scalenohedron
Quick Summary
A scalenohedron is a crystal form bounded by scalene triangles. In crystallography, it is classified as a closed form, meaning it encloses space.12
There are two main types of scalenohedrons:
* Hexagonal system: This form has 12 faces and resembles a double six-sided pyramid.1
* Tetragonal system: This form has 8 faces and somewhat resembles a disphenoid.1
The term "scalenohedral" is an adjective used to describe something that has the form of a scalenohedron, such as a scalenohedral crystal or calcite. The symmetry elements present in a crystal determine its external shape.34
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