon Contributor: John Gray Acquired: 27 December, 2008 Text Updated: 28 December, 2008 Price: Trade Size: 1.4" Composition: NaCa4(Al9Si27O72).H2O