| Deposit ID | 10080706 |
|---|---|
| MRDS ID | W032049 |
| Record type | Site |
| Current site name | Philadelphia Mine |
| Geographic coordinates: | -78.385, 38.91615 (WGS84) |
|---|---|
| Elevation | 418 |
| Relative position | 5.9 KM (3.7 MI) SOUTHEAST OF TOMS BROOK. |
Political divisions (FIPS codes)
Shenandoah(county)
Virginia(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Toms Brook(quadrangle 1:24,000 scale)
Front Royal(quadrangle 1:100,000 scale)
Charlottesville(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
North Fork Shenandoah(hydrologic unit)
Potomac(hydrologic accounting unit)
Potomac(hydrologic subregion)
Mid Atlantic(hydrologic region)
Federal lands
George Washington National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
George Washington and Jefferson National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | Virginia | Shenandoah |
| Commodity | Importance |
|---|---|
| Manganese Critical | Primary |
| Materials | Type of material |
|---|---|
| Pyrolusite | Ore |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Sandstone | ||||
| Rock unit name | Ridgeley Sandstone | ||||
| Rock description | Ridgeley Sandstone | ||||
| |||||
| (1) | Marcellus Shale and Needmore Formation |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Ne-Sw Trend, Massanutten Synclinorium |
| Type of structure | Local |
| Structure description | Syncline |
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1925 |
| Year of first production | 1925 |
| Year of last production | 1928 |
| District name | Little Fort Valley Area |
|---|
| Ownership category | National Forest |
|---|
| Type | Owner |
|---|---|
| Owner | George Washington National Forest |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 12M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W032049 |
STOSE, G.W., AND MISER, H.D., 1922, MANGANESE DEPOSITS OF WESTERN VIRGINIA: VA. GEOLOGICAL SURVEY BULL. 23, 206 P.
RADER, E.K., AND BIGGS, T.H., 1976, GEOLOGY OF THE STRASBURG AND TOMS BROOKS QUADRANGLES, VIRGINIA: VA. DIV. MIN. RES., REPT. OF INVESTIGATIONS 45, 104 P.
HARDER, E.C., 1910, MANGANESE DEPOSITS OF THE UNITED STATES: USGS BULL. 427, P 68.
MORRILL, P., 1972, VIRGINIA MINES AND MINERALS: ROCKS AND MINERALS MAGAZINE, VOL. 47, NO. 7-8, P. 438-441.
HARDER, 1910
| Subject category | Comment text |
|---|---|
| Deposit | DEPOSIT IS IN THE SAME ORE ZONE AND SAME SYNCLINE AS THE POWELLS FORT MINE. SOFT, BLUE PYROLUSITE OCCURS IN POCKETS AND THE ORE CRUMBLES TO POWDER ON TOUCHING, MAKING MINING DIFFICULT. |
| Deposit | Discovery Year: EARLY 1900'S (?) |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JUN-1982 | Trimble, David C. (Sweet, Palmer C.) | Virginia Division of Mineral Resources |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.