Largest Crystal Size: 2.17 mm
2.17 mm tuft of blue-blue dark Connellite crystals.
Photo Matteo Chinellato
Connellite is a rare mineral species, a hydrous copper chloro-sulfate. It occurs as tufts of very delicate acicular crystals of a fine blue color, and is associated with other copper minerals of secondary origin, such as cuprite and malachite. Soluble in acids and in ammonium hydroxide. Insoluble in water.