1、立方晶系[等轴晶系]-cubic system [晶体] a=b=c; α=β=γ=90°;
2、四方晶系[正方晶系]-tetragonal system [晶体] a=b≠c; α=β=γ=90°;
3、正交晶系(晶体)-orthorhombic system [晶体] a≠b≠c; α=β=γ=90°;
4、单斜晶系-monoclinic system [晶体] a≠b≠c;α=γ=90°≠β;
5、三斜晶系-triclinic system [晶体] a≠b≠c; α≠γ≠β;
6、菱方晶系[三角晶系]-rhombohedral system [晶体] a=b=c; α=β=γ≠90°(<
120°);
7、六方晶系-hexagon system [晶体] a=b≠c;α=β=90°;γ=120°;