Mine detail: Ravenna Mine

Previously called 'QuincyBristol'

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Location: Iron County, Michigan, United States, North America
Lat / long: 46.10611, -88.35198
dep_id: 10079372
mrds_id: W028628
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: Structurally controlled in a synclinal body.
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: 1911
yr_lst_prd: 1917
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. 121.
  • Deposit:: CROWELL, BENEDICT, AND MURRAY, C.B. INC., 1914, 1917, THE IRON ORES OF LAKE SUPERIOR (2ND, 3RD EDS.): CLEVELAND, OHIO. P. 213, 269-270 RESPECTIVLY.
  • Deposit:: JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 282-285, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
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