Specimen Number40-8-012Alternate Number82-30-3CommentsMagnetite-chert facies of Negaunee Formation; too lean for ore.In Teaching CollectionNoMineral(s)magnetitechertRock NamebifDistrictMarquette RangeMineEmpire, MIExternal LinkMindatDeposit TypeBIFGeo-Coords[1] Donated ByUniversity of Wisconsin-Madison Department of Geoscience
40-8-012: bif - Michigan District - Empire, MI Mine. Franklin College Collections, accessed 13/11/2026, https://digitalcollections.franklin.uga.edu/nodes/view/57859