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Samfowlerite: Ca14Mn++3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6
Comments: SEM image of typical crystals of samfowlerite. (CanMin, v32:43). Location: Franklin mine, in Franklin, Sussex County, New Jersey, USA. Scale: Picture Size 0.7 µm. © Canadian Mineralogist