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Locan Shaft

Past Producer in Eureka county in Nevada, United States with commodities Gold, Silver, Lead, Molybdenum
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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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  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 10044762
MRDS ID M232347
Record type Site
Current site name Locan Shaft
Alternate or previous names Eureka Consolidated Property

Geographic coordinates

Geographic coordinates: -115.98896, 39.50186 (WGS84)
Elevation 2012

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)

Geographic areas

Country State County
United States Nevada Eureka

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 019N 053E 22 Nevada

Comments on the location information

  • UTM PRECISION 100 M

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Molybdenum Tertiary

Materials information

Materials Type of material
Molybdenite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    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) -115.98896, 39.50186
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ruby Hill Normal Fault Cuts And Downdrops The Orebody

Ore body information

  • General form IRREGULAR
    Depth to bottom 609.6M

Controls for ore emplacement

  • Fractured Permeable Zones, Fault Zones

Comments on the geologic information

  • A CROSSCUT DRIVEN INTO THE FOOTWALL OF THE RUBY HILL FAULT FROM THE 840' LEVEL PENETRATED 450 FEET OF PROSPECT MTN QUARTZITE BEFOR ENTERING QUARTZ DIORITE. THE QUARTZITE CONTAINED SMALL AMOUNTS OF MOS2 THROUGHOUT. ON THE 1200 FOOT LEVEL MASSIVE PYRITE OCCURS ALONG A FAULT ZONE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1920
Year of first production 1920

Mining district

District name Eureka District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner-Operator
    Owner Eureka Consolidated Mines

Workings at the site

  • Type of workings Underground
    Length 137.16M
    Overall depth 609.6M

Comments on the workings information

  • 4 SHAFTS AND SEVERAL LEVELS OF UNDERGROUND WORKINGS

Comments on development

  • EXPLORTORY DRILLING DONE FROM 900 LEVEL IN 1940'S BY THE EUREKA CORP AND USBM. DRILLING REVEALED PB-ZN ORE 2000' BELOW SURFACE. FAD SHAFT WAS SUNK TO DEVELOP THE ORE LOCAN SHAFT WAS ORIGINALLY SUNKIN 1920

Reference information

Bibliographic references

  • Production

    NOLAN, T.B., (1962)

General comments

Subject category Comment text
Deposit ORE ZONES CONTROLLED BY FAULT ZONES, INTRUSIVE CONTACT
Deposit THE PROPERTY IS LOCATED WITHIN THE RUBY HILL AREA, THE RICHEST OF THE FIVE MINERALIZED BLOCKS IN THE DISTRICT. EXPLORATORY DRILLING WAS DONE FROM THE 900 LEVEL IN THE 1940'S BY THE EUREKA CORP AND USBM. THE DRILLING REVEALED P3-ZN SULFIDE MINERALIZATION 2000 FT. BELOW THE SURFACE. THE FAD SHAFT WAS SUNK TO TRY AND DEVELOPE THIS ORE ZONE. THE LOCAN SHAFT WAS ORIGINALLY SUNK PRIOR TO 1920 IN SEARCH FOR DOWNFAULTED ORE ALONG THE RUBY HILL FAULT ALONG WITH THE LAWTON SHAFT AND THE KK SHAFT THEY COMPRISED THE WORKINGS OF THE EUREKA CONSOLIDATED CO. MINES. ; 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

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.