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

Big Four

Past Producer in Lander county in Nevada, United States with commodities Gold, Silver
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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. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10044846
MRDS ID M232461
Record type Site
Current site name Big Four

Geographic coordinates

Geographic coordinates: -117.22372, 40.07574 (WGS84)

Site location context

Political divisions (FIPS codes)

Lander(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

The Cedars SW(quadrangle 1:24,000 scale)

Fish Creek Mountains(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Reese(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Lander

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 028N 042E 02 Nevada

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Ore

Alteration

  • (Local) Diorite Stock Has Been Intensely Alterred & Silicified

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Cane Spring Formation
    Rock description Cane Spring Formation
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -117.22372, 40.07574
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Diorite Intrudes Limestone Of The T2 Cane Spring Form.

Ore body information

  • General form TABULAR TO IRREGULAR MASSES

Controls for ore emplacement

  • Ore Formed By Replacement Along Faults, Fractures, Or Shears

Comments on the geologic information

  • THE DEPOSITS CONSISTS OF FREE GOLD WITH QUARTZ, OPALITE, JASPER, IRON OXIDES AND CALCITE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1929
Year of first production 1929

Mining district

District name Mccoy

Reference information

Bibliographic references

  • Production

    STAGER, H.K., 1977

General comments

Subject category Comment text
Deposit PROPERTY IS EXPLORED BY LIMITED UNDERGROUND WORKINGS. A SHIPPMENT OF 60 TONS OF ORE AVERAGED ABOUT $61 TO THE TON IN 1929. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1980 Kirkham, Richard A. 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.