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Inyoite: Ca2B6O6(OH)10·8(H2O)
Comments: Glassy gray translucent crystals of inyoite 1.5 cm.+, with minor alteration to white meyerhofferite. Location: Loma Blanca Mine, Jujuy Province, Argentina. Scale: 5.2x4.1x3.1 cm. © Richard Dale / Dale Minerals