Mine detail: National Steel Pellet Plant Mine

<< Back to the map

<< Back to browsing

Location:	Itasca County, Minnesota, United States, North America
Lat / long:	47.42332, -93.06911
dep_id:	10072837
mrds_id:	W018523
Commodity type:	metallic
Major mineral:	Iron
Operation type:	Unknown
Production size:	Large ammount of material produced
Development status:	Past Producer
ore:	Ankerite, Magnetite, Minnesotaite, Siderite
gangue:	Calcite, Chert
orebody_fm:	LINEAR
alteration:	Metamorphism In East Mesabi Range. French (1973) Identified Three Distinct Mineral Assembleges Related To Temperature And Pressure Conditions.
conc_proc:	Banded Iron Fm. Deposited As Iron-Rich Chemical Sediment Of Possible Organic Influenced Origin (Laberge, 1973, Garrels, Et Al, 1973)
ore_ctrl:	Inavailability Of Free Oxygen Allowing Ferrous Oxides To Form. Advent Of Photosynthetic Eucaryotic Organisms Releasing O2 2 B.Y. Ago Upset The Oxygen Poor Environment Required For Continued Ferrous Iron Deposition (Garrells, Et Al, 1973).
Reporter:	Schneider, Norma J., Schneider, Norma J. (Orris, Greta J.), Mason Jr., G.T.
hrock_unit:	Biwabik Iron Formation
hrock_type:	Iron Formation
References:	Deposit:: MOREY, G.B.,1972. MESABI RANGE; IN; SIMS,P.K. AND MOREY, G.B.,EDS., GEOLOGY OF MINNESOTA; A CENTENNIAL VOLUME,MINN.GEOL.SURV.,P.204-217. Deposit:: WHITE, D.A.,1954. STRATIGRAPHY AND STRUCTURE OF THE MESABI RANGE, MINNESOTA, MINN.GEOL.SURV.BULL.38, 92P. Deposit:: BAYLEY, R.W. AND JAMES, H.L., 1973, ECON. GEOL. V. 68, N. 7, PP. 934-1004. Deposit:: FRENCH, B.V., 1973, ECON. GEOL. V.68, N. 7, PP. 1063-1074. Deposit:: LA BERGE, G.L., 1973, ECON. GEOL., V. 68, N. 7, PP. 1098-1109. Deposit:: GARRELS, R.M., PERRY, E.A., AND MACKENZIE, F.J., 1973, ECON. GEOL., VOL. 68, N. 7, PP. 1173-1179. Production:: W. D. TRETHEWEY, MINN. MINING DIR. 1974, 1978, 1980