| Deposit ID | 10106116 |
|---|---|
| MRDS ID | W028658 |
| Record type | Site |
| Current site name | Mansfield Mine |
| Related records | 10310202 |
| Geographic coordinates: | -88.21921, 46.11556 (WGS84) |
|---|
Political divisions (FIPS codes)
Iron(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Lake Mary(quadrangle 1:24,000 scale)
Iron River(quadrangle 1:100,000 scale)
Iron River(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Michigamme(hydrologic unit)
Northwestern Lake Michigan(hydrologic accounting unit)
Northwestern Lake Michigan(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Iron |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Michigan | 043N | 031W | 20 | NW OF NW | Michigan |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Materials | Type of material |
|---|---|
| Hematite | Ore |
| Grunerite | Ore |
| Limonite | Ore |
| Mica | Gangue |
| Chlorite | Gangue |
| Pyrite | Gangue |
| Rutile | Gangue |
| Stilpnomelane | Gangue |
| Siderite | Gangue |
| Model code | 241 |
|---|---|
| USGS model code | 34a |
| Deposit model name | Superior Fe (BC name is Lake Superior & Rapitan types iron-formation) |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Chemical Sediment > Iron Formation | ||
| |||
| (1) | -88.21921, 46.11556 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1890 |
| Year of last production | 1913 |
| District name | Menominee Range |
|---|
| Ownership category | State |
|---|
| Year | 1913 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1890-1913 | ||||||||||||||
| Material | ore Fe | ||||||||||||||
| Ore mined | 1485904mt | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
BAYLEY, R. W., 1959, GEOLOGY OF THE LAKE MARY QUADRANGLE,IRON COUNTY, MICHIGAN. WASHINGTON, U.S. GOVT. PRINTING OFFICE, 1959 PP. 40-44.
LAKE SUPERIOR IRON ORE ASSOCIATION, 1938, LAKE SUPERIOR IRON ORES (1ST ED.): CLEVELAND, OHIO. P. 158.
CROWELL, BENEDICT, AND MURRAY, C. B., INC, 1911, 1914, THE IRON ORES OF LAKE SUPERIOR (1ST, 2ND EDS.): CLEVELAND, OHIO. PP. 121, 205 RESPECTIVELY.
SECTION FILES, MICHIGAN GEOLOGICAL SURVEY, OLIVER IRON MINING CO., SECTION FILES OF THE GEOLOGICAL SURVEY DIVISION OF THE MICHIGAN DEPARTMENT OF NATURAL RESOURCES, LANSING, MICHIGAN.
JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, IRON COUNTY, P. 247-250, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
| Subject category | Comment text |
|---|---|
| Deposit | FIRST OPENED 1890, SHIPPED THROUGH 1913 EXCEPT 1894-1896, 1906 AND 1912. FORMERLY OPERATED BY OLIVER MINING CO. THE MINE WAS WORKED BY UNDERGROUND METHOD. THE MANSFIELD IRON BEARING SLATE MEMBER OF THE HEMLOCK FORMATION IS VARIABLE IN APPEARANCE, WHICH IS DIRECTLY RELATED TO ITS DISTANCE FROM THE WEST KIERNAN SILL AND THE DEGREE OF RFIRST OPENED 1890, SHIPPED THROUGH 1913 EXCEPT 1894-1896, 1906 AND 1912. FORMERLY OPERATED BY OLIVER MINING CO. THE MINE WAS WORKED BY UNDERGROUND METHOD. THE MANSFIELD IRON BEARING SLATE MEMBER OF THE HEMLOCK FORMATION IS VARIABLE IN APPEARANCE, WHICH IS DIRECTLY RELATED TO ITS DISTANCE FROM THE WEST KIERNAN SILL AND THE DEGREE OF RESULTING METAMORPHISM AND WEATHERING. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1980 | Yeager, Keith (Cannon, W.) | Michigan Geological Survey Division | |
| Updater | 01-MAR-1997 | Sutphin, D.M. | U.S. Geological Survey | |
| Editor | 01-MAY-1997 | Mason Jr., G.T. | U.S. Geological Survey | |
| Updater | 10-AUG-2001 | Anderson, Arlene (M. Gere) | Michigan Department of Natural Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.