Clinoatacamite

Occurs in Pinal County.

Chemical Formula: Cu₂(OH)₃Cl

Specific Gravity: 3.5-3.6

Luster: Vitreous to dull

Hardness: 4-4.5

Clinoatacamite is a copper chloride hydroxide mineral that often forms as green crystals or crusts. It is found in the oxidized zones of copper deposits.

Next Pinal County mineral: Clinoclase