A24 Reaction of Magnesium and Silicon Dioxide
Magnesium reduces silicon dioxide in a violent reaction with a high activation energy. The reaction is analogous to the reaction of magnesium with carbon dioxide.
2 Mg + SiO2 --> Si + 2 MgO
L. R. Summerlin, C. L. Borgford, and J. B. Ealy,"Chemical Demonstrations A Sourcebook for Teachers",Vol. 2, American Chemical Society, Washington, DC, (1987) p.193.