| Deposit ID | 10106134 |
|---|---|
| MRDS ID | W029533 |
| Record type | Site |
| Current site name | New Grindstone Mine |
| Geographic coordinates: | -77.7772, 38.19783 (WGS84) |
|---|---|
| Elevation | 120 |
| Relative position | 1.3 KM (0.8 MI) NE OF PORTERS. |
Political divisions (FIPS codes)
Spotsylvania(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Belmont(quadrangle 1:24,000 scale)
Fredericksburg(quadrangle 1:100,000 scale)
Washington(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Mattaponi(hydrologic unit)
Lower Chesapeake(hydrologic accounting unit)
Lower Chesapeake(hydrologic subregion)
Mid Atlantic(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | Virginia | Spotsylvania |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Tertiary |
| Zinc Critical | Tertiary |
| Lead | Tertiary |
| Sulfur-Pyrite | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Limonite | Gangue |
| Magnetite | Gangue |
| Quartz | Gangue |
| Model code | 273 |
|---|---|
| USGS model code | 36a |
| Deposit model name | Low-sulfide Au-quartz vein |
| Mark3 model number | 27 |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase | ||||||||
| Rock unit name | Diabase Dike | ||||||||
| Rock description | Diabase Dike | ||||||||
| |||||||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist |
| Rock unit name | Chopawamsic Formation |
| Rock description | Chopawamsic Formation |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Gneiss |
| (1) | -77.7772, 38.19783 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Columbia Syncline |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1910 |
| Year of first production | 1910 |
| District name | Gold-Pyrite Belt |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | New Jersey Zinc Co. |
| Type | Owner |
|---|---|
| Owner | Chesapeake Corp. Of Va. |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W029533 |
SWEET, P.C., 1980, GOLD IN VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, PUBLICATION 19, IN PRESS.
MCCASKEY, H.D., 1911, GOLD, SILVER, COPPER, LEAD, AND ZINC IN THE EASTERN STATES IN 1910 (MINE PRODUCTION), IN MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1910, PT. 1, METALS: U.S. GEOLOGICAL SURVEY, P. 675-691.
MCCASKEY, H.D., 1912, GOLD, SILVER, COPPER, LEAD, AND ZINC IN THE EASTERN STATES IN 1911 (MINE PRODUCTION), IN MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1911, PT. 1, METALS: U.S. GEOLOGICAL SURVEY, P. 873-888.
1910 DIREXPL PROBABLE FIRST ATTEMPT AT DEVELOPMENT
1955 OTHER NEW JERSEY ZINC CO: LEASED PROPERTY
1974 RECON VA. DIV. MIN. RES.: INSPECTED SITE.
| Subject category | Comment text |
|---|---|
| Deposit | THOUGH TWO SEPARATE WORKINGS, THE LITERATURE DOES NOT DISTINGUISH WELL BETWEEN THE NEW GRINDSTONE AND GRINDSTONE MINES. THE NEW GRINDSTONE IS PROBABLY THE MINE TO WHICH REFERRED BY MCCASKEY (1911, 1912) AND IS THE LATER DEVELOPED MINE. ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUL-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.