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Hardystonite: Ca2ZnSi2O7 Esperite: PbCa3Zn4(SiO4)4 Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4
Comments: Pale brown porcelaneous esperite with pinkish gray hardystonite and black franklinite. Location: Franklin, Sussex County, New Jersey. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species