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Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4 Rinmanite: (Zn,Mn)2Sb2Mg2Fe4O14(OH)2
Comments: B&W image (reflected light) of a polished section of rinmanite and franklinite (white) with associated silicates. Location: Garpenberg Norra Zn-Pb mine, Hedemora, Dalarna, in south-central Sweden. (CanMin, v39:1675). Scale: Scale Bar 0.2 mm. © Canadian Mineralogist
Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4
Comments: Black, octahedral franklinite crystals to 1.4 cm across on white calcite. Location: Franklin, Sussex County, New Jersey, USA. Scale: 2.9 x 2 cm. © John Veevaert
Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4 Esperite: PbCa3Zn4(SiO4)4 Hardystonite: Ca2ZnSi2O7
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