Have you ever wondered what combination of crystal forms were needed to create those unique pyrite crystals? What about other minerals in the isometric system? Below are some combinations of 2 and 3 isometric crystal forms that should help you interpret some complex crystals and assign the proper faces (I made each series using KRISTALL2000).Pyritohedron - Octahedron Crystal CombosPyritohedron - Cube Crystal CombosOctahedron - Cube Crystal Combos..

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 Have you ever wondered what combination of crystal forms were needed to create those unique pyrite crystals? What about other minerals in the isometric system? Below are some combinations of 2 and 3 isometric crystal forms that should help you interpret some complex crystals and assign the proper faces (I made each series using KRISTALL2000). 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The following shows the relationship of a Pyritohedron interacting one or two other crystal forms:

 

 

 

 

The following shows an example cube of Fluorite modified by several Crystal Forms

Here, is a series that shows the difference between the Cube's corners being modified by a Trapezohedron {211} or a Trisoctahedron {221} with the edges being modified by a Dodecahedron {110}. Notice the "notch taken out of the corner and the inverted "Y".

The following shows an example Octahedron of Fluorite modified by several Crystal Forms