| Deposit ID | 10055762 |
|---|---|
| MRDS ID | SD02505 |
| Record type | Site |
| Current site name | Custer Mountain Lode |
| Alternate or previous names | Snookum |
| Geographic coordinates: | -103.56584, 43.75524 (WGS84) |
|---|---|
| Relative position | IN HEIDESPRIEM GULCH, 2 MILES SOUTHEAST OF CUSTER, SOUTH DAKOTA |
Political divisions (FIPS codes)
Custer(county)
South Dakota(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Custer(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 | 003S | 005E | 30 | SE | South Dakota |
| Commodity | Importance |
|---|---|
| Feldspar | Primary |
| Mica | Primary |
| Beryllium Critical | Primary |
| Lithium Critical | Primary |
| Tantalum Critical | Tertiary |
| Materials | Type of material |
|---|---|
| Beryl | Ore |
| Feldspar | Ore |
| Lepidolite | Ore |
| Mica | Ore |
| Spodumene | Ore |
| Andalusite | Gangue |
| Apatite | Gangue |
| Cassiterite | Gangue |
| Lazulite | Gangue |
| Lithiophilite | Gangue |
| Pyrite | Gangue |
| Quartz | Gangue |
| Sillimanite | Gangue |
| Tourmaline | Gangue |
| Triphylite | Gangue |
| Uraninite | Gangue |
| Amblygonite | Unknown |
| Host or associated | Associated | ||||
|---|---|---|---|---|---|
| Rock type | Plutonic Rock > Pegmatite | ||||
| |||||
| Host or associated | Host |
|---|---|
| Rock type | Metamorphic Rock > Schist > Mica Schist |
| Host or associated | Host |
|---|---|
| Rock type | Plutonic Rock > Pegmatite |
| (1) | -103.56584, 43.75524 |
|---|
| General form | IRREGULAR |
|---|---|
| Dip | 85 WNW |
| Length | 335.28M |
| Width | 83.82M |
| Development status | Past Producer |
|---|---|
| Commodity type | Both |
| Deposit size | Small |
| Significant | No |
| District name | Custer District |
|---|
| Ownership category | National Forest |
|---|---|
| Area name | Black Hills |
| Type | Owner |
|---|---|
| Owner | George Beach Estate |
| Type of workings | Surface |
|---|---|
| Overall depth | 10.67M |
| Overall length | 38.1M |
| Overall width | 13.72M |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | SD02505 |
USBM INFO CIRC 7707, P. 100
USGS PP 247, P. 97-98
SDGS RI 50, P. 37-56.
| Subject category | Comment text |
|---|---|
| Deposit | A SMALL CUT IN THE FLOOR OF THE OPENCUT DISCLOSES LEPIDOLITE AND SPODUMENE. THIS MAY INDICATE A LEPIDOLITE CORE. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-NOV-1982 | Barari, Rachel A. | U.S. Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.