<page_title> Ferrocerium </page_title> <section_title> Composition </section_title> <table> <cell> 20.8% <row_header> Fraction </row_header> </cell> <cell> 41.8% <row_header> Fraction </row_header> </cell> <cell> 4.4% <row_header> Fraction </row_header> </cell> <cell> 4.4% <row_header> Fraction </row_header> </cell> <cell> 4.4% <row_header> Fraction </row_header> </cell> <cell> 24.2% <row_header> Fraction </row_header> </cell> </table>
Ferrocerium is composed of 20.8% iron, 41.8% cerium, about 4.4% each of praseodymium, neodymium, and magnesium, and 24.2% lanthanum.