A tabular green crystal of paddlewheelite in a vug of dolomite and chalcopyrite. Collected by myself and Jakub Plá?il Sep 2016, shortly after the 500th anniversary of Jáchymov; The name was chosen to reflect its unique structure that contains fourling paddlewheel units built from uranyl tricarbonate clusters (see child photos). The paddlewheels have square pyramidal copper "axles," with a cubic calcium cation "gearbox."; Locality: Svornost Mine, Jáchymov, Jáchymov District, Karlovy Vary Region, Czech Republic; Fov: 1.7 mm;
Copyright: Travis Olds