Specimen Number40-7-036Alternate Number67-1-9CommentsSiderite + magnetite + chert-bearing BIF. C unit of Negaunee Formation.In Teaching CollectionNoMineral(s)sideritemagnetitechertRock NameFe oreDistrictMarquette RangeMineEmpire, MIExternal LinkMindatDeposit TypeBIFGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience
40-7-036: Fe ore - Michigan District - Empire, MI Mine. Franklin College Collections, accessed 14/11/2026, https://digitalcollections.franklin.uga.edu/nodes/view/57848