Tl Shaft

Past Producer in Eureka county in Nevada, United States with commodities Silver, Gold, Lead
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. Mineral occurrence model information
  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. Land status
  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 10111444
MRDS ID M232336
Record type Site
Current site name Tl Shaft

Geographic coordinates

Geographic coordinates: -115.99673, 39.51853 (WGS84)
Elevation 1951

Site location context

Political divisions (FIPS codes)

Eureka(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Eureka(quadrangle 1:24,000 scale)

Newark Lake(quadrangle 1:100,000 scale)

Ely(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Diamond-Monitor Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Eureka

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 019N 053E 15 Nevada

Comments on the location information

  • UTM PRECISION 500M

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Primary

Materials information

Materials Type of material
Bindheimite Ore
Cerargyrite Ore
Gold Ore
Hemimorphite Ore
Mimetite Ore
Plumbojarosite Ore
Smithsonite Ore
Wulfenite Ore
Calcite Gangue
Goethite Gangue
Quartz Gangue

Mineral occurrence model information

Model code 72
USGS model code 19a
Deposit model name Polymetallic replacement
Mark3 model number 47

Host and associated rocks

  • Host or associated Associated
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Dunderberg Shale
    Rock description Dunderberg Shale
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Hamburg Dolomite
    Rock description Hamburg Dolomite

Nearby scientific data

(1) -115.99673, 39.51853

Economic information

Geologic structures

Type of structure Regional
Structure description Ruby Hill Thrust, Bowman Normal Fault
Type of structure Local
Structure description North-South Zone Of Faulting & Warping

Ore body information

  • General form TABULAR TO IRREGULAR STRATABOUND REPLACEMENT OREBODIES

Controls for ore emplacement

  • Permeability Of The Dolomite Due To Fracturing & Faulting

Comments on the geologic information

  • THE DEPOSIT IS WITHIN THE UPPER PLATE OF THE RUBY HILL THRUST BLOCK, THE ORE MINED WAS COMPLETELY OXIDIZED, HOWEVER PRIMARY SULFIDE ORE WAS FOUND AT THE 1,050 FOOT LEVEL. MINERALIZING FLUIDS TRAVELLED UP THE MAJOR FAULT ZONES, INTO THE PERMEABLE REACHED DOLOMITE ALONG SMALLER FAULTS AND FRACTURE ZONES, THE OVERLYING DUNDERBERG SHALE ALSO SERVED TO CAP THE ASCENDING FLUIDS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1954
Year of first production 1956

Mining district

District name Eureka District

Land status

Ownership category BLM Administrative Area

Workings at the site

  • Type of workings Underground
    Overall depth 320.04M

Comments on the workings information

  • SHAFT AND ASSOCIATED WORKINGS

Reference information

Bibliographic references

  • Deposit

    ROBERTS, MONTGOMERY, & LEHNER (1967) GEOLOGY & MINERAL RESOURCES OF EUREKA COUNTY NEV.,

  • Deposit

    NEV. BUREAU OF MINES BULL 64

  • Deposit

    U.S.B.M. (ELY) MILS NO 123, REF. NO 3201100087

  • Deposit

    NOLAN T.B. (1962) THE EUREKA MINING DISTRICT, NEV., USGS PP. 406

  • Deposit

    EUREKA CORPORATION LTD. ANNUAL RPT. 1954. N.B.M. DISTRICT FILE III ITEM 29

  • Production

    NOLAN, T.B., (1962)

General comments

Subject category Comment text
Deposit MAJOR FAULTS AND FRACTURES INTERSECTING REACTIVE HOST ROCKS CAPPED BY DUNDERBERG SHALE LOCALIZED ORE BODIES
Deposit PRODUCTION BEGAN IN 1956. THIRTY THOUSAND TONS VALUED AT 1.650,000 WAS PRODUCED BEFORE THE SHAFT WAS ABANDONED IN 1958. THE PROPERTY IS LOCATED NEAR THE CENTER OF THE ADAMS HILL AREA, ONE OF FIVE MINERALIZED BLOCKS IN THE DISTRICT. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1980 Kirkham, Richard A. Nevada Bureau of Mines and Geology

Beyond USGS

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

External references

Authoritative Nevada resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.