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Quadrangular bipyramidal, Quadrangular bipyramid(s)

Quadrangular bipyramidal crystals. This crystal habit is restricted to the tetragonal and orthorhombic systems.

• Classification: Single crystal - Bipyramidal

• Frequency:
• Cubic: rare
• Tetragonal: frequent
• Orthorhombic: rare
• Hexagonal: none
• Trigonal: none
• Monoclinic: rare
• Triclinic: none

• Examples:
• Anatase
• Apophyllite-(KF)
• Apophyllite-(KOH)
• Braunite
• Gahnite
• Gersdorffite
• Hauerite
• Hausmannite
• Magnetite
• Ramsdellite
• Scheelite
• Scorodite
• Spinel
• Sulphur
• Vesuvianite
• Xenotime-(Y)