| Deposit ID | 10082523 |
|---|---|
| MRDS ID | W055366 |
| Record type | Site |
| Current site name | Stonewall Manganese Mine |
| Geographic coordinates: | -78.97946, 37.44673 (WGS84) |
|---|---|
| Elevation | 236 |
| Relative position | 1/2 MILE N-NW OF JUNCTION OF ROUTES 605 AND 721 |
Political divisions (FIPS codes)
Appomattox(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Stonewall(quadrangle 1:24,000 scale)
Appomattox(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 | Appomattox |
| Commodity | Importance |
|---|---|
| Manganese Critical | Primary |
| Materials | Type of material |
|---|---|
| Psilomelane | Ore |
| Result | MN 42.0%, FE 4.80 |
|---|---|
| Result | SIO2, 7.03 |
| Result | P. 0.16 |
| Result | MOISTURE 4.70 |
| Result | BAO, 8.76, AL2O3, 3.66 |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Quartzite | ||||
| Rock unit name | Mt Athos Member Of Alligator Back Formation Of Lynchburg Group | ||||
| Rock description | Mt Athos Member Of Alligator Back Formation Of Lynchburg Group | ||||
| |||||
| (1) | -78.97946, 37.44673 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | Quartzite Crushed With Tight Folds And Lineations Plunging Steeply To Sw; Drag Folds Plunge Sw |
| General form | LENSE |
|---|---|
| Strike | N 30-40 E |
| Dip | 70 SE |
| Length | 45.72M |
| Width | 1.52M |
| Depth to top | 0M |
| Depth to bottom | 41.15M |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1937 |
| Discoverer | J.M. Mays |
| Year of first production | 1937 |
| Year of last production | 1941 |
| District name | James River-Roanoke River Mn, Fe And Ba District |
|---|
| Ownership category | Private |
|---|
| Type | Operator |
|---|---|
| Owner | C. W. Ryan |
| Type | Owner |
|---|---|
| Owner | Stonewall Mining Co., Lynchburg |
| Type of workings | Unknown |
|---|---|
| Overall depth | 41.15M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W055366 |
ESPENSHADE, G.H., 1954, GEOLOGY AND MINERAL RESOURCES OF THE JAMES RIVER-ROANOKE RIVER MANGANESE DISTRICT, VIRGINIA BULL. 1008, U.S. GEOLOGICAL SURVEY.
CONLEY, J.F., 1985, GEOLOGY OF THE SOUTHWESTERN PIEDMONT, VIRGINIA DIVISION OF MINERAL RESOURCES PUBLICATION 59, 33P. (GENERAL GEOLOGY)
FURCRON, A.S., 1935, JAMES RIVER IRON AND MARBLE BELT, VIRGINIA, VIRGINIA GEOLOGICAL SURVEY BULL 39, 124P. (P.63-64).
| Subject category | Comment text |
|---|---|
| Deposit | HARD MN OXIDE NODULES IN 2 YELLOW CLAY SEAMS; HANGING WALL (SE) IS POROUS. COARSE QUARTZITE, FOOTWALL (NW) IS SILVERY GREEN MICA SCHIST AND SCHISTOSE QUARTZITE THIN STRINGERS VEIN QUARTZ; CLAY IS BANDED WITH MICACEOUS SEAMS PARALLEL TO STEEP SE DIP AND MAY REPRESENT CALCAREOUS LAYERS DECOMPOSED BY GROUND WATER. NON CALCAREOUS ROCKS WERE OBSERVED IN DEPOSIT. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-87 | AS | Virginia Division of Mineral Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.