| Lat / long: | 46.47583, -87.66502 |
| Primary: | Iron |
| Ore: | Hematite, Magnetite, Goethite |
| Gangue: | Quartz |
| Orebody form: | STRATABOUND |
| Discovery year: | 1844 |
| Operation type: | Surface-Underground |
| Deposit type: | Bedded, Chemical Sediment |
| Production size: | Medium |
| Development status: | Past Producer |
| Production years: | 1864-1922, EXCEPT FOR 1916 AND 1921. |
| First production started: | 1864 |
| Last production ended: | 1922 |
| Host rock: | Negaunee Iron-Formation |
| Host type: | Iron Formation |
| Structure: | Westward plunging synclinorium open at western end; regional trends are eas |
| Alteration processes: | Some magnetite formed by replacement of ferrous iron minerals during diagenesis and most iron silicate probably formed by metamorphism of an early silicate mineral. |
| MRDS | W062097 |
| DEP | 10082747 |
| Reference | {Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES, 2D ED.: CLEVELAND, OHIO, LAKE SUPERIOR IRON ORE ASSOCIATION, 334 P.}{Deposit:: MOST ALL OF THIS DISTRICT HAS BEEN MAPPED AT 7 1/2 MINUTE QUADRANGLE SIZE. TOO MANY GEOLOGISTS HAVE BEEN INVOLVED TO MENTION INDIVIDUALLY. GAIR, J.E., 1975, BEDROCK GEOLOGY AND ORE DEPOSITS OF THE PALMER QUADRANGLE, MARQUETTE COUNTY, MICHIGAN: U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 769, 159 P.}{Production:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES: CLEVELAND, OHIO, 2D ED., 75-92 P.} |
| Reporter | Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T. |