Home / Explore / Minerals / Franklinfurnaceite Minerals Franklinfurnaceite franklinfurnaceite Ca2Fe³⁺Mn²⁺3Mn³⁺(Zn2Si2O10)(OH)8 Franklinfurnaceite Mineral Specimen For Sale — via www.dakotamatrix.com · Source Overview Franklinfurnaceite is a mineral species (phyllosilicate mineral). Nickel–Strunz class: 9.EC.55. Scientific references Franklinfurnaceite — Wikidata. https://www.wikidata.org/wiki/Q3752043 Link