Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeS
WorkingsUnderground
Ore controlStructurally controlled in synclinal body.
Materials
Ore mineralsHematite, Goethite
GangueChert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica
Geology
Host rockIron Formation
AlterationChert and siderite to hematite and goethite in oxidation zones.
Economic & production
Development statusPast Producer
First production1907
Last production1915
Identification
Deposit ID10079377
MRDS IDW028635
Alternate namesJunietta, Juniette, Juniata
RegionNA
Data scoreB
Coordinates46.08861, -88.32921
References
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.LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES (1ST CD.): CLEVELAND, OHIO. PP. 156.CROWELL, BENEDICT, AND MURRAY, C.B., INC., 1911, 1919, 1917, THE IRON ORES OF LAKE SUPERIOR (1ST, 2ND, 3RD EDS.): CLEVELAND, OHIO. PP. 118-119, 202-203, 259 RESPECTIVLY.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 225-227, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.