| Deposit ID | 10067635 |
|---|---|
| MRDS ID | W000430 |
| Record type | Site |
| Current site name | United States Mine |
| Alternate or previous names | Welford Mine |
| Geographic coordinates: | -77.62109, 38.35698 (WGS84) |
|---|---|
| Elevation | 87 |
| Relative position | 6.2 KM (3.9 MI) NORTH OF FREDERICKSBURG-SPOTSYLVANIA NATIONAL MILITARY PARK. |
Political divisions (FIPS codes)
Spotsylvania(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Salem Church(quadrangle 1:24,000 scale)
Fredericksburg(quadrangle 1:100,000 scale)
Washington(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Rappahannock(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 |
| Zinc Critical | Tertiary |
| Lead | Tertiary |
| Copper | Tertiary |
| Tungsten Critical | Tertiary |
| Vanadium Critical | Tertiary |
| Sulfur-Pyrite | Tertiary |
| Materials | Type of material |
|---|---|
| Chalcopyrite | Ore |
| Galena | Ore |
| Gold | Ore |
| Marcasite | Ore |
| Pyrite | Ore |
| Sphalerite | Ore |
| Vanadinite | Ore |
| Wulfenite | Ore |
| Ankerite | Gangue |
| Chlorite | Gangue |
| Quartz | Gangue |
| Sericite | Gangue |
| Result | ASSAY OF ORE CRUSHED WAS 1 TOZ PER TON. |
|---|
| 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 | ||||||||
| Rock unit name | Fredricksburg Complex | ||||||||
| Rock description | Fredricksburg Complex | ||||||||
| |||||||||
| Host or associated | Associated |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Mafic Intrusive Rock > Diorite |
| Rock unit name | Fredricksburg Complex |
| Rock description | Fredricksburg Complex |
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist > Amphibole Schist |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite |
| (1) | -77.62109, 38.35698 |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Columbia Syncline ; Reg.Trends: Northeast-Southwest. |
| General form | LENSES AND STRINGERS |
|---|---|
| Strike | N 30-40 DEG. E |
| Dip | 75 DEG. E |
| Thickness | 0.61M |
| Depth to top | 0M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1835 |
| Year of first production | 1835 |
| District name | Gold-Pyrite Belt |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | North American Mining Co, Inc. |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 38M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W000430 |
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.
MAURY, M F, 1837, NOTICE OF THE GOLD VEINS OF THE UNITED STATES' MINE, NEAR FREDERICKSBURG, VA: AMERICAN JOURNAL OF SCIENCE, V 32, NO 1, P 325-330
PARDEE, J T AND PARK, C F, JR, 1948, GOLD DEPOSITS OF THE SOUTHERN PIEDMONT: U S GEOLOGICAL SURVEY PROFESSIONAL PAPER 213, 156 P
SWEET, P C, 1980, GOLD IN VIRGINIA: VIRGINIA DIVISION OF MINERAL RESOURCES, PUBLICATION 19, 77 P
CREDNER, H., 1868, REPORT OF EXPLORATIONS ON THE GOLD FIELDS OF VIRGINIA AND NORTH CAROLINA: AMER. JOUR? MNG., VOL. VI, P. 393.
LONSDALE, J.T., 1927, GEOLOGY OF THE GOLD-PYRITE BELT OF THE NORTHEASTERN PIEDMONT, VIRGINIA: VGS BULL 30, 110 P.
PARK, C.F., JR., 1936, PRELIMINARY REPORT ON GOLD DEPOSITS OF THE VIRGINIA PIEDMONT: VGS BULL 44, 42 P.
WATSON, T.L., 1907, GOLD AND SILVER, IN MINERAL RESOURCES OF VIRGINIA: LYNCHBURG, VIRGINIA, J.P. BELL CO., P. 549-567.
SILLIMAN, B., 1837, REMARKS ON THE GOLD MINES AND ON PARTS OF THE GOLD REGION OF VIRGINIA: AMER. JOUR. SCI. AND ARTS, VOL. 32, P. 98-130.
1835 DIREXPL US MINING CO: CONDUCTED INITIAL DEVELOPMENT AND PRODUCTION.
1865 DIREXPL MILL ERECTED, SHAFT DEEPENED.
1934 DIREXPL NORTH AMERICAN MINING CO: PROSPECTED WORKINGS, NO NEW DEVELOPMENTS.
LUTTRELL REF.
| Subject category | Comment text |
|---|---|
| Deposit | THESE FIGURES REFER TO THE GOLD-BEARING QUARTZ VEINS. ONE VEIN DIPS 45 DEG NW AURIFEROUS QUARTZ HAS A SUGARY TEXTURE . PARDEE AND PARK (1948) HAVE A MORE DETAILED DESCRIPTION OF THE DEPOSIT. |
| Deposit | THIS IS THE OLDEST MINE IN SPOTSYLVANIA CO. IT IS THOUGHT THAT SOME COASTAL PLAIN REMNANTS WERE ENCOUNTERED IN THE SURFACE WORKINGS (WATER- WORN COBBLES). ; INFO.SRC : 1 PUB LIT; 3 FIELD OBSERV |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1972 | Wright, Nancy A. | U.S. Geological Survey | |
| Updater | 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.