Autunite (mineral)

Autunite crystals, a selection of specimens of this crystallized mineral species. Autunite is a mineral with many collector’s items presented here with a description, one or more photos and sometimes a video. These autunites are for sale.
Uranium-calcium phosphate hydrate, chemical formula Ca(UO2)2(PO4)2 – 10-12 H2O, quadratic crystal system. It’s a radioactive mineral.