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West Group

Past Producer in Pershing county in Nevada, United States with commodities Silver, Lead, Antimony, Copper
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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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10042495
MRDS ID M060304
Record type Site
Current site name West Group
Alternate or previous names NBMG Sample Site 2831

Geographic coordinates

Geographic coordinates: -118.40237, 40.36239 (WGS84)
Elevation 1463
Relative position 1/2 MI. NW OF ELECTRIC MINE

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Arabia(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(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 29N 32E 20 NE Nevada

Comments on the location information

  • ACCESSIBLE VIA FAIR TO POOR ROAD FROM THE EAST.; PREVIOUS QUAD DESIGNATION = OREANA (1956) 1:625000

Commodities

Commodity Importance
Silver Primary
Lead Primary
Antimony Critical Primary
Copper Tertiary

Materials information

Materials Type of material
Bindheimite Ore
Jamesonite Ore
Jarosite Gangue
Quartz Gangue

Alteration

  • (Local) Sericitization

Analytical data

Result SAMPLE 2831 OF QUARTZ VEIN MATERIAL CONTAINS 10 % FE, .07 % MG, .2 % CA, .05 % TI, 100 PPM MN, 150 PPM AG, +10000 -PPM AS, 200 PPM B, 500 PPM BA, 1.5 PPM BE, 100 PPM CR, 500 PPM-CU, 200 PPM MO, +20000 PPM PB, + 10000 PPM SB, 5 PPM SC, 10 PP-M SN, 150 PPM SR, 500 PPM V, 30 PPM ZR.

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -118.40237, 40.36239
ListMap

Economic information

Ore body information

  • Strike N15W-N20E
    Dip 45-60E
    Width 0.61M

Comments on the geologic information

  • THE VEINS ARE 1-24 INCHES THICK AND CONSIST PRINCIPALLY OF BRECCIATED WALL ROCK AND VARYING AMOUNTS OF QUARTZ. JAMESONITE OCCURS AS BLEBS AND SMALL PODS, EXCEPT IN THE DEEPER WORKINGS WHERE IT HAS BEEN CONVERTED TO BINDHEIMITE AND OTHER SB-OXIDES?

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Arabia District

Land status

Ownership category Private

Comments on the workings information

  • NUMEROUS ADITS, SHAFTS, OPEN CUTS, STOPING; MOST WORKINGS CAVED IN 1984

Reference information

Bibliographic references

  • Deposit

    JOHNSON, M.G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89

  • Deposit

    LAWRENCE, E.F., 1963, ANTIMONY DEPOSITS OF NEVADA; NBMG. 61, P. 160-161

  • Deposit

    DECKER, D.J., 1972, GEOLOGY AND ORE DEPOSITS OF THE ARABIA DISTRICT, PERSHING COUNTY, NEVADA; M.S. THESIS UNR

  • Deposit

    QUADE, JACK, 1984, FIELD EXAMINATION, 9-8-84.

General comments

Subject category Comment text
Deposit SIX MAJOR VEINS EXPOSED IN THIS AREA HAVE BEEN DEVELOPED BY NUMEROUS ADITS, SHAFTS, OPEN CUTS, AND STOPING. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Deposit SIX MAJOR VEINS 1-24 INCHES THICK AND CONSIST PRINCIPALLY OF BRECCIATED WALL ROCK AND VARYING AMOUNTS OF QUARTZ JAMESONITE OCCURS AS BLEBS AND SMALL PODS, EXCEPT IN THE DEEPER WORKINGS WHERE IT HAS BEEN CONVERTED TO BINDHEIMITE AND OTHER SB OXIDES. SMALL ADITS IN THE WEST GROUP ARE ALONG N20E PARALLEL STRUCTURES. MANY OF THE VEIN SYSTEMS ARE EXPOSED AT THE SUR-FACE ALONG OPEN PROSPECTS AND STOPES

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1973 Johnson, Maureen G. Nevada Bureau of Mines and Geology
Updater 01-JUL-1985 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-OCT-1980 Royse, Sue E. Nevada Bureau of Mines and Geology
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) U.S. Geological Survey

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.