Betafite Crystal

Betafite is a popular uranium bearing mineral to collect. It is one of the few uranium minerals to form nice well shaped crystals. Betafite crystallizes in the isometric symmetry class and forms large octahedral and dodecahedral crystals that can weigh up to 100 kg. Frequently they are modified by other isometric forms and/or flattened when two opposing faces dominate the crystal. Well formed crystals of betafite are considered classics!