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Hidden Treasure Group Mine

Past Producer in Lawrence county in South Dakota, United States with commodities Gold, Silver, Fluorine-Fluorite
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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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  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 10104204
MRDS ID SD02078
Record type Site
Current site name Hidden Treasure Group Mine

Geographic coordinates

Geographic coordinates: -103.81114, 44.35857 (WGS84)
Elevation 1646
Relative position 1 MILE WEST 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 005N;005N 003E;002E 30,31;25,36 South Dakota

Comments on the location information

  • T5N R3E SEC 30 AND 31 AND ADJACENT PARTS OF T5N R2E SEC 25 AND 36

Commodities

Commodity Importance
Gold Primary
Silver Primary
Fluorine-Fluorite Critical Secondary

Materials information

Materials Type of material
Fluorite Ore
Gold Ore
Silver Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock
    Rock unit name Porphyry Intrusions
    Rock description Porphyry Intrusions
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cambrian

Nearby scientific data

(1) -103.81114, 44.35857
ListMap

Economic information

Ore body information

  • Thickness 3.66M

Controls for ore emplacement

  • Basal Conglomerate Of Deadwood Formation, Porphyry Intrusion

Comments on the geologic information

  • INTRUSIVE MINERALIZATION = TERT, PLACER MINERALIZATION = PREC

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of first production 1876

Mining district

District name Lead District

Ownership information

  • Type Owner-Operator
    Owner Hoosier Mining And Milling Co.

Workings at the site

  • Type of workings Underground
    Overall depth 85.34M

Comments on the workings information

  • ONE SHAFT AND NUMEROUS SHORT DRIFTS

Comments on development

  • 194 AC OF PATENTED CLAIMS, DEVELOPMENT EXTENDED DOWN INTO UNDERLYING PRECAMBRIAN SCHISTS AND WAS ASSOCIATED WITH TERTIARY INTRUSIONS.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THICKNESS = 2-12 FT (PLACER)

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.

External references

Maps centered on this site