Mine detail: Norwood Mine

Previously called 'Northrup'

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Location: Baraga County, Michigan, United States, North America
Lat / long: 46.53806, -88.1706
dep_id: 10079319
mrds_id: W028541
Commodity type: metallic
Major mineral: Iron
Operation type: Underground
Deposit type: Secondary Enrichment
Production size: Small ammount of material produced
Development status: Past Producer
ore: Limonite, Grunerite
gangue: Chert, Magnetite, Hornblende, Actinolite, Garnet, Mica
alteration: Replacement of cherty beds by iron oxide and alteration of fe-silicates and carbonates to iron oxides
conc_proc: Supergene enrichment by removal of chert
ore_ctrl: Upward facing or open structures of folding or faulting
Reporter: Yeager, Keith (Cannon, W.), Sutphin, D.M., Mason Jr., G.T., Anderson, Arlene (M. Gere)
hrock_unit: Bijiki Iron-Formation
hrock_type: Iron Formation
Year first produced: 1887
yr_lst_prd: 1888
References:
  • Deposit:: KLASNER, J. S., AND CANNON, W. F., 1978 , BEDROCK GEOLOGY OF THE SOUTHERN PART OF THE MICHIGAMME AND THREE LAKES QUADRANGLES, MARQUETTE AND BARAGA COUNTIES, MICHIGAN, USGS MAP 1 - 1078 .
  • Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1938 , LAKE SUPERIOR IRON ORES ( 1ST ED. ): CLEVELAND, OHIO, P. 115 .
  • Deposit:: SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, CLEVELAND-CLIFFS IRON CO, OHIO MINE EXPLORATION, 1950 - 1951 , SECTION FILES OF THE GEOLOGICAL SURVEY DIVISION OF MICHIGAN DEPT. OF NATURAL RESOURCES.
  • Deposit:: JOHNSON, A., 1998, INVENTORY OF UNDERGROUND MINES, BARAGA COUNTY, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
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