Mine detail: Spies-Johnson Mine

Previously called 'Spies-Virgil'

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Location: Iron County, Michigan, United States, North America
Lat / long: 46.11, -88.63672
dep_id: 10106122
mrds_id: W028944
Commodity type: metallic
Major mineral: Iron
Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Unknown
Development status: Past Producer
ore: Hematite, Goethite
gangue: Chert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica
model: 241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
alteration: Chert and siderite to hematite and goethite in oxidation zones
ore_ctrl: Stratigraphically controlled.
Reporter: Yeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)
hrock_unit: Riverton Iron-Formation
hrock_type: Iron Formation
Year first produced: 1912
yr_lst_prd: 1956
References:
  • Deposit:: JAMES, H.L., DUTTON, C.E., PETTIJOHN, F.J., WIER, K.L., 1968, GEOLOGY AND ORE DEPOSITS OF THE IRON RIVER, CRYSTAL FALLS DISTRICT, IRON COUNTY, MICHIGAN. WASHINGTON, U.S. GOVT. PRINTING OFFICE, 1968. PP. 45-56, 88-110.
  • Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO. P. 122.
  • Deposit:: CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1917, 1927, 1930, THE IRON ORES OF LAKE SUPERIOR (3RD, 6TH, 7TH EDS.): CLEVELAND, OHIO. PP. 273, 318-319, 286-287 RESPECTIVLY.
  • Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 311-319, MICHIGAN DEPARTMENT OF NATURAL RESOURCES
  • Production:: TOTAL INCLUDES TOTAL FROM SPIES, VIRGIL, AND JOHNSON MINING PERIODS
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