Hierarchy classification:

1. top of the aat hierarchies
2. Physical Attributes Facet
3. Conditions and Effects (hierarchy name)
4. [conditions and effects by specific type]
5. patina (condition)

Anotations

Scope note:

Term used in a general sense to refer to various types of copper corrosion. Even though "verdigris" technically chemically refers only to basic copper acetate, the term is also used for natural green patinas composed of copper sulfate, copper chloride, or basic copper carbonate.