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NBMG Sample Site 2820

Prospect in Pershing county in Nevada, United States with commodities Silver, Gold
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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. 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 10047462
MRDS ID M242813
Record type Site
Current site name NBMG Sample Site 2820
Alternate or previous names Part of Fairview Group?
Related records 10125064

Geographic coordinates

Geographic coordinates: -118.7921, 40.45406 (WGS84)
Elevation 1670

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seven Troughs(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Granite Springs Valley(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Pershing

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 030N 028E 25 Nevada

Comments on the location information

  • ABOUT 0.6 MILE NNE OF MAIN FAIRVIEW MINE WORKINGS. . INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Silver Primary
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Intense Bleaching And Chertification, Opalization.

Analytical data

Result SAMPLE 2820 OF OPALIZED SULFIDE-BEARING MATERIAL FROM THE DUMP CONTAINS 5 % FE, 1 % MG, 2 % CA, 0.1 % TI, 500 PPM MN, 2 PPM AG, 20 PPM B, 1500 PPM BA, 1 PPM BE, 50 PPM CR, 10 PPM CU, 7 PPM MO, 7 PPM NI, 20 PPM PB, 5 PPM SC, 100 PPM SR, 30 PPM V, 15 PPM Y, 100 PPM ZR, AND 1.3 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) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -118.7921, 40.45406
ListMap

Economic information

Ore body information

  • General form TABULAR

Controls for ore emplacement

  • Fault Zone

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Seven Troughs District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • SHAFT AND OTHER WORKINGS

Comments on development

  • AREA JUST TO SOUTH WAS STAKED IN 1906 WITH MORE STAKING, SAMPLING, MAPPING, AND DRILLING AND TRENCHING DONE 1984.

Reference information

Bibliographic references

  • Deposit

    QUADE, JACK, 6 SEP 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    JOHNSON, M. G., 1977, NBMG BULL 89.

  • Deposit

    MINE SEARCH ANNUAL, 1984-1985, VOL VII, P. 222-224; METALS ECONOMICS GROUP, BOULDER, CO.

  • Deposit

    PRESS CLIPPINGS, 1984-1985.

General comments

Subject category Comment text
Deposit WORKINGS ARE ON A MAJOR FAULT ZONE WITH INTENSE BLEACHING AND ALTERATION INCLUDING CHERTIFICATION AND ALTERATION.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1987 La Pointe, D.D. (Tingley, J.V.) 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.

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.