A green patina or crust of copper sulfate or copper chloride formed on copper, brass, and bronze exposed to air or seawater for long periods of time.
Karl Knappe’s “Hagar,” a bronze from 1923, twisted like knotted rope, has been left with its green patina of rust and rubble, making it almost impossible to decipher, save as evidence of its fate.
The structure of Flyover is made from bronze, which has a green patina and its form is a little like a gazebo, folly or pergola.
Ancient bronze animal are covered in vivid green patina.
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