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.