| Deposit ID | 10079969 |
|---|---|
| MRDS ID | W030838 |
| Record type | Site |
| Current site name | Folly Mine |
| Alternate or previous names | Folley Mine, Buffalo Ridge Prospects, Piedmont Copper Mines |
| Geographic coordinates: | -78.96835, 37.56145 (WGS84) |
|---|---|
| Elevation | 195 |
| Relative position | 6.9 KM (4.3 MI) SOUTH OF NEW GLASGOW. |
Political divisions (FIPS codes)
Amherst(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Buffalo Ridge(quadrangle 1:24,000 scale)
Dillwyn(quadrangle 1:100,000 scale)
Roanoke(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Middle James-Buffalo(hydrologic unit)
James(hydrologic accounting unit)
Lower Chesapeake(hydrologic subregion)
Mid Atlantic(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Virginia | Amherst |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Materials | Type of material |
|---|---|
| Bornite | Ore |
| Chalcocite | Ore |
| Chalcopyrite | Ore |
| Chrysocolla | Ore |
| Covellite | Ore |
| Malachite | Ore |
| Actinolite | Gangue |
| Chalcedony | Gangue |
| Chlorite | Gangue |
| Olivine | Gangue |
| Pyroxene | Gangue |
| Quartz | Gangue |
| Talc | Gangue |
| Tremolite | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite | ||||||
| Rock unit name | Metaperidotite Dike | ||||||
| Rock description | Metaperidotite Dike | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Ultramafic Intrusive Rock > Peridotite |
| Rock unit name | Metaperidotite Dike;Lynchburg Formation |
| Rock description | Metaperidotite Dike;Lynchburg Formation |
| (1) | -78.96835, 37.56145 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Blue Ridge Anticlinorium, Espenshade (1954) Mapped A Major Reverse Fault To The East Between Lynchburg And Candler Formations. |
| Type of structure | Local |
| Structure description | High Angle Faulting (?) |
| General form | LENS/STRINGERS, IRREGULAR |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1775 |
| Year of first production | 1775 |
| District name | James River-Roanoke River Manganese District/Glades Area |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Buffalo Ridge Development Co. |
| Type | Owner |
|---|---|
| Owner | H. E. Graves/A. W. Mosby |
| Type of workings | Underground |
|---|---|
| Overall depth | 91M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W030838 |
ESPENSHADE, G.H., 1954, GEOLOGY AND MINERAL DEPOSITS OF THE JAMES RIVER-ROANOKE RIVER MANGANESE DISTRICT, VIRGINIA: U.S. GEOLOGICAL SURVEY BULLETIN 1008, 155 P.
FURCRON, A.S., 1935, JAMES RIVER IRON AND MARBLE BELT, VIRGINIA: VIRGINIA GEOLOGICAL SURVEY BULLETIN 39, 121 P.
LUTTRELL, G.W., 1966, BASE-AND PRECIOUS-METAL AND RELATED ORE DEPOSITS OF VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, MINERAL RESOURCES REPORT 7, 167 P.
THE VIRGINIAS, 1880, COPPER: V. 1, NO. 12, P. 193.
1765 DIREXPL COL. CHISWELL: MINED DEPOSITS
1875 DIREXPL THOMAS DUNLAP: MINED DEPOSITS
1925 GEOLMAP VA. GEOL. SURV: AREA MAPPED
1940 GEOLMAP G.H. ESPENSHADE: BULLETIN 1008.
THE VIRGINIAS (1880)
| Subject category | Comment text |
|---|---|
| Deposit | SHEAR ZONE IS ABOUT 30 M WIDE. |
| Deposit | ALTHOUGH ORIGINALLY A SINGLE MINE, LATER WORKINGS INCLUDED ENTIRE MINERALIZED ZONE EXTENDING FROM THE FOLLEY MINE TO THE CHRISTIAN TRACT MINE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-DEC-1979 | Meintzer, Robert E. (Le Van, D.C.) | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.