| Deposit ID | 10055687 |
|---|---|
| MRDS ID | SD02303 |
| Record type | Site |
| Current site name | Beecher Lode |
| Related records | 10250140 |
| Geographic coordinates: | -103.5775, 43.70274 (WGS84) |
|---|---|
| Elevation | 1670 |
| Relative position | 5 MILES SOUTHEAST OF CUSTER, SOUTH DAKOTA. TAKE THE PRINGLE ROAD SOUTHEAST AND THEN SOUTH FROM CUSTER, AND TURN SOUTHEAST (LEFT) AT THE SCHOOLHOUSE 'Y' ALONG THE TANNER ROAD (TO THE FLYNN CREEK PICNIC GROUNDS). FOLLOW THIS 0.67 MILES TO THE Y WHERE THE ROAD TO THE BEECHER LODE TAKES OFF TO THE RIGHT. THIS IS 0.10 MILES BEYOND THE ROAD Y LEADING TO THE LONG VIEW MINE. |
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 | 004S | 005E | 18 | South Dakota |
| Commodity | Importance |
|---|---|
| Lithium Critical | Primary |
| Beryllium Critical | Primary |
| Mica | Primary |
| Niobium (Columbium) Critical | Secondary |
| Tantalum Critical | Secondary |
| Materials | Type of material |
|---|---|
| Amblygonite | Ore |
| Beryl | Ore |
| Columbite | Ore |
| Mica | Ore |
| Spodumene | Ore |
| Tantalite | Ore |
| Albite | Gangue |
| Apatite | Gangue |
| Cassiterite | Gangue |
| Cleavelandite | Gangue |
| Lepidolite | Gangue |
| Muscovite | Gangue |
| Quartz | Gangue |
| Tourmaline | Gangue |
| Result | 39.1 PERCENT NB205, 36.8 PERCENT TA205 |
|---|
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||||
| Rock unit name | Pegmatite | ||||||
| Rock description | Pegmatite | ||||||
| |||||||
| (1) | Metamorphosed Black Shale |
|---|
| General form | LENS |
|---|---|
| Strike | N |
| Dip | 60 W |
| Thickness | 30.48M |
| Length | 274.32M |
| Width | 24.38M |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| Discovery year | 1900 |
| District name | Custer District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | Black Hills National Forest |
| Type | Operator |
|---|---|
| Owner | Arthur H. Lyndoe |
| Type | Owner |
|---|---|
| Owner | Lithium Corp. Of America |
| Type of workings | Surface/Underground |
|---|---|
| Overall depth | 18.29M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | SD02303 |
U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
FISHER, D. J., 1945, PRELIMINARY REPORT ON THE MINERALOGY OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50.
FISHER, D.J., 1942, PRELIMINARY REPORT ON SOME PEGMATITES OF THE CUSTER DISTRICT, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 44
BIENIEWSKI, C.L., 1964, THE MINERAL INDUSTRY OF SOUTH DAKOTA IN 1962, SOUTH DAKOTA GEOLOGICAL SURVEY MINERALS REPORT 10
| Subject category | Comment text |
|---|---|
| Deposit | GIANT CRYSTALS OF SPODUMENE ARE CONCENTRATED NEAR THE CENTRAL PORTION OF THE PEGMATITE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-1980 | Barari, Rachel A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.