The Structure of Magnetite and the Spinels

@article{BraggTheSO,
  title={The Structure of Magnetite and the Spinels},
  author={William Bragg},
  journal={Nature},
  volume={95},
  pages={561-561}
}
THE structure of the spinel group of crystals is very interesting. These crystals are cubic, and possess the greatest possible number of symmetries. The composition is given by the formula, R″R″′2O4, where the divalent metal R″ may be Mg, Fe, Zn, or Mn, and the trivalent metal R″′ may be Fe, Mn, Cr, or Al. Magnetite is FeFe2O4.