Caledonite n. : A hydrous sulphate of copper and lead, found in some parts of Caledonia or Scotland.

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Taxonomy
Caledonite, minerals, deletion, consensus, free encyclopedia, copper, deposits, crystals, blue-green color, mines, cerussite, secondary copper minerals, search, templates, Pb, crystal habit, prismatic, tabular.

Defination from the web:
Caledonite, whose name derives from Caledonia, the historical name of its place of discovery (Scotland), is a richly colored blue-green sulfate ... Caledonite, when developed into full crystals, can have a deep blue-green color reminiscent of secondary copper minerals. ...