is an Hydrated Copper Uranyl Silicate with formula Cu(UO2)2Si2O7 – 6H2O and hardness of 4.
Uranophane is Hydrated Calcium Uranyl Silicate with formula Ca(UO2)2Si2O7 – 6H2O and hardness of 2-3.
Both are HIGH radioactive minerals and are found in the Musonoi Mine,Congo. Very small cavities may be seen on surface.
Size: 14x10x6.1 mm.
Weight: 6.90 ct.