copper sulfide

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Scope note
Broadly refers to any sulfide of copper, more specifically to the blackish crystalline sulfide CuS used in textile dyeing and as a black pigment in ancient painting. The presence of copper sulfide on the surface of ancient bronze artifacts has generated much debate over whether it should be seen as symptomatic of copper corrosion or as an intentional patination technique.
copper sulfide
Accepted term: 15-Jul-2024