Definition of tetragonal in English:
Of or denoting a crystal system or three-dimensional geometrical arrangement having three axes at right angles, two of them equal.
- Superb, equant tetragonal crystals occur on quartz in the junction pockets.
- The crystals are typically tetragonal dipyramids with pinacoids.
- Narsarsukite is another tetragonal mineral that can show a tetragonal prismatic habit, particularly when it develops in open cavities.
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