Wiktionary
mundite
n. (context mineralogy English) An orthorhombic mineral containing aluminum, hydrogen, oxygen, phosphorus, and uranium.
Wikipedia
Mundite
Mundite is a uranium phosphate mineral with chemical formula: Al(UO)(PO)(OH)ยท5(HO). It contains aluminium and has a yellow tinge to it. It usually appears on sandstones or limestones.