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  3. Mineral Resource Data System (MRDS)

Spragg Mine

Past Producer in Lyon county in Nevada, United States with commodity 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10037693
MRDS ID M035866
Record type Site
Current site name Spragg Mine
Alternate or previous names Mason Valley Mines

Geographic coordinates

Geographic coordinates: -119.22931, 38.95185 (WGS84)
Elevation 1695
Relative position APPROX 2 MI WEST OF MASON NEV.

Site location context

Political divisions (FIPS codes)

Lyon(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Yerington(quadrangle 1:24,000 scale)

Smith Valley(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)

Geographic areas

Country State County
United States Nevada Lyon

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 025E 31 Nevada

Comments on the location information

  • JUST SOUTH OF THE BLUESTONE, COMPRISING 156 ACRES

Commodities

Commodity Importance
Copper Primary

Materials information

Materials Type of material
Chalcopyrite Ore

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 Triassic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -119.22931, 38.95185
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Numerous Faults

Ore body information

  • General form IRREGULAR

Controls for ore emplacement

  • Shear Zone

Economic information about the deposit and operations

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

Mining district

District name Yerington

Land status

Ownership category Private

Comments on the production information

  • PRODUCTION CREDITED TO MASON VALLEY MINES (RECORD NO. M035865) AVE. GRADE 4 TO 27 PERCENT CU

Workings at the site

  • Type of workings Surface
    Length 274.32M

Comments on the workings information

  • NUMEROUS SURFACE PITS AND MULTI-LEVEL ADITS ON CLAIMS TOTALLY 156 ACRES.

Reference information

Bibliographic references

  • Deposit

    MARCH 16 , 1907 , MINING AND SCIENTIFIC PRESS, P. 349

General comments

Subject category Comment text
Deposit REFER TO RECORD NO. M035865

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 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.