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Franklinite, zinc oreA granular rock composed of white calcite, dull green willemite, red zincite and black franklinite (Zinc Iron Manganese Oxide). See T00387 for a fluorescent view
Metals including galena, cerussite and zinc.. Chromolithograph from Dr. Adolph Kenngotts Mineralogy section in Gotthilf Heinrich von Schuberts Natural History, Schreiber, Munich, 1886
Zincite comprises of (zinc oxide). It is an important ore of zinc, and almost exclusive to one mining locality in New Jersey, U.S.A. Specimen from the Natural History Museum, London
Franklinite, fluorescingOre of zinc fluorescing under ultra violet radiation: calcite - pink; willemite - green; zincite - blue; franklinite - black. See image number 388 for white light view