Pearson symbol

From Online Dictionary of Crystallography

Symbole de Pearson (Fr). Pearson-Symbol (Ge). Símbolo di Pearson (It). ピアソン記号 (Ja). Символ Пирсона (Ru). Símbolo de Pearson (Sp).

The Pearson symbol describes simple crystal structures by a three-digit code, composed of:

  • an italicised lower-case letter indicating the crystal family
  • an italicised upper-case letter indicating the type of conventional unit cell
  • a number indicating the number of atoms in the unit cell.