My periodic table poster is now available! Tantalite from Jensan Set. This sample represents tantalum in the "The Grand Tour of the Periodic Table" mineral collection from Jensan Scientifics. Visit my page about element collecting for a general description, or see photographs of all the samples from the set in a periodic table layout or with bigger pictures in numerical order. Source: Jensan Scientifics Contributor: Theodore Gray Acquired: 10 January, 2009 Text Updated: 10 January, 2009 Price: Anonymous Size: 0.6" Composition: (Mg,Fe)(Ta,Nb)2O6