Ewingite

Mg₈Ca₈(UO₂)₂₄(CO₃)₃₀O₄(OH)₁₂(H₂O)₁₃₈IMA symbol: Ewgapproved

Ewingite is a mineral with the formula Mg8Ca8(UO2)24(CO3)30O4(OH)12(H2O)138, crystallizing in the tetragonal system.

Physical properties

Molecular weight	11550.19 g/molcalculated from the IMA formula
Composition (wt%)	Mg 1.68%, Ca 2.78%, U 49.46%, O 40.45%, C 3.12%, H 2.51%