Cuprosklodowskite is a secondary uranium mineral formed by alteration of earlier uranium minerals. Its empirical formula is Cu(UO2)2(HSiO4)2·6(H2O). Cuprosklodowskite is a nesosilicate mineral, It is grass green to dark green in color, and its crystal habit is typically acicular , flat bladed crystals. It is a strongly radioactive mineral.
Cuprosklodowskite was discovered in 1933 at the Kalongwe deposit in (then) Katanga province , the type locality. It was named in the mistaken belief that the mineral was the copper analogue of sklodowskite , which in turn was named for Marie Skłodowska Curie (1867–1934).
It occurs in association with becquerelite , brochantite, vandenbrandeite and compreignacite