الأنظمة البلورية
الأنظمة البلورية السبعة الأساسية التي تصف تماثل المعادن.
Cubic (Isometric)
134/m -3 2/m (Oh)
The cubic or isometric crystal system features three mutually perpendicular axes of equal length. Minerals in this system have the …
Hexagonal
26/m 2/m 2/m (D6h)
The hexagonal crystal system has four crystallographic axes: three equal horizontal axes intersecting at 120 degrees and one vertical axis …
Orthorhombic
72/m 2/m 2/m (D2h)
The orthorhombic crystal system has three mutually perpendicular axes of different lengths. Crystals often form prismatic or tabular shapes. Common …
Tetragonal
44/m 2/m 2/m (D4h)
The tetragonal crystal system has three mutually perpendicular axes, two of which are equal in length. Crystals commonly form elongated …
Triclinic
5-1 (Ci)
The triclinic crystal system has the lowest symmetry of all crystal systems, with three unequal axes at oblique angles. Crystals …
Monoclinic
102/m (C2h)
The monoclinic crystal system has three axes of unequal length with one axis inclined to the other two. It is …
Trigonal
9-3 2/m (D3d)
The trigonal crystal system, sometimes considered a subdivision of hexagonal, features three-fold rotational symmetry. Crystals typically form rhombohedra, scalenohedra, or …