1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Big Twenty

Past Producer in Mineral county in Nevada, United States with commodity 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. 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. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10103589
MRDS ID M035041
Record type Site
Current site name Big Twenty

Geographic coordinates

Geographic coordinates: -118.92625, 38.97213 (WGS84)
Elevation 1951
Relative position NO. END WASSUK RANGE 6 MI W - NW OF SCHURZ

Site location context

Political divisions (FIPS codes)

Mineral(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hussman Spring(quadrangle 1:24,000 scale)

Walker Lake(quadrangle 1:100,000 scale)

Walker Lake(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Walker(hydrologic unit)

Walker(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Nevada Mineral

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 027E 23 Nevada

Comments on the location information

  • EAST OF SUMMIT

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Sulfur Gangue

Alteration

  • (Local) Sericitized Granodiorite

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -118.92625, 38.97213
ListMap

Economic information

Ore body information

  • Strike N 75 E
    Dip 90
    Width 1.22M

Controls for ore emplacement

  • Veins Assoc. With Fracture Zones, Along Which The Granodiorite Is Sericitized For A Width Of 1 To 2 Ft.

Comments on the geologic information

  • GEOL.DESC: VEIN FILLING IS QTZ AND IRON OXIDE

Economic information about the deposit and operations

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

Comments on the production information

  • A SMALL AMOUNT OF LOW-GRADE AU ORE WAS PRODUCED.

Comments on the workings information

  • 3 SUBPARRALLEL VEINS, DEVELOPED BY SEVERAL INCLINED SHAFTS ON THE VEIN AND BY A LONG CROSSCUT TUNNEL.

Reference information

Bibliographic references

  • Deposit

    HILL, J. M., 1915 , SOME MINING DISTRICTS IN NE CALIF. AND NW. NEV., USGS BULL 594

  • Deposit

    ROSS, D. C., 1961 , GEOLOGY AND MINERAL DEPOSITS OF MINERAL CO., NEV., NEV. BUREAU OF MINES, BULL 58

General comments

Subject category Comment text
Deposit CONTINUATION OF MOUNTAIN VIEW VEIN

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 Fiebelkorn, J. B. (Stewart, J. H.) 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.