Chalcanthite
![](/Images/godic/202501/03/Chalcanthite0647.jpg")
![Chalcanthite on limonite from Washington Camp, Santa Cruz County, Arizona (size: 5.5 x 2.9 x 1.5 cm)](/Images/godic/202501/03/Chalcanthite-414050647.jpg")
![Crystal structure of chalcanthiteColor code:
:Copper, Cu: brown
:Sulfur, S: olive
:Oxygen, O: red
:Cell: cyan](/Images/godic/202501/03/Chalcanthite_crystal_structure0647.png")
Chalcanthite, whose name derives from the Greek, chalkos and anthos, meaning copper flower, is a richly-colored blue/green water-soluble sulfate mineral CuSO4·5H2O. It is commonly found in the late-stage oxidation zones of copper deposits. Due to its ready solubility, chalcanthite is more common in arid regions.