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Nevada Crown Shafts

Prospect in Churchill county in Nevada, United States with commodities Silver, Gold, Lead, Zinc, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  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 10111473
MRDS ID M243064
Record type Site
Current site name Nevada Crown Shafts
Alternate or previous names NBMG Sample Sites 3974, 3975, Rex Claims #Nc1 & 2, Earlier Nevada Crown Claims

Geographic coordinates

Geographic coordinates: -118.18124, 39.15574 (WGS84)
Elevation 1719
Relative position ROAD TO THESE SHAFTS IS ALMOST GONE BUT TRACEABLE NORTH FROM BELL (CROWN) CANYON

Site location context

Political divisions (FIPS codes)

Churchill(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bell Canyon(quadrangle 1:24,000 scale)

Fallon(quadrangle 1:100,000 scale)

Reno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Dixie Valley(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

DOD(Federal land areas administered by DOD)

Geographic areas

Country State County
United States Nevada Churchill

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 034E Nevada

Comments on the location information

  • 2000 FT NE OF THE MAIN NEVADA CROWN ADIT. UTM IS FOR MAIN SOUTHERLY SHAFT. SAMPLE SITE 3975, SMALLER EXPLORATORY SHAFT HAS UTM N4334680 E398010. ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Silver Primary
Gold Primary
Lead Tertiary
Zinc Critical Tertiary
Molybdenum Tertiary

Materials information

Materials Type of material
Gold Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result SAMPLE 3974 FROM DUMP AND SHEAR ZONE OF LARGER (SOUTHERN) SHAFT CONTAINS 0.7% FE, 0.15% MG, 0.07% TI, 70 PPM MN, 1.5 PPM AG, 150 PPM BA, 30 PPM CU, 20 PPM PB, 15 PPM V, 15 PPM Y, 150 PPM ZR. SAMPLE 3975 FROM DUMP OF SMALLER (NORTHERN) SHAFT CONTAINS 2% FE, 0.07% MG, 0.03% TI, 70 PPM MN, 15 PPM AG, 200 PPM BA, 30 PPM CU, 150 PPM MO, 5 PPM NI, 200 PPM PB, 20 PPM V, 300 PPM ZN, 30 PPM ZR AND 1.1 PPM AU (BY AA ANALYSIS)

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -118.18124, 39.15574
ListMap

Economic information

Ore body information

  • Width 6.1M

Controls for ore emplacement

  • Shear Zones

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Fairview District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Spectrum Exploration, Le Roi Spriggs
    Home office Hawthorne, NV
    First year 1986

Workings at the site

  • Type of workings Underground
    Overall depth 76.2M

Comments on the workings information

  • 2 SHAFTS, ONE REPORTEDLY 250 FT DEEP WITH A LARGE DUMP, SUGGESTING POSSIBLE DRIFTS OR OTHER WORKINGS OFF THE SHAFT; SMALLER SHAFT 400 FT NORTH

Comments on development

  • WORKINGS DATE FROM 1906-1912 PERIOD. RECENT (1986) SAMPLING AND STAKING BY SPECTRUM EXPLORATION OF HAWTHORNE, NV AND SAMPLING BY TENNECO/ECHO-BAY

Reference information

Bibliographic references

  • Deposit

    QUADE, JACK AND TINGLEY, J.V., 18 OCT 86, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS

  • Deposit

    USDI, BLM MINING CLAIM RECORDS AND FILES

  • Deposit

    NBMG BULL 83, 1974,

General comments

Subject category Comment text
Deposit LARGER SOUTHERN SHAFT SUNK WAS SUNK ON INTERCEPT OF THE N-S SHEAR (VISIBLE ALONG EAST SIDE OF THE CANYON, AND THE LARGE N 70 W VEIN AT LEAST 20 FT THICK. ALL WORKINGS ARE IN ANDESITE. SHAFT IS ON EASTERN EDGE OF THE CANYON AND DUMP MATERIAL DOES NOT CONTAIN SIGNIFICANT VISIBLE MINERALIZATION. SAMPLE 3974 INCLUDES BOTH DUMP MATERIAL AND SHEAR ZONE MATERIAL WHICH INCLUDES BRECCIA, VUGGY OPEN-SPACE QUARTZ WITH SOME PYRITE. SECOND SMALLER SHAFT TO NORTH WAS SUNK ON A NE-TRENDING QUARTZ VEIN NEAR A N-S SHEAR. ONE VEIN TRENDS N 05 E, 70 E, INTERCEPTING A N 65 W VERTICAL VEIN 6-10 FT WIDE. VEIN MATERIAL CONSISTS OF SULFIDES WITH PYRITE IN MATRIX OF AN ANDESITE BRECCIA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1986 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology

Beyond USGS

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

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.