| Deposit ID | 10014860 |
|---|---|
| MRDS ID | D011921 |
| Record type | Site |
| Current site name | American Tunnel |
| Alternate or previous names | American Mine, Silver King Coalition Mines Company, Silver King Western |
| Geographic coordinates: | -111.57717, 40.62327 (WGS84) |
|---|---|
| Elevation | 2707 |
| Relative position | 2500 FT S80W FROM SCOTT HILL |
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 | 23 | SE OF SW OF SE | Utah |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Silver | Primary |
| Gold | Primary |
| Lead | Secondary |
| Manganese Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Argentite | Ore |
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Malachite | Ore |
| Wad | Ore |
| Calcite | Gangue |
| Quartz | Gangue |
| Result | 16.5% CU 7.5 OZ/TON AG, $4.80/TON AU REPORTED FROM 2 FOOT ZONE. ANOTHER ASSAY COLLECTED FROM MINERALIZATION UNDERGROUND CONTAINED 8.8% CU, 2.5 OZ/TON AG, AND 0.015 OZ/TON AU. |
|---|
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite | ||||||||
| Rock unit name | Diorite Porphyry Dikes | ||||||||
| Rock description | Diorite Porphyry Dikes | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Shale |
| Host or associated | Host |
|---|---|
| Rock type | Sedimentary Rock > Carbonate > Limestone |
| Rock unit name | Park City Formation |
| Rock description | Park City Formation |
| (1) | -111.57717, 40.62327 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Uinta-Cottonwood Arch, Sevier Overthrust Belt, Cordilleran Hingeline |
| Type of structure | Local |
| Structure description | American Zone Of Northeast Striking Fissures, Diorite Dikes, And Mineralization |
| General form | TABULAR, POD |
|---|---|
| Strike | N15E |
| Dip | 73NW |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1875 |
| Year of first production | 1875 |
| Year of last production | 1918 |
| District name | Big Cottonwood District |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Silver King Western Manufacturing Co. |
| Home office | Salt Lake City, UT |
| Type of workings | Underground |
|---|---|
| Length | 304.8M |
| Overall depth | 60.96M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011921 |
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.
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
| Subject category | Comment text |
|---|---|
| Deposit | MINERALIZATION OCCURS AS REPLACEMENT BODIES OF CALCAREOUS BEDS AND ALSO WITHIN NORTHEAST STRIKING FISSURES. MINERALIZATION OF THE REPLACEMENT TYPE RESTRICTED TO TWO LIMESTONE BEDS WITHIN THE PARK CITY FORMATION. MINERALIZATION APPEARS TO BE CLOSELY RELATED TO DIORITE PORPHYRY DIKES. |
| Deposit | Discovery Year: 1870'S |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1984 | Shubat, Michael A. | Utah Geological and Mineral Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.