| Deposit ID | 10122553 |
|---|---|
| MAS/MILS ID | 0261030102 |
| Record type | Site |
| Current site name | Stephenson Mine |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -87.46891, 46.2778 (WGS84) |
| Elevation | 364 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
Marquette(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Gwinn(quadrangle 1:24,000 scale)
Gwinn(quadrangle 1:100,000 scale)
Marquette(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Escanaba(hydrologic unit)
Northwestern Lake Michigan(hydrologic accounting unit)
Northwestern Lake Michigan(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Marquette |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Michigan | 045 N | 025 W | 20 | NWSWSW | Michigan |
| Commodity | Importance |
|---|---|
| Iron | Tertiary |
| Main Entrance (1) | -87.46891, 46.2778 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1904 |
| Year of first production | 1907 |
| District name | Marquette Iron District |
|---|
| Type of mineral rights | Private Lease |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Cleveland-Cliffs Iron Co. |
| Interest | 100 |
| Home office | Michigan |
| Year | 1976 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0261030102 |
LAKE SUPERIOR IRON ORES, MINING DIRECTORY AND STATISTICAL RE
PUBLISHED BY THE LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P
| Subject category | Comment text |
|---|---|
| Deposit | 3,844,233 TONS OF SOFT, RED, HIGH PHOSPHOROUS ORE WERE SHIPP THIS MINE FROM 1907-1941. GREATEST DEPTH OF WORKINGS WAS 604 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 03-NOV-1983 | Eastern Field Operations Center (EFOC) | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:
Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.