pattern shown here. Since I realize that it is difficult to pin point the actual unit cell from the lattice, let's cut some of the atoms from the end of the lattice in order to facilitate this. This ...

Its melting temperature is 937.4 C. Germanium has the diamond cubic crystal structure shown, an fcc lattice with a basis of two germanium atoms, one at (0,0,0) and the other at (1/4, 1/4, 1/4) in ...

Another perspective on spinel comes from looking at its unit shell (counter-intuitive, I know). First we show the Mg atoms, which form an fcc aray, plus 4 more atoms inside the cube. Those 4 are ...