| Deposit ID | 10055496 |
|---|---|
| MRDS ID | SD02053 |
| Record type | Site |
| Current site name | Isadorah Mine |
| Alternate or previous names | Billie Mine, Golden Reward Group, Rock Bluff Claim |
| Geographic coordinates: | -103.80169, 44.32385 (WGS84) |
|---|---|
| Elevation | 1756 |
| Relative position | 3 MI. SOUTHWEST OF LEAD, SOUTH DAKOTA |
Political divisions (FIPS codes)
Lawrence(county)
South Dakota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Lead(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 | 004N | 003E | 07 | South Dakota |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Primary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Silver | Ore |
| Host or associated | Associated | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock | ||||||||
| Rock unit name | Sill Like Porphyry Intrusion | ||||||||
| Rock description | Sill Like Porphyry Intrusion | ||||||||
| |||||||||
| (1) | -103.80169, 44.32385 |
|---|
| Development status | Past Producer |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1899 |
| District name | Ruby Basin District |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | SD02053 |
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688
| Subject category | Comment text |
|---|---|
| Deposit | ORE LOCATED ON TOP OF PORPHYRY INTRUSION AT THE WEST END AND BELOW THE INTRUSION ON THE EAST END. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-MAY-1979 | Barari, Rachel A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.