Childrenite is a rare hydrated phosphate mineral, manganese , oxygen. Its chemical formula is (Fe2+,Mn)2+ AlPO 4(OH) 2•H 2O and it has a molecular weight of 229.83 g/mol. Its specific gravity is 3.2 and it has a Mohs hardness and non-fluorescent. It has a vitreous lustre with a white streak, and is brown or yellow in color. It has a conchoidal, and an orthorhombic crystal system.