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

Little Bonanza Mine

Past Producer in Lawrence county in South Dakota, United States with commodities Gold, Silver
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Ownership information
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10055576
MRDS ID SD02163
Record type Site
Current site name Little Bonanza Mine

Geographic coordinates

Geographic coordinates: -103.81225, 44.33135 (WGS84)
Elevation 1804
Relative position 1.5 MILES SOUTHWEST OF LEAD, SOUTH DAKOTA

Site location context

Political divisions (FIPS codes)

Lawrence(county)

South Dakota(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lead(quadrangle 1:24,000 scale)

Rapid City(quadrangle 1:100,000 scale)

Rapid City(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Belle Fourche(hydrologic unit)

Belle Fourche(hydrologic accounting unit)

Cheyenne(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States South Dakota Lawrence

Public Land Survey System information

Meridian Township Range Section Fraction State
Black Hills 004N 003E 06 South Dakota

Comments on the location information

  • SW 1/4 , ON DIVIDE BETWEEN STEWART AND FANTAIL GULCHES

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Silver Ore

Alteration

  • (Local) Ore Was Of The Blue Variety, Unoxidized

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Alkalic Volcanic Rock > Phonolite
    Rock unit name Phonolite Dike
    Rock description Phonolite Dike
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -103.81225, 44.33135
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Folding And Minor Faulting. To The East Is A North - South Trending Dike

Ore body information

  • Strike N - S
    Dip 90 DEG
    Length 228.6M
    Width 60.96M

Controls for ore emplacement

  • Developed In A Series Of Dolomite Beds Just Above The Basal Quartzite Of The Deadwood Formation In Two North - South Vertical Fractures Which Merge And Then Are Faulted

Comments on the geologic information

  • THE FOLDING AND FAULTING SPLIT THE ORE INTO SEVERAL BODIES.

Economic information about the deposit and operations

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

Mining district

District name Ruby Basin District

Ownership information

  • Type Owner-Operator
    Owner Golden Reward Gold Mining Co.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit SEVERAL ORE SHOOTS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1979 Barari, Rachel A. U.S. Geological Survey

Beyond USGS

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

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