A uranium-containing mineral which occurs as soft yellow crystals.
Weeksite is a hydrated silicate and oxide of uranium and potassium, K2(UO2)2(Si2O5)3·4H2O, often containing other elements, especially barium. Crystal system: orthorhombic..
Origin
1960s. From the name of Alice Mary Dowse Weeks, United States mineralogist + -ite.