Show sample as: 72-frame QuickTime VR or 360-frame QuickTime movie loop.    My periodic table poster is now available! Manganaxinite. Description from the source: Manganaxinite (Ca2 Mn+2 Al2 B Si4 O15 (OH) tric.), Dalnegorsk, Russia. Brown greenish, bladed crystal cluster. 2,5x2x1,5 cm; 8 g. Source: Simone Citon Contributor: John Gray Acquired: 30 October, 2008 Text Updated: 31 October, 2008 Price: Trade Size: 1" Composition: Ca2Mn+2Al2BSi4O15(OH)