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Coeruleolactite: (Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O)
Comments: Hexagonal green crystal of coeruleolactite with brownish surface coating. Location: Turquoise Mine, Cripple Creek, Cripple Creek District, Teller Co., Colorado, USA. Scale: 12x5x4 mm. © John Betts - Fine Minerals