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Polyhedra in nature

tetrahedron antimony sodium sulphate

In the natural environment, regular polyhedra can be found in the form of crystals (minerals).

The form of the tetrahedron is transmitted by antimony sodium sulfate.

octahedron rough diamond
Even a rough diamond clearly conveys the shape of an octahedron. After grinding, the stone corresponds exactly to the geometric shape of the octahedron.
treated diamond octahedron
perovskite molecule octahedron
The perovskite molecule structure, the chemical formula is CaTiO3, exactly corresponds to the correct polyhedron.
perovskite octahedron
Spinel octahedron
Spinel. The stone got its name from the Latin "Spinella" - a small thorn.
Spinel octahedron
salt crystals cube
Cube - single-crystal combines the crystals of salt NaCl.
salt crystals cube
Pyrite crystal dodecahedron
The pyrite crystal (pyrite FeS) is in the form of a dodecahedron. Pyrite (from the Greek. "Pir" - fire) - sulfurous iron or pyritic sulfur, the most common mineral from the sulfides group. The size of pyrite crystals reaches several centimeters.
boron crystal icosahedron
Bor - has the shape of an icosahedron.
 

 

Polyhedra in nature. Part 2

 

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