Glossary of Terms
1) The building block of all silicates. It is composed of one silicon
atom equidimensionally placed around four oxygen atoms. The groups
of silicates are classified based on how the tetrahedrons join
2) Four sided polyhedron which has all sides equidimensional and triangular shaped. Minerals shaped as tetrahedrons belong to the isometric system.
Plural of Tetrahedron is Tetrahedra or Tetrahedrons.
3D Animated Illustration of a Tetrahedron.
Crystals kindly provided by Smorf