| Deposit ID | 10106400 |
|---|---|
| MRDS ID | W062225 |
| Record type | Site |
| Current site name | Baltic Mine |
| Geographic coordinates: | -88.63478, 47.06333 (WGS84) |
|---|
Political divisions (FIPS codes)
Houghton(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
South Range(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 | Houghton |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| 54N | 34W | 20, 21 | Michigan |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Copper | Ore |
| Quartz | Gangue |
| Epidote | Gangue |
| Pumpellyite-(Mg) | 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 | Baltic Amygdaloid Lode | ||||
| Rock description | Baltic Amygdaloid Lode | ||||
| |||||
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | |||||
| Rock unit name | Portage Lake Volcanics | ||||
| Rock description | Portage Lake Volcanics | ||||
| |||||
| (1) | -88.63478, 47.06333 |
|---|
| General form | TABULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | Yes |
| Year of first production | 1898 |
| Year of last production | 1968 |
| Production years | 1898 THROUGH 1925, BUT NOT LATER THAN 1968. |
| District name | Keweenaw Copper |
|---|
| Type | Owner |
|---|---|
| Owner | Copper Range Co. |
| Year | 1916 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1898-1916 | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
| Year | 1925 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1917-1925 | ||||||||||||||
| 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., AND WRIGHT, J.C., 1956, GEOLOGIC MAP OF THE SOUTH RANGE QUADRANGLE, MICHIGAN: USGS MAP MF-48, SCALE 1:24000
BUTLER AND BURBANK, 1929, P. 70.
| Subject category | Comment text |
|---|---|
| Deposit | THE BALTIC AMYGDALOID IS 150-200 FEET THICK IN THE VICINITY OF THE BALTIC, TRIMOUNTAIN, AND CHAMPION MINES BUT THINS CONSIDERABLY TO NORTH AND SOUTH. CORRELATIONS ARE DIFFICULT AWAY FROM MAIN MINE AREAS. HORIZON HAS BEEN SEEN AT GLOBE PROSPECT. |
| 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.