| Deposit ID | 10101913 |
|---|---|
| MRDS ID | D011945 |
| Record type | Site |
| Current site name | Michigan-Utah Mine |
| Alternate or previous names | Grizzly Tunnel, Cleave Tunnel, Topeka Tunnel, City Rocks Tunnel, Butte Mine, Black Bess Mine, Solitude Tunnel, Utah Mines Coalition, Lavina, Darlington, Regulator, Continental-Alta. |
| Geographic coordinates: | -111.61772, 40.59577 (WGS84) |
|---|---|
| Elevation | 2877 |
| Relative position | 6010 FT N71 DEGREES W OF MT. MILLICENT |
Political divisions (FIPS codes)
Salt Lake(county)
Utah(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Brighton(quadrangle 1:24,000 scale)
Salt Lake City(quadrangle 1:100,000 scale)
Salt Lake City(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Jordan(hydrologic unit)
Jordan(hydrologic accounting unit)
Great Salt Lake(hydrologic subregion)
Great Basin(hydrologic region)
Federal lands
Uinta-Wasatch-Cache National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Utah | Salt Lake |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Salt Lake | 002S | 003E | 33 | NE OF SE OF SW | Utah |
| Commodity | Importance |
|---|---|
| Silver | Primary |
| Lead | Primary |
| Copper | Secondary |
| Gold | Secondary |
| Manganese Critical | Secondary |
| Zinc Critical | Tertiary |
| Molybdenum | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Malachite | Ore |
| Smithsonite | Ore |
| Sphalerite | Ore |
| Wad | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Result | ORE FROM ALL MINING DONE BETWEEN 1901 AND 1919 AVERAGED 52 CENTS/TON AU, 16.5 OZ/TON AG, 9.12% PB, AND 1.2% CU |
|---|
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||
| Rock unit name | Alta Stock;Grizzly Dike-Alaskite | ||
| Rock description | Alta Stock;Grizzly Dike-Alaskite | ||
| |||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Maxfield Limestone;Fitchville Formation |
| Rock description | Maxfield Limestone;Fitchville Formation |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Dolomite |
| (1) | -111.61772, 40.59577 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Sevier Overthrust Belt, Cordilleran Hinge Line, Uinta-Cottonwood Arch |
| Type of structure | Local |
| Structure description | Grizzly Overthrust Zone, Northeast Striking Fissures |
| General form | TABULAR |
|---|---|
| Strike | N60E |
| Dip | 80N |
| Depth to top | 0M |
| Depth to bottom | 365.76M |
| General form | TABULAR |
|---|---|
| Dip | 80N |
| General form | TABULAR |
|---|---|
| Dip | 80N |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Medium |
| Significant | No |
| Discovery year | 1869 |
| Year of first production | 1870 |
| Year of last production | 1928 |
| District name | Little Cottonwood District |
|---|
| Ownership category | Private |
|---|
| Year | 1919 | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Period | 1901-1919 | ||||||||||||||||||||||||||||
| Material | ORE | ||||||||||||||||||||||||||||
| Accuracy | Estimate | ||||||||||||||||||||||||||||
| Description | Cp_Grade: ^52 Cents/Ton Au, 16 Oz/Ton Ag, 9.12% Pb, 1.2% Cu | ||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||
| Type of workings | Underground |
|---|---|
| Length | 19812M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011945 |
BUTLER, B.S., LOUGHLIN, G.F., HEIKES, V.C., AND OTHERS, 1920, THE ORE DEPOSITS OF UTAH: U.S. GEOLOGICAL SURVEY PROF. PAPER, NO. 111.
BAKER, A.A., CALKINS, F.C., CRITTENDEN, M.D., JR., AND BROMFIELD, C.S., 1966, GEOLOGIC MAP OF THE BRIGHTON QUADRANGLE, UTAH: U.S. GEOLOGICAL SURVEY GEOL. QUAD. MAP GQ-534
JAMES, L.P., 1979, GEOLOGY, ORE DEPOSITS, AND HISTORY OF THE BIG COTTONWOOD MINING DISTRICT, SALT LAKE COUNTY, UTAH: U.G.M.S. BULL. NO. 114
CALKINS AND BUTLER, 1943
| Subject category | Comment text |
|---|---|
| Deposit | MOST PRODUCTION CAME FROM FISSURE DEPOSITS AND ASSOCIATED REPLACEMENT PODS. REPLACEMENTS FORMED AT INTERSECTIONS BETWEEN FAVORABLE LIMESTONE BEDS AND FISSURES. NUMEROUS FISSURES WERE MINED BUT MOST OF THE PRODUCTION CAME FROM THE CITY ROCKS AND GRIZZLY-LAVINIA FISSURE SYSTEMS. MINOR PRODUCTION CAME FROM CONTACT MAGNETITE-RICH, COPPER-BEARING REPLACEMENT BODIES NEAR DIKES. MOST FISSURES STRIKE N60E AND DIP STEEPLY TO THE NORTH. SOME REVERSAL OF DIPS SEEN ACROSS THE GRIZZLY THRUST FAULT. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1984 | Shubat, Michael A. | Utah Geological and Mineral Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.