====== 結晶系 ======
  * [[crystal:三斜晶系]]
  * [[crystal:単斜晶系]]
  * [[crystal:斜方晶系]]
  * [[crystal:正方晶系]]
  * [[crystal:六方晶系]]
  * [[crystal:三方晶系（菱面体）]]
  * [[crystal:立方晶系]]