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SiO₄ tetrahedron
3D Model

Avatar of Landy42
Earth Sciences, University of Newcastle
pro
3.7k
3684 Views
2Like
Report
Triangles: 20
Vertices: 15.1k
More model information

This model depicts the basic building block of most silicate minerals - the SiO₄ tetrahedron. It is represented by a ball-and-stick portrayal of the molecule with a single cation of silicon (Si⁴⁺) in the centre (in red) bonded with four surrounding oxygen anions (each O²⁻) in a tetrahedral arrangement (yellow). This is combined with a transparent (purple) depiction of the coordination polyhedron. The molecule cannot exist by itself as there is a residual negative charge of 4-. This charge is accounted for by sharing oxygen anions with adjacent tetrahedra (e.g. in quartz), or by bonding with other cations in silicate minerals (e.g. Mg²⁺ in olivine).

Published 6 years ago
Jan 11th 2017
  • Science & technology 3D Models
  • mineralogy
  • silicates

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