| Deposit ID | 10080134 |
|---|---|
| MRDS ID | W031220 |
| Record type | Site |
| Current site name | Stony Point Mine |
| Geographic coordinates: | -78.34416, 38.11894 (WGS84) |
|---|---|
| Elevation | 152 |
| Relative position | ABOUT 2.4 KM (1.5 MI) ENE OF STONY POINT. |
Political divisions (FIPS codes)
Albemarle(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Keswick(quadrangle 1:24,000 scale)
Charlottesville(quadrangle 1:100,000 scale)
Charlottesville(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Rivanna(hydrologic unit)
James(hydrologic accounting unit)
Lower Chesapeake(hydrologic subregion)
Mid Atlantic(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Virginia | Albemarle |
| Commodity | Importance |
|---|---|
| Iron | Primary |
| Copper | Secondary |
| Sulfur-Pyrite | Tertiary |
| Gold | Tertiary |
| Silver | Tertiary |
| Materials | Type of material |
|---|---|
| Malachite | Ore |
| Pyrite | Ore |
| Hematite | Gangue |
| Quartz | Gangue |
| Sericite | Gangue |
| Siderite | Gangue |
| Result | SAMPLES OF CHALCOPYRITE WERE ASSAYED WITH REPORTED YIELDS OF $5.00 PER TON IN GOLD AND 15 PERCENT IN COPPER. SAMPLE OF ORE FROM MINE WAS ASSAYED BY NORTHEAST GEOCHEMICAL AND ASSAY CO., YARMOUTH, ME IN AUGUST, 1986. ASSAY INDICATED <0.0005 OZ. AU/TON AND <0.1 OZ. AG/TON. |
|---|
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Metamorphic Rock > Schist | ||||
| Rock unit name | Swift Run Formation | ||||
| Rock description | Swift Run Formation | ||||
| |||||
| (1) | -78.34416, 38.11894 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Blue Ridge Anticlinorium |
| Type of structure | Local |
| Structure description | A Fault Trending Nw-Se Lies About 152 M 1500 Ft) Ne Of The Mine |
| Strike | N 35 DEG E |
|---|---|
| Dip | 55 DEG S |
| Width | 2M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1878 |
| Discoverer | Major Mason |
| Year of first production | 1885 |
| Year of last production | 1990 |
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | Major Mason |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 40M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W031220 |
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.
NELSON, W.A., 1962, GEOLOGY AND MINERAL RESOURCES OF ALBEMARLE COUNTY: VIRGINIA DIVISION OF MINERAL RESOURCES BULLETIN 77, 92 P.
WATSON, T.L., 1907, MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VA., J.P. BELL CO., 618 P.
WEED, W.H., 1911, COPPER DEPOSITS OF THE APPALACHIAN STATES: U.S. GEOLOGICAL SURVEY, BULLETIN 455, 166 P.
TAZELAAR, J.F., 1958, A GEOLOGICAL AND GEOPHYSICAL SURVEY OF STONY POINT, VIRGINIA, IRON-COPPER DEPOSIT: UNPUBLISHED M.A. THESIS, UNIVERSITY OF VIRGINIA.
1885 DIREXPL MAJOR MASON: WORKED THE GOSSAN UNTIL 1890, SHIPPED 2500 CARLOADS OF ORE, BUT STOPPED WORKINGS DUE TO HIGH SILICA, AND INCREASING CHALCOPYRITE CONTENT MADE THE ORE UNSUITABLE FOR SMELTING (WEED, 1911)
WEED (1911)
| Subject category | Comment text |
|---|---|
| Deposit | GOSSAN RESULTED FROM ALTERATION OF CHALCOPYRITE VEIN. GOSSAN OUTCROP WAS TRACED ALONG THE SURFACE FOR 1.2 KM (0.75 MI). |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-SEP-1979 | Beaulieu, Harvey R. (Le Van, D. C.) | U.S. Geological Survey | |
| Updater | 01-DEC-1987 | Sweet, Palmer C. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.