Michigan · Iron County
Past Producer

Bristol-Youngstown Mine

Iron County, Michigan, United States
Iron
⌖ Show on mapUSGS source ↗
Commodities
PrimaryIron
Commodity typeM
Deposit
Deposit typeSecondary Enrichment
Model241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Deposit sizeU
WorkingsSurface/Underground
Orebody formSTRATABOUND
Ore controlStructurally controlled on flank of anticline.
Materials
Ore mineralsHematite, Goethite
GangueChert, Pyrite, Siderite, Stilpnomelane, Chlorite, Mica
Geology
Host rockIron Formation · Negaunee Iron-Formation
StructureMajor troughs ; regional trends: E-W, NW-SE, NE-SW, forming triangle, Troughs into which Iron formation has slumped.
AlterationChert and siderite to hematite and goethite in oxidation zones
Economic & production
Development statusPast Producer
First production1890
Last production1969
Identification
Deposit ID10110360
MRDS IDW001401
Alternate namesClaire Mine, Clare Mine
RegionNA
Data scoreB
Coordinates46.10778, -88.34948
References
MINERAL INDUSTRY OF MICHIGAN, 1969; 1971 ANNUAL STATISTICAL SUMMARY 13 U. S. B. M. 1969 MINERALS YEARBOOK.JAMES, DUTTON, PETTIJOHN, AND WIER, 1968, GEOL. AND ORE DEPOSITS OF THE IRON RIVER - CRYSTAL FALLS DIST., U. S. G. S. PROF. PAPER 570, P. 134JAMES, H. L., 1955, ZONES OF REGIONAL METAMORPHISM IN THE PRECAMBRIAN OF NORTHERN MICH., G. S. A. BULL., V. 66, P. 1455-1488.DUTTON, C. E. AND P. W. ZIMMER, 1968, IRON ORE DEPOSITS - MENOMINEE DIST., MICH., IN ORE DEP. U. S. 1933-1967, THE GRATON-SALES VOL., J. D. RIDGE, ED., V. 1, P. 538-549.JAMES, H. L., DUTTON, C. E., PETTIJOHN, F.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, 1952, LAKE SUPERIOR IRON ORES (2ND ED.): CLEVELAND, OHIO. P. 109.CROWELL, BENEDICT, AND MURRAY, C. B., INC., 1911, 1914, 1920, 1923, 1927, 1930, THE IRON ORES OF LAKE SUPERIOR (1ST, 2ND, 4TH, 5TH, 6TH AND 7TH EDS.): CLEVELAND, OHIO. PP. 105-106; 188-189; 219-220; 269-270; 289-290; 260 RESPECTIVELY.HANNA, T. A., 1902, STATE OF MICHIGAN MINES AND MINERAL STATISTICS, MARQUETTE, MICHIGAN. P. 79.JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 41-45, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.THE MINERAL INDUSTRY OF MICHIGAN, 1969; 1971, P. 10