| Deposit ID | 10080385 |
|---|---|
| MRDS ID | W031512 |
| Record type | Site |
| Current site name | South Lake Mine |
| Alternate or previous names | Lake Mine, Aztec Mine |
| Geographic coordinates: | -89.05368, 46.77556 (WGS84) |
|---|---|
| Relative position | GREENLAND TOWNSHIP |
Political divisions (FIPS codes)
Ontonagon(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Greenland(quadrangle 1:24,000 scale)
Ontonagon(quadrangle 1:100,000 scale)
Iron River(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 | Ontonagon |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Michigan | 051N | 037W | 31 | NW | Michigan |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Copper | Ore |
| Quartz | Gangue |
| Calcite | Gangue |
| Epidote | Gangue |
| Pumpellyite-(Mg) | Gangue |
| Chlorite | Gangue |
| Feldspar | 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 | Portage Lake Volcanics | ||||
| Rock description | Portage Lake Volcanics | ||||
| |||||
| (1) | -89.05368, 46.77556 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Syncline |
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Large |
| Significant | Yes |
| Discoverer | Aboriginal Indians |
| District name | Keweenaw Copper |
|---|
| Ownership category | State Forest |
|---|
| Year | 1918 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1852-1918 | ||||||||||||||
| Accuracy | Accurate | ||||||||||||||
| |||||||||||||||
COPPER RANGE CO., UNPUBLISHCOPPER RANGE CO., UNPUBLISHED, 1968, BEDROCK GEOLOGY MAP OF THE GREENLAND (SE 1/4) QUADRANGLE, ONTONAGON COUNTY, MICHIGAN. GEOLOGY MAPPED AND COMPILED BY COPPER RANGE EXPLORATION CO., INC., AND BY H. HUBBARD (U.S.G.S.)
BUTLER, B.S., AND BURBANK, W.S., 1929, THE COPPER DEPOSITS OF MICHIGAN: U.S. GEOLOGICAL SURVEY PROF. PAPER 144, 238P.
WILBAND, J.T., 1978 THE COPPER RESOURCES OF NORTHERN MICHIGAN; PREPARED FOR THE U.S. BUREAU OF MINES, CONTRACT NO. J0366067, 66P.
JOHNSON, A.M., AND GROTH, E.H.,, 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, P. 112-113, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.
BUTLER AND BURBANK (1929)
| Subject category | Comment text |
|---|---|
| Deposit | FIRST KNOWN AS THE AZTEC MINING CO., WHICH BEGAN PRODUCTION IN 1852. REORGANIZED IN 1863. THE MINE WAS BOUGHT IN 1871 BY P.T. ROGERS, THEN SOLD TO A DR. HUSSEY IN 1880 AND A NEW COMPANY WAS ORGANIZED. WORK WAS DISCONTINUED IN 1882. THE SOUTH LAKE MINING CO. WAS ORGANIZED IN 1909, AND PRODUCTION WAS FROM 1915-1918. 1915-1918. 686.375 LBS. OF CU CONC. FROM AZTEC (1852-1882) AND 1,042,211 LBS CU CONC. AT 14.98 LBS CU/TON FROM SOUTH LAKE (1915-1918). |
| Deposit | LODE 15-20 FEET WIDE; |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-OCT-1980 | Yeager, Keith (Cannon, W.) | Michigan Geological Survey Division | |
| Updater | 01-MAR-1997 | Sutphin, D.M. | U.S. Geological Survey | |
| Editor | 01-MAY-1997 | Mason Jr., G.T. | U.S. Geological Survey | |
| Updater | 08-AUG-2001 | Anderson, Arlene (M. Gere) | Michigan Department of Natural Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.