| Deposit ID | 10088540 |
|---|---|
| MRDS ID | K003525 |
| Record type | Site |
| Current site name | Gap Creek Mine |
| Alternate or previous names | Copper Knob Mine |
| Geographic coordinates: | -81.49538, 36.27703 (WGS84) |
|---|---|
| Relative position | BELOW THE HIGHWAY, 0.75 MILE SOUTH BY SOUTHWEST OF HEWED LOG GAP, AND 0.5 MILE NORTHEAST OF JUNCTION OF IDLEWILD ROAD WITH US 221. |
Political divisions (FIPS codes)
Ashe(county)
North Carolina(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Glendale Springs(quadrangle 1:24,000 scale)
Boone(quadrangle 1:100,000 scale)
Winston-Salem(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper New(hydrologic unit)
Kanawha(hydrologic accounting unit)
Kanawha(hydrologic subregion)
Ohio(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | North Carolina | Ashe |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Gold | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcopyrite | Ore |
| Chrysocolla | Ore |
| Gold | Ore |
| Limonite | Ore |
| Malachite | Ore |
| Pyrite | Ore |
| Result | NITZE AND HANNA (1896) GIVE THE FOLLOWING: GOLD, PER TON $8.62 TO $77.51 |
|---|---|
| Result | SILVER, PER TON $2.26 TO $45.68 |
| Result | COPPER RANGED FROM 23.83% TO 37.44%. |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Metamorphic Rock > Gneiss | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Amphibolite |
| Rock unit name | Amphibolite, Garnet Amphibolite, And Hornblende Gneiss Interlayered With Biotite-Muscovite Gneiss And Mica Schist. Associated Lithologies Include More-Widespread Finely Laminated Gneiss Composed Of Fine-Grained, Quartzo-Feldspathic Layers A Few Millimeters Thick, Separated By Thin Micaceous Partings |
| Rock description | Amphibolite, Garnet Amphibolite, And Hornblende Gneiss Interlayered With Biotite-Muscovite Gneiss And Mica Schist. Associated Lithologies Include More-Widespread Finely Laminated Gneiss Composed Of Fine-Grained, Quartzo-Feldspathic Layers A Few Millimete |
| (1) | -81.49538, 36.27703 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Country Rock Trends Northeastward |
| General form | PINCH AND SWELL |
|---|---|
| Strike | N 35 W |
| Dip | 45 N |
| Thickness | 0.91M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discoverer | Copper Knob Mining Company |
| Year of first production | 1857 |
| Year of last production | 1912 |
| Production years | 1880-1885; 1912 |
| Type | Operator |
|---|---|
| Owner | Chauncey And James P. Moore |
| Type | Owner |
|---|---|
| Owner | Virgil Moretz, Lessor; Chauncey And James P. Moore |
| Type of workings | Underground |
|---|---|
| Overall depth | 45.72M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | K003525 |
NITZE, H.B.C., AND HANNA, G.B., 1896, GOLD DEPOSITS OF NORTH CAROLINA: NORTH CAROLINA GEOLOGICAL SURVEY BULL. 3, P. 180-181.
TENNESSEE VALLEY AUTHORITY, (N.D.), GAP CREEK OR COPPER KNOB MINE REPORT: KNOXVILLE, TENNESSEE VALLEY AUTHORITY, MINERAL RESOURCES SECTION, GEOLOGIC BRANCH.
1896 COMPILE NITZE, H.B.C., AND HANNA, G.B., P. 180-181
OPEN-FILE REPORT, MINERAL RESOURCES SECTION, GEOLOGIC BRANCH, TENNESSEE VALLEY AUTHORITY, KNOXVILLE.
| Subject category | Comment text |
|---|---|
| Deposit | RANKIN, ESPENSHADE, AND NEUMAN (1972) CONSIDER THE LOCAL FORMATIONS AS PRECAMBRIAN AND (OR) CAMBRIAN IN AGE, AND YOUNGER THAN THE ASHE FORMATION (OF PRECAMBRIAN AGE). THE HOST ROCK IS EQUIVALENT TO PARTS OF THE ROAN AND CAROLINA GNEISSES OF KEITH (1903). |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1975 | Hale, Robin C. | U.S. Geological Survey | |
| Updater | 01-JUN-1992 | Klein, T.L. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.