Spiky specimen of Vanadinite var. Arsenatian Vanadinite with distinctive and uncommon appearance from Erupcion Mine, Los Lamentos Mts, Mexico. The Arsenatian Vanadinite  was called Endlichite and was considered a species before, but is now considered as an Arsenic-bearing variety of Vanadinite. Displays a dense cluster of waxy brown crystals. They are from lustrous to matt needle crystals growing in sheaves. Displays on both sides. In good condition - some small damages.

Pleasing!