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

T.L. Shaft

Past Producer in Eureka county in Nevada, United States with commodities Gold, Lead, Silver, Zinc
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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10149803
MAS/MILS ID 0320110087
Record type Site
Current site name T.L. Shaft
Alternate or previous names Adams Hill

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -115.9948, 39.52052 (WGS84)
Elevation 1999
Location accuracy 10(meters)

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 019 N 053 E 15 NWSENW Nevada

Commodities

Commodity Importance
Gold Tertiary
Lead Primary
Silver Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Cerussite Unknown
Galena Unknown
Plumbojarosite Unknown
Pyrite Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) -115.9948, 39.52052
ListMap

Economic information

Ore body information

  • Depth to top 290M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 IRREGULAR
    Type of Orebody #2 BRECCIA FILL
    Shape of Orebody #2 TABULAR
    Primary mode of Origin HYDROTHERMAL
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 SILICIFICATION
    Minimum Depth to Top 265
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316

Comments on the geologic information

  • ORE-BEARING SOLUTIONS ARE PROBABLY RELATED TO THE QUARTZ DIORITE STOCK AND THE QUARTZ PORPHYRY DIKES AND SILLS.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1953
Year of first production 1956

Mining district

District name Eureka District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Depaoli
    Home office Nevada
    Year 1976

Production statistics

  • Year 1957
    Description Smithsonite 367 M. Tons
  • Year 1957
    Description Cerussite 2026 M. Tons
  • Year 1957
    Description Malachite And Azurite 4 M. Tons
  • Year 1957
    Description Silver In Argentiferous Pb Minerals 430 Gm/M. Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 430g/mt
  • Year 1957
    Description Gold 18 Gm/M. Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Gold Gold 18g/mt
  • Year 1958
    Description Smithsonite 407 M. Tons
  • Year 1958
    Description Cerussite 2752 M. Tons
  • Year 1958
    Description Malachite And Azurite 8 M. Tons
  • Year 1958
    Description Silver In Argentiferous Pb Minerals 376 Gm/M. Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 376g/mt
  • Year 1958
    Description Gold 11 Gm/M. Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 11g/mt
  • Year 1959
    Description Smithsonite 28 M. Tons
  • Year 1959
    Description Cerussite 317 M. Tons
  • Year 1959
    Description Malachite And Azurite 2 M. Tons
  • Year 1959
    Description Silver In Argentiferous Pb Minerals 396 Gm/M. Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 396g/mt
  • Year 1959
    Description Gold 12 Gm/M. Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Gold Gold 12g/mt

Comments on the production information

  • THE AMOUNT OF TONS OF ORE MINED PER YEAR: 1957-11086.METRIC TONS, 1958-16621 METRIC TONS, 1959-1872 METRIC TONS. THE TOTAL AMOUNT OF TONS OF ORE IS IN EXESS OF 29,029 METRIC TONS.

Comments on the reserve resource information

  • THE AMOUNT GIVEN AS INFERRED ORE IS FOR THE ADAMS HILL AREA. NOT JUST THE TL SHAFT. THE ORE CONTAINS AS AND CL, MAKING SMELTING DIFFICULT. THIS COMBINED WITH METAL VALUES CAUSED CLOSURE OF THE MINE IN 1959.

Reference information

Bibliographic references

  • Deposit

    ROBERTS, R.J., MONTGOMERY, K.M., LEHNER, R.E., GEOLOGY AND

  • Deposit

    MINERAL RESOURCESOF EUREKA CO., NEV., 1967, NEV. BUMINES,

  • Deposit

    BULL. 64

  • Deposit

    NOLAN, T.B., THE EUREKA MINING DISTRICT, 1962, USGS PROF.

  • Deposit

    PAPER 406

  • Deposit

    JOHNSON, A.C., SHAFT-SLINKING METHODS AND COSTS AT THE T.L.

  • Deposit

    SHAFT, EUREKA CORP., LTD., EUREKA, NEV., USBMINFO. CIRC.

  • Deposit

    7835, 1958

  • Deposit

    RIDGE, J.D., ED., ORE DEPOSITS OF THE U.S., 1933-1967, SECT.

  • Deposit

    BY T.B. NOLAN, ET AL,T THE EUREKA MINING DISTRICT, NEV.,

  • Deposit

    CH. 48, PP. 966-991

General comments

Subject category Comment text
Deposit THE ARTICLE BY JOHNSON HAS INFORMATION ON PAST PRODUCTION COSTS, TYPE OF DRILLING, AND SOME OF THE PROBLEMS ENCOUNT- ERED.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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

External references

Maps centered on this site

Authoritative Nevada resources

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