| Deposit ID | 10082872 |
|---|---|
| MRDS ID | W062236 |
| Record type | Site |
| Current site name | Mohawk Mine |
| Geographic coordinates: | -88.35866, 47.305 (WGS84) |
|---|
Political divisions (FIPS codes)
Keweenaw(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Mohawk(quadrangle 1:24,000 scale)
Hancock(quadrangle 1:100,000 scale)
Hancock C(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Keweenaw Peninsula(hydrologic unit)
Southcentral Lake Superior(hydrologic accounting unit)
Southern Lake Superior(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Keweenaw |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Michigan | 057N | 032W | 33 | Michigan |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Copper | Ore |
| Feldspar | Gangue |
| Epidote | Gangue |
| Quartz | Gangue |
| Calcite | Gangue |
| Model code | 96 |
|---|---|
| USGS model code | Unassigned |
| Deposit model name | Native Cu |
| Mark3 model number | 99 |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt | ||||
| Rock unit name | Kearsarge Amygdaloid | ||||
| Rock description | Kearsarge Amygdaloid | ||||
| |||||
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | |||||
| Rock unit name | Portage Lake Volcanics | ||||
| Rock description | Portage Lake Volcanics | ||||
| |||||
| (1) | -88.35866, 47.305 |
|---|
| General form | TABULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Year of first production | 1900 |
| Year of last production | 1931 |
| Production years | 1900-1901 PRODUCED MOHAWKITE; 1902-1925 AND LATER PRODUCED COPPER. |
| District name | Keweenaw Copper |
|---|
| Type | Owner |
|---|---|
| Owner | Fulton Mining Co. |
| First year | 1898 |
| Type | Owner |
|---|---|
| Owner | Mohawk Mining Co. (organized in Nov 1898, took over part of the lands of Fulton Mining Co.) |
| First year | 1898 |
| Year | 1901 |
|---|---|
| Period | 1900-1901 |
| Material | ore mohawkite |
| Ore mined | 104.7mt |
| Accuracy | Accurate |
| Year | 1925 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1902-1925 | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF PAPER NO. 144, 238 PP.
WHITE, W.S., CORNWALL, H.R., AND SWANSON, R.W., 1953, BEDROCK GEOLOGY OF THE AHMEEK QUADRANGLE; USGS MAP GQ-27, SCALE 1:24000
DAVIDSON, E.S, ESPENSHADE, G.H., WHITE, W.S., AND WRIGHT, J.C., 1955, BEDROCK GEOLOGY OF THE MOHAWK QUADRANGLE, MICHIGAN: USGS MAP GQ-54, SCALE 1:24000.
BUTLER, B.S., AND BURBANK, W.S., 1929, P. 90.
| Subject category | Comment text |
|---|---|
| Deposit | SEVERAL ARSENIDE FISSURES HAVE BEEN PROSPECTED IN THE NORTH END OF THE MOHAWK MINE. THE MAIN MINERALIZED AREA IS AT THE CROSSING OF THE KEARSARGE LODE AND EXTENDS FOR A SHORT DISTANCE INTO THE HANGING WALL OF THE KEARSARGE. A FISSURE OPENED SOUTH OF N0. 6 MOHAWK SHAFT CONTAINED SOME COPPER NEAR THE INTERSECTION WITH THE LODE. THE LODE IS ALSO REPORTED AS RICH NEAR THE FISSURE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAR-1996 | Sutphin, D.M. (Cannon, W.F.) | 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.