A rare sulfosalt mineral containing copper, lead, and other elements, related to boulangerite.
From epi- (upon, indicating a secondary form) + boulangerite (a mineral named after Jean-Baptiste Boulangerite). The prefix indicates it's a variant or alteration of the original mineral.
Epiboulangerite shows how minerals can be altered by heat and pressure deep in the Earth—it's like nature creating a sequel mineral from an original rock!
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