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  3. Mineral Resource Data System (MRDS)

Keystone Mine

Past Producer in Clark county in Nevada, United States with commodities Gold, Copper, 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. 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. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10037224
MRDS ID M031116
Record type Site
Current site name Keystone Mine
Related records 10221928, 10310512

Geographic coordinates

Geographic coordinates: -115.52278, 35.83639 (WGS84)
Elevation 1463
Relative position 5 MILES DUE WEST FROM GOODSPRINGS, 12 MILES BY ROAD

Site location context

Political divisions (FIPS codes)

Clark(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Shenandoah Peak(quadrangle 1:24,000 scale)

Mesquite Lake(quadrangle 1:100,000 scale)

Kingman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ivanpah-Pahrump Valleys(hydrologic unit)

Central Nevada Desert Basins(hydrologic accounting unit)

Central Nevada Desert Basins(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
024S 058E 19 Nevada

Commodities

Commodity Importance
Gold Primary
Copper Primary
Silver Secondary

Materials information

Materials Type of material
Chrysocolla Ore
Copper Ore
Gold Ore
Limonite Ore

Analytical data

Result FINENESS OF THE GOLD 0.920 TO 0.930, UNCOMMONLY PURE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) -115.52278, 35.83639
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Large Scale Overthrusts
Type of structure Local
Structure description Broad Anticline, Keystone Thrust, Small Underground Faults

Ore body information

  • Strike N
    Dip 30 W

Controls for ore emplacement

  • Contact Of Porphyry With Dolomite

Comments on the geologic information

  • ORE IS ALONG PORPHYRY/DOLOMITE CONTACT, IN VEINS IN PORPHYRY AND IN THE DOLOMITE AND ALONG FAULTS. GOLD CHEIFLY ASSOCIATED WITH LIMONITE STAINED GREENISH CLAY AND IN THE DARK CHERT.

Economic information about the deposit and operations

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

Mining district

District name Goodsprings

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Nevada-Keystone Mining Co.
    First year 1906

Production statistics

  • Year 1947
    Period 1902 - 1947
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^.073 Oz/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Gold Gold 2g/mt

Comments on the production information

  • PRODUCTION PRIOR TO 1902 EST AT $380,000. BETWEEN 1931 - 1941 PRODUCTION INCLUDES ORE FROM BAREFOOT MINE. ORE SHOOTS MOST PRODUCTIVE WHERE VEIN WAS FLATTER THAN AVERAGE.

Workings at the site

  • Type of workings Underground
    Length 167.64M
    Overall depth 164.59M

Comments on the workings information

  • SOME OF THE SHOOTS ON THE UPPER CONTACT HAVE NOT BEEN EXPLORED BELOW THE 300 FOOT LEVEL.

Reference information

Comments on the other database information

  • $600,000

Bibliographic references

  • Deposit

    HEWETT, 1931 , GEOLOGY AND ORE DEPOSITS OF GOODSPRINGS QUAD, USGS PROF. PAPER 162 , P. 105 - 107 .

  • Deposit

    LONGWELL, C. R., PAMPEYAN, E. H., BOWYER, B., ROBERTS, R. J., 1965 , GEOLOGY AND MINERAL DEPOSITS OF CLARK CO. NEV. BUREAU OF MINES, BULL. 62 , P. 191 .

  • Deposit

    NBMG, 1994, MI-1993

  • Production

    NBMG MI-1993

General comments

Subject category Comment text
Deposit ALSO INCLUDES BAREFOOT MINE AS PART OF THE KEYSTONE GROUP ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1979 Harner, Joy L. (Roberts, Ralph J.) U.S. Geological Survey
Updater 01-SEP-1994 Li, Zhiping (Moyer, Lorre A.) 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.