| Deposit ID | 10104265 |
|---|---|
| MRDS ID | SD02450 |
| Record type | Site |
| Current site name | Beryl Mica Lode |
| Alternate or previous names | Dakota Feldspar Mine |
| Geographic coordinates: | -103.55667, 43.63329 (WGS84) |
|---|---|
| Elevation | 1646 |
| Location accuracy | 500(meters) |
| Relative position | 3 MILES NORTHEAST OF PRINGLE, SOUTH DAKOTA |
Political divisions (FIPS codes)
Custer(county)
South Dakota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Cicero Peak(quadrangle 1:24,000 scale)
Mount Rushmore(quadrangle 1:100,000 scale)
Hot Springs(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Middle Cheyenne-Spring(hydrologic unit)
Cheyenne(hydrologic accounting unit)
Cheyenne(hydrologic subregion)
Missouri(hydrologic region)
Federal lands
Black Hills National Forest(National Forest)
National Forest FS(Type of land area)
FS(Federal land areas administered by FS)
| Country | State | County |
|---|---|---|
| United States | South Dakota | Custer |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Black Hills | 005S | 005E | 08 | NW | South Dakota |
| Commodity | Importance |
|---|---|
| Feldspar | Primary |
| Mica | Secondary |
| Beryllium Critical | Secondary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Mica | Ore |
| Microcline | Ore |
| Quartz | Gangue |
| Tourmaline | Gangue |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Metasedimentary Rock > Quartzite |
| (1) | -103.55667, 43.63329 |
|---|
| General form | LARGE DIKE |
|---|---|
| Thickness | 2.44M |
| Length | 30.48M |
| Width | 15.24M |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Year of first production | 1920 |
| District name | Pringle District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | Black Hills National Forest |
| Type | Owner-Operator |
|---|---|
| Owner | Dakota Feldspar Co. |
| Type of workings | Surface/Underground |
|---|---|
| Length | 60.96M |
| Overall depth | 12.19M |
| Overall width | 5.18M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | SD02450 |
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18
USBM INFO CIRC 7707, P. 186
| Subject category | Comment text |
|---|---|
| Deposit | THESE ARE NORTH WALL ZONE MEASUREMENTS. FELDSPAR IS FROM A 10 FT THICK MASS THAT FORMED THE SOUTH WALL OF THE OLD MICA ZONE. 2 UNPATENTED CLAIMS. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-APR-1981 | Barari, Rachel A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.