# Difference between revisions of "Crystal Systems"

m |
(added image) |
||

Line 4: | Line 4: | ||

! Examples | ! Examples | ||

|- | |- | ||

− | | '''Cubic''' <br> | + | | '''Cubic''' <br /> |

− | The cube is composed of 6 square faces<br> | + | The cube is composed of 6 square faces<br /> |

− | at 90° angles to each other. Each<br> | + | at 90° angles to each other. Each<br /> |

− | face intersects one of the crystallographic<br> | + | face intersects one of the crystallographic<br /> |

− | axes and is parallel to the other two.<br> | + | axes and is parallel to the other two.<br /> |

| [[image:cubic.jpg]] | | [[image:cubic.jpg]] | ||

|[[Diamond]] <br /> | |[[Diamond]] <br /> | ||

Line 16: | Line 16: | ||

| '''Tetragonal''' <br /> | | '''Tetragonal''' <br /> | ||

− | The tetragonal system also has three axes<br> | + | The tetragonal system also has three axes<br /> |

− | that all meet at 90°. It differs from the<br> | + | that all meet at 90°. It differs from the<br /> |

− | isometric system in that the C axis is longer<br> | + | isometric system in that the C axis is longer or<br /> |

− | than the A axes, which are the same length.<br> | + | shorter than the A axes.<br /> |

− | + | than the A axes, which are the same length.<br /> | |

| [[image:tetragonal.jpg]] | | [[image:tetragonal.jpg]] | ||

|[[Zircon]] | |[[Zircon]] | ||

Line 62: | Line 62: | ||

In this system, there are three axes all of which<br /> | In this system, there are three axes all of which<br /> | ||

meet at 90° to each other. However, all the axes<br /> | meet at 90° to each other. However, all the axes<br /> | ||

− | are | + | are of different length. |

− | |[[image: | + | |[[image:Orthorhombic.jpg]] |

|[[Alexandrite]]<br /> | |[[Alexandrite]]<br /> | ||

[[Andalusite]]<br /> | [[Andalusite]]<br /> |

## Revision as of 09:49, 27 June 2007

Crystal System | Diagram | Examples |
---|---|---|

Cubic The cube is composed of 6 square faces |
Diamond | |

Tetragonal The tetragonal system also has three axes |
Zircon | |

Hexagonal
In the hexagonal system, we have an additional axis, |
Aquamarine | |

TrigonalThe trigonal system is a subsystem of the |
Amethyst | |

OrthorhombicIn this system, there are three axes all of which |
Alexandrite Andalusite | |

MonoclinicThe above crystal systems all have axes sides |
Azurite | |

TriclinicIn this system all the axes are different |
Turquoise |