Tetragonal - Ditetragonal Pyramidal Class

Tetragonal - Ditetragonal Pyramidal Class (H-M Symbol (4mm))

Axial Diagram, Paper Model and KrystalShaper Form

Axial Configuration	Paper Model

Tetragonal - Ditetragonal Pyramidal Class (4 m m)  Mineral Species Listing

System	Class Name	AXES				Planes	Center	Hermann- Maugin Symbols
		2-Fold	3-Fold	4-Fold	6-Fold
Tetragonal	Ditetragonal pyramidal	-	-	-	-	4	-	4mm

Synonyms: Hemimorphic Class, Iodosuccinimide Type, Holohedral Hemimorphic, or Ditetragonal Polar Class.

Space Groups in class: I4₁cd, I4₁md, I4cm, I4mm, P4₂bc, P4₂cm, P4₂mc, P4₂nm, P4bm, P4cc, P4mm, and P4nc.

Example of the Tetragonal Ditetragonal-pyramidal class symmetry in stereo using JCrystal Applet by Steffen Weber.

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Example of the Tetragonal Ditetragonal-pyramidal class symmetry in stereo using Faces (version 3.5) by Georges Favreau.

LEGEND: Bold - (Valid Mineral Species)     ! - Dana Number Added     # - (Grandfathered as Valid}     ? - (Discredited or otherwise Invalid Species)     * - (Not Approved IMA)     See Mouse Pointer Tool Tip on Mineral Name for more Information