Torbernite
Torbernite is a green, crystalline mineral that primarily consists of copper, uranium, and phosphate. It is a secondary mineral that forms in the oxidation zones of uranium deposits. Its chemical formula is Cu(UO2)2(PO4)2·8H2O, indicating it contains water molecules in its structure.
This mineral is often found in association with other uranium-bearing minerals and can be identified by its distinctive emerald-green color and glassy luster. Due to its uranium content, Torbernite is radioactive and should be handled with care. It is sometimes collected by mineral enthusiasts and can be used in educational settings to teach about radioactivity and mineralogy.