Mine detail: Northwestern Mine

<< Back to the map

<< Back to browsing

Location: Dickinson County, Michigan, United States, North America
Lat / long: 45.99833, -87.84059
dep_id: 10082694
mrds_id: W062044
Commodity type: metallic
Major mineral: Iron
Operation type: Underground
Deposit type: Banded Iron-Rich Sedimentary Deposits
Production size: Small ammount of material produced
Development status: Past Producer
ore: Hematite, Magnetite, Goethite
gangue: Quartz
orebody_fm: STRATABOUND
work_type: Underground
model: 241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
alteration: Leaching of silica or replacement by iron oxides or a combination of these processes.
conc_proc: Metamorphism of Vulcan iron formation has locally increased grain size and made some material more amenable to concentration than less metamorphosed iron formation.
Reporter: Sutphin, D.M. (Cannon, W.F.), Mason Jr., G.T.
hrock_unit: Vulcan Iron Formation
hrock_type: Iron Formation
Structure: Major troughs into which Iron fm. has slumped; regional trends are E-W to N
Year first produced: 1883
yr_lst_prd: 1903
disc_yr: 1849
prod_yrs: 1883-1884, AND 1902-1903.
References:
  • Deposit:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, LAKE SUPERIOR IRON ORES, 2D ED.: CLEVELAND, OHIO, LAKE SUPERIOR IRON ORE ASSOCIATION, 334 P.
  • Deposit:: BAYLEY, R.W., AND OTHERS, 1966, GEOLOGY OF THE MENOMINEE IRON-BEARING DISTRICT, MICHIGAN AND WISCONSIN: U.S.G.S. PROFESSIONAL PAPER 513, 96 P. VAN HISE, C.E.., AND LEITH, C.E.., 1911, THE GEOLOGY OF THE LAKE SUPERIOR REGION: U.S.G.S MONOGRAPH 52, 641 P.
  • Production:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 107-128.
© 2010-2018 Lee C. Baker unless noted. All rights reserved.