| Deposit ID | 10082614 |
|---|---|
| MRDS ID | W060051 |
| Record type | Site |
| Current site name | Central Mine |
| Alternate or previous names | Central Fissure |
| Geographic coordinates: | -88.20004, 47.4 (WGS84) |
|---|---|
| Relative position | HOUGHTON TOWNSHIP |
Political divisions (FIPS codes)
Keweenaw(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Eagle Harbor(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 | 058N | 031W | 23 | SE OF SE | Michigan |
| SW OF SE | Michigan | ||||
| NW OF SE | Michigan | ||||
| NE OF SE | Michigan |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Copper | Ore |
| 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 | Portage Lake Volcanics | ||||
| Rock description | Portage Lake Volcanics | ||||
| |||||
| (1) | -88.20004, 47.4 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Fissure crossing Greenstone flow - mines on south side of Greenstone flow |
| Operation type | Surface |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1854 |
| Year of last production | 1898 |
| District name | Keweenaw Copper |
|---|
| Type | Owner |
|---|---|
| Owner | Central Mining Co. |
| Type | Operator |
|---|---|
| Owner | Calumet & Hecla Co. |
| Year | 1898 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1855-1898 | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: USGS PROF. PAPER NO. 144, 238 PP.
CORNWALL, H.R, AND WRIGHT, J.C., 1954, BEDROCK GEOLOGY OF THE EAGLE HARBOR QUADRANGLE, MICHIGAN: USGS MAP GQ-36, SCALE 1:24000
JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTJOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, KEWEENAW COUNTY, SITE ID 420015, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
BUTLER AND BURBANK, 1929
| Subject category | Comment text |
|---|---|
| Deposit | OPEN 1854, FIRST MINE TO PAY ALL EXPENSES IN ITS FIRST YEAR, THEN PAID DIVIDENDS FOR 40 YEARS. |
| Deposit | FISSURE VEIN WAS RICHEST AT 100 FATHOMS (600' DEPTH) |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUL-1995 | Nicholson, Suzanne | 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 | |
| Editor | 30-JUL-2002 | Anderson, Arlene (M. Gere) | Michigan Department of Natural Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.