1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Grand Junction and Hartford Group

Past Producer in Custer county in South Dakota, United States with commodities Gold, Silver
Map
XML
JSON
KML
B
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10010771
MRDS ID D004738
Record type Site
Current site name Grand Junction and Hartford Group

Geographic coordinates

Geographic coordinates: -103.67279, 43.84857 (WGS84)
Elevation 1853
Relative position 1.75 MI NORTHWEST OF BERNE, SOUTH DAKOTA

Site location context

Political divisions (FIPS codes)

Custer(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Berne(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)

Geographic areas

Country State County
United States South Dakota Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
Black Hills 002S 004E 29 South Dakota

Comments on the location information

  • W 1/2, CENTRAL

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Silver Ore
Galena Gangue
Pyrrhotite Gangue
Quartz Gangue
Sphalerite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Schist
    Rock description Schist
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -103.67279, 43.84857
ListMap

Economic information

Ore body information

  • General form IRREGULAR
    Strike N5W
    Dip STEEPLY WEST
    Thickness 4.57M

Controls for ore emplacement

  • Quartz Dike

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Unorganized District

Land status

Ownership category National Forest
Area name Black Hills National Forest

Ownership information

  • Type Owner
    Owner C. C. Crary

Production statistics

  • Year 1880
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 4.9g

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 39.62M
    Overall length 60.96M
    Overall width 22.86M

Comments on the workings information

  • 70 FEET DEEP; SEVERAL SMALLER CUTS, TWO ADITS & A SHAFT

Comments on development

  • 2 UNPATENTED 10 ACRE CLAIMS ; ECON.COM: 40-STAMP MILL

Reference information

Bibliographic references

  • Deposit

    U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707

  • Deposit

    ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18

  • Production

    U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707

General comments

Subject category Comment text
Deposit ORE OCCURS IN BRECCIATED ZONE ALONG THE HANGING WALL SIDE OF A LARGE IRREGULAR QUARTZ DIKE TRACED AS A CONSPICUOUS OUTCROP FOR 2 MILES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1980 Barari, Rachel A. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site