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Pseudoboleite: Pb5Cu4Cl10(OH)8·2(H2O)
Comments: Blue crystal of pseudoboleite. Location: Curuglu Mine, Santa Rosalía (El Boleó), Boleó District, Mun. de Mulegé, Baja California Sur, Mexico. Scale: Crystal size 4.5 mm. © Thomas Witzke / Abraxas-Verlag