| Deposit ID | 10072842 |
|---|---|
| MRDS ID | W018531 |
| Record type | Site |
| Current site name | Northland Mine |
| Geographic coordinates: | -93.91081, 46.54666 (WGS84) |
|---|
Political divisions (FIPS codes)
Crow Wing(county)
Minnesota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Cuyuna(quadrangle 1:24,000 scale)
Aitkin(quadrangle 1:100,000 scale)
Duluth(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Elk-Nokasippi(hydrologic unit)
Mississippi Headwaters(hydrologic accounting unit)
Mississippi Headwaters(hydrologic subregion)
Upper Mississippi(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Minnesota | Crow Wing |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 47N | 28W | 20 | Minnesota |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Manganese Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Hematite | Ore |
| Magnetite | Ore |
| Chert | 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 | ||||
| Rock unit name | Trommald Formation | ||||
| |||||
| (1) | -93.91081, 46.54666 |
|---|
| Type of structure | Regional |
|---|---|
| Structure name | Folds |
| Type of structure | Local |
| Structure name | Folds |
| General form | LINEAR TO IRREGULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| District name | Cuyuna Range |
|---|
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1958 | ||||||||||||||
| Total resources | 39118mt ore | ||||||||||||||
| |||||||||||||||
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1958 | ||||||||||||||
| Total resources | 25740mt ore | ||||||||||||||
| |||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W018531 |
GROUT, F.F. AND WOLFF, J.F.,SR.,1955. THE GEOLOGY OF THE CUYUNA DISTRICT, MINNESOTA, MINN.GEOL.SURV.BULL. 36, 144P.
GROSS, G.A., 1984, ENRICHED IRON FORMATION, IN ECKSTRAND, O.R., ED., CANADIAN MINERAL DEPOSIT TYPES--A GEOLOGICAL SYNOPSIS: GEOLOGICAL SURVEY OF CANADA ECONOMIC GEOLOGY REPORT 36 , P. 20.
| Subject category | Comment text |
|---|---|
| Deposit | GROSS (1984) LISTS DEPOSITS IN THE CAYUNA AND MESABI RANGES, MN, AND MARQUETTE RANGE, MI, AS EXAMPLES OF THE ENRICHED IRON FORMATION DEPOSIT MODEL. THESE DEPOSITS OCCUR AS RESIDUAL IRON OXIDE MASSES FORMED BY SECONDARY ENRICHMENT PROCESSES INVOLVING OXIDATION OF THE IRON AND LEACHING OF THE SILICEOUS MINERALS THROUGH THE ACTION OF DEEPLY CIRCULATING GROUNDWATER IN FRACTURES AND MORE PERMEABLE PARTS OF IRON FORMATIONS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1984 | Sutphin, David M. | U.S. Geological Survey | |
| Updater | 01-MAR-1997 | Sutphin, David M. | U.S. Geological Survey | |
| Editor | 01-MAY-1997 | Mason Jr., G.T. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.