| Deposit ID | 10055532 |
|---|---|
| MRDS ID | SD02102 |
| Record type | Site |
| Current site name | Deadbroke Mine |
| Alternate or previous names | Phoenix Group |
| Geographic coordinates: | -103.76836, 44.37774 (WGS84) |
|---|---|
| Elevation | 1524 |
| Relative position | APPROXIMATELY 8 MI SOUTHEAST OF SPEARFISH, SOUTH DAKOTA |
Political divisions (FIPS codes)
Lawrence(county)
South Dakota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Spearfish(quadrangle 1:24,000 scale)
Rapid City(quadrangle 1:100,000 scale)
Rapid City(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Lower Belle Fourche(hydrologic unit)
Belle Fourche(hydrologic accounting unit)
Cheyenne(hydrologic subregion)
Missouri(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | South Dakota | Lawrence |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Black Hills | 005N | 003E | 21 | South Dakota |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Silver | Ore |
| Limonite | Gangue |
| Pyrite | Gangue |
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate | ||||
| Rock unit name | Deadwood Formation-Basal Conglomerate | ||||
| Rock description | Deadwood Formation-Basal Conglomerate | ||||
| |||||
| (1) | -103.76836, 44.37774 |
|---|
| Thickness | 6.71M |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Lead District |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Phoenix Gold Mining Co. |
| Type of workings | Underground |
|---|---|
| Area | 0.21HA |
| Length | 60.35M |
| Overall length | 146.3M |
| Overall width | 15.24M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | SD02102 |
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .
US GEOLOGICAL SURVEY, US BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975 , MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16 .
ALLSMAN, P. T., 1940 , RECONNAISSANCE OF GOLD MINING DISTRICTS IN THE BLACK HILLS, SOUTH DAKOTA, BUREAU OF MINES BULLETIN 427 .
| Subject category | Comment text |
|---|---|
| Deposit | THE CONGLOMERATE IS 2 FT THICK AT THE OUTCROP AND INCREASES TO 22 FT AT THE NORTH END OF THE MINE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-1979 | Barari, Rachel A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.