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  3. Mineral Resource Data System (MRDS)

Four Jacks Claims

Occurrence in Pershing county in Nevada, United States with commodities Gold, Uranium
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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. Alteration
  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. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10047398
MRDS ID M242689
Record type Site
Current site name Four Jacks Claims
Alternate or previous names NBMG Sample Sites 2908, 2909, 2910, Penny, Dart

Geographic coordinates

Geographic coordinates: -119.27822, 40.13933 (WGS84)
Elevation 1494

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tohakum Peak NE(quadrangle 1:24,000 scale)

Kumiva Peak(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Pyramid-Winnemucca Lakes(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(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 Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 026N 024E 10 CENTER Nevada

Comments on the location information

  • BENCH CUT IN SADDLE ON RIDGE ; INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Uranium Primary

Materials information

Materials Type of material
Gold Ore
Uraninite Ore
Uranophane Ore
Gypsum Gangue
Limonite Gangue
Pyroxene Gangue
Quartz Gangue

Alteration

  • (Local) Metasediments Are Altered And Bleached In Part; Deuteric Alteration Of Dikes & Sills

Analytical data

Result RADIOACTIVITY: 500-10000 CPS OVER 1X1X1 FT
Result 1500 CPS OVER 2 X 100 X 10 FT (19 X BG)
Result NURE SAMPLES 066 OF IRON-STAINED HORNFELS WITH GYPSUM CONTAINS 1420 PPM CU308. SAMPLE 067 OF IRON-STAINED HORNFELS WITH YELLOW U MINERAL CONTAINS 386 PPM CU308. SAMPLE 068 OF HIGHGRADE U308 ORE (BLEACHED HORNFELS) CONTAINS 2220 PPM CU308. SAMPLE 069 OF QUARTZ FELDSTAR PEGMATITE CONTAINS 24 PPM CU308

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Associated
    Rock type Plutonic Rock > Pegmatite
  • Host or associated Host
    Rock type Metamorphic Rock > Hornfels
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Auld Lang Syne Group
    Rock description Auld Lang Syne Group
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone

Nearby scientific data

(1) -119.27822, 40.13933
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Central Part Of Eugeosynclinal Portion Of Basin And Range Of Nevada
Type of structure Local
Structure description Fracturing

Ore body information

  • General form IRREGULAR
    Strike (VEINS) NE TO N-S
    Dip STEEP
    Length 2413.95M
    Width 304.8M

Controls for ore emplacement

  • Bedding Fractures Localize U Minerals

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Nightingale District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • NUMEROUS PROSPECT PITS, TRENCHES, DOZER CUTS, DRILL PADS

Comments on development

  • EARLY WORK WAS FOR GOLD; LATER EXPLORED FOR URANIUM. LAST STAKING WAS IN 1971. LOCALLY, THE SEDIMENTS HAVE BEEN CUT BY NUMEROUS BENCHES THAT WERE USED AS DRILL PADS. ALL OF THIS WORK DATES FROM THE PERIOD OF URANIUM EXPLORATION, ALTHOUGH BOTH PERIODS OF WORK AND STAKING ARE IN CLEAR EVIDENCE. 12 CLAIMS.

Reference information

Bibliographic references

  • Deposit

    SMOUSE, DE FORREST, 1978, FIELD EXAMINATION OF URANIUM OCCURENCE

  • Deposit

    QUADE, JACK, 01 JUN 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    GARSIDE, L.J., 1973, NBMG BULL 81, P. 95

  • Deposit

    AEC PRELIM. RECONN. REPORT #3729, OPEN FILE.

General comments

Subject category Comment text
Deposit QUARTZ VEINS IN GRANODIORITE HAVE BEEN PROSPECTED FOR GOLD. SEVERAL OF THE VEINS IN PROSPECTS WERE SAMPLED IN SAMPLES 2908 AND 2910. SAMPLE 2909 WAS FROM A SMALL CROSS-CUTTING ADIT IN GRAYISH-BLACK SHALES WITH DISTINCT YELLOW COATING (U OXIDES?) ALONG BEDDING FRACTURES. THE CONTACT BETWEEN PEGMATITE AND HORNFELS IS THE MOST IMPORTANT AREA OF URANIUM CONCENTRATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-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.