2024-10-112024-10-11https://hdl.handle.net/11299/265983Manganese oreUS Steel Corporation / Ralph Marsden Iron Ore CollectionCountry = USAState = ArizonaLocality = Pita Gulch TunnelUniversity of Minnesota DuluthBox # = 26Storage Box # = 37US Steel Corporation / Ralph Marsden Iron Ore Collection - Sample #422Image