| Deposit ID | 10068374 |
|---|---|
| MRDS ID | W001400 |
| Record type | District |
| Current site name | Iron River - Crystal Falls Area |
| Geographic coordinates: | -88.65005, 46.08333 (WGS84) |
|---|---|
| Relative position | BETWEEN TOWNS OF IRON RIVER AND CRYSTAL FALLS. |
Political divisions (FIPS codes)
Iron(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Iron River(quadrangle 1:24,000 scale)
Iron River(quadrangle 1:100,000 scale)
Iron River(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Brule(hydrologic unit)
Northwestern Lake Michigan(hydrologic accounting unit)
Northwestern Lake Michigan(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Iron |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Materials | Type of material |
|---|---|
| Hematite | Ore |
| Limonite | Ore |
| Goethite | Ore |
| Siderite | Gangue |
| Chert | Gangue |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Chemical Sediment > Iron Formation | ||
| Rock unit name | Riverton Iron-Formation | ||
| Rock description | Riverton Iron-Formation | ||
| |||
| (1) | -88.65005, 46.08333 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Major troughs ; regional trends: E-W, with local variations. |
| Type of structure | Local |
| Structure description | Troughs into which Iron formation has slumped. |
| Thickness | 180M |
|---|
| Operation type | Surface-Underground |
|---|---|
| Development status | Producer |
| Commodity type | Metallic |
| Significant | No |
| Year | 1961 |
|---|---|
| Period | 1882-1961 |
| Material | ore Fe |
| Ore mined | 201396766mt |
| Accuracy | Accurate |
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, ET. AL., 1968, U. S. G. S. PROF. PAPER 570, P. 88
| Subject category | Comment text |
|---|---|
| Deposit | ARCHEAN CRYSTALLINE ROCKS OVERLAIN BY PALEOPROTEROZOIC SEDIMENTARY ROCKS. DURING PALEOPROTEROZOIC TIME, ARCHEAN ROCKS BLOCK FAULTED AND DIFFERENTIALLY RAISED; LOWERED; FORMING TROUGHS. PALEOPROTEROZOIC ROCKS AS SEDIMENTS SLUMPED INTO TROUGHS. AT ABOUT THE SAME TIME, ENTIRE AREA WAS REGIONALLY THERMAL METAMORPHOSED. THIS IRON RIVER - CRYSTAL FALLS AREA IS IN THE CHLORITE METAMORPHIC ZONE. |
| Deposit | THICKNESS IS OF RIVERTON IRON FORMATION. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1972 | Cannon, Suzanne S. | U.S. Geological Survey | |
| Updater | 01-MAR-1997 | Sutphin, D.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.