Zeunerite is a green copper uranium arsenate mineral, and is a member of the autunite group.

Zeunerite occurs as a secondary mineral in the oxidized weathering zone of hydrothermal uranium ore deposits which contain arsenic. Olivenite, mansfieldite, scorodite, azurite and malachite are found in association with zeunerite.

It was first described in 1872 for an occurrence in the Schneeberg District, Ore Mountains, Saxony, Germany. It was named for Gustav Anton Zeuner (1828–1907).

These small green crystals are on a host of purple fluorite.