| Deposit ID | 10068368 |
|---|---|
| MRDS ID | W001393 |
| Record type | Site |
| Current site name | Tracy Mine |
| Geographic coordinates: | -87.59252, 46.49028 (WGS84) |
|---|---|
| Relative position | SOUTHEAST OF NEGAUNEE. |
Political divisions (FIPS codes)
Marquette(county)
Michigan(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Palmer(quadrangle 1:24,000 scale)
Gwinn(quadrangle 1:100,000 scale)
Marquette(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Dead-Kelsey(hydrologic unit)
Southcentral Lake Superior(hydrologic accounting unit)
Southern Lake Superior(hydrologic subregion)
Great Lakes(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Michigan | Marquette |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Materials | Type of material |
|---|---|
| Hematite | Ore |
| Goethite | Ore |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Chemical Sediment > Iron Formation | ||
| Rock unit name | Negaunee Iron-Formation | ||
| Rock description | Negaunee Iron-Formation | ||
| |||
| (1) | -87.59252, 46.49028 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Marquette syncline; regional trends: E-W. |
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Year of first production | 1870 |
| Year of last production | 1971 |
| Production years | MINE PRODUCTION CEASED IN JAN 1971, SHIPMENTS FROM STOCKPILES CONTINUED TO JUL 1971. |
| District name | Marquette Iron District (Range) |
|---|
| Year | 1971 |
|---|---|
| Period | 1870-1971 |
| Material | ore Fe |
| Ore mined | 9856141mt |
| Accuracy | Accurate |
| Type of workings | Underground |
|---|---|
| Overall depth | 457.2M |
VAN HISE AND BAYLEY, 1897, U. S. G. S. MONOGRAPH 28.
LAKE SUPERIOR IRON ORE ASSOC., 1952, LAKE SUPERIOR IRON ORES.
U.S. BUREAU OF MINES, 1972, MINERALS YEARBOOK 1971: WASHINGTON, D.C., U. S. GOVERNMENT PRINTING OFFICE, V.II.
| Subject category | Comment text |
|---|---|
| Deposit | ARCHEAN ROCKS OVERLAIN BY MARQUETTE RANGE SUPERGROUP ROCKS. ARCHEAN CRYSTALLINE ROCKS BLOCK FAULTED AND DIFFERENTIALLY RAISED LOWERED; FORMING TROUGHS. MIDDLE PRECAMBRIAN "X" (OR MARQUETTE RANGE SUPERGROUP) ROCKS AS SEMI-CONSOLIDATED SEDIMENTS SLUMPED INTO THE TROUGHS. AT ABOUT THE SAME TIME ENTIRE AREA REGIONALLY THERMAL METAMORPHOSED CREATING METAMORPHIC FACIES OR NODES. THE MARQUETTE DISTRICT AFFECTED BY THE REPUBLIC NODE WHICH ZONES FROM CHLORITE TO SILLIMANITE EXCLUSIVE OF KYANITE ONLY. TRACY MINE IS LOCATED IN THE CHLORITE ZONE (JAMES H. L. 1955 P. 1455 - 1488) |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-1972 | Cannon, Suzanne S. | U.S. Geological Survey | |
| Updater | 01-NOV-1995 | Sutphin, D.M. (Cannon, W.F.) | 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.