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

May Group

Producer in Custer county in South Dakota, United States with commodity Gold
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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. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10012468
MRDS ID D008113
Record type Site
Current site name May Group

Geographic coordinates

Geographic coordinates: -103.70029, 43.69802 (WGS84)
Elevation 1707
Location accuracy 500(meters)
Relative position 9 MILES SOUTHWEST OF CUSTER, 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

Fourmile(quadrangle 1:24,000 scale)

Mount Rushmore(quadrangle 1:100,000 scale)

Hot Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Angostura Reservoir(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 004S 003E 15 SE South Dakota

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • REPORTS BEFORE 1900 INDICATE $80 GOLD PANNED FROM SURFACE MATERIAL IN 2 HOURS.

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Hornblendite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -103.70029, 43.69802
ListMap

Economic information

Ore body information

  • General form QUARTZ STRINGER

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1890
Year of last production 1938

Mining district

District name Unorganized District

Land status

Ownership category
Area name Black Hills

Ownership information

  • Type Owner
    Owner Francis Michaud, Monte Heumphreus, Mary And Ford Heumphreus, Of Custer, S.D.; Palmer Hibbard

Workings at the site

  • Type of workings Underground
    Overall depth 3.05M

Comments on the workings information

  • TWO 100 FT SHAFTS, ANOTHER IS 60-70 FT DEEP. A FEW SHORT DRIFTS.

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

General comments

Subject category Comment text
Deposit 7 UNPATENTED CLAIMS TOTALING 130 ACRES. A HORNBLENDE DIORITE DIKE USUALLY IS PRESENT ON ONE OF THE WALLS. THE ORE WAS IN A POCKET. STEEPLY DIPPING.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1981 Barari, Rachel A. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site