Cuprosklodowskite is a secondary uranium

Uranium

Uranium is a silvery-white metallic chemical element in the actinide series of the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons...

 mineral formed by alteration of earlier uranium minerals. Its empirical formula is Cu[(UO₂)(SiO₂OH)]₂•6(H₂O). It was named in the mistaken belief that the mineral was the copper analogue of sklodowskite, which in turn was named for Marie Curie

Marie Curie

Marie Skłodowska-Curie was a physicist and chemist famous for her pioneering research on radioactivity. She was the first person honored with two Nobel Prizes—in physics and chemistry...

 (née Maria Sklodowska) (1867–1934). Cuprosklodowskite is a nesosilicate mineral, It is grass green to dark green in color, and its crystal habit

Crystal habit

Crystal habit is an overall description of the visible external shape of a mineral. This description can apply to an individual crystal or an assembly of crystals or aggregates....

 is typically acicular flat bladed crystals.

Cuprosklodowskite was discovered in 1933 at the Kalongwe deposit in (then) Katanga province, Democratic Republic of Congo (Zaïre), the type locality

Type locality (geology)

Type locality , also called type area or type locale, is the where a particular rock type, stratigraphic unit, fossil or mineral species is first identified....

. Cuprosklodowskite is a strongly radioactive mineral.