1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Portland Mine

Producer in Mohave county in Arizona, 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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10088844
MRDS ID M241495
Record type Site
Current site name Portland Mine
Related records 10283253

Geographic coordinates

Geographic coordinates: -114.50192, 35.38084 (WGS84)
Elevation 622
Relative position 6 MILES SOUTH OF LOST CABIN SPRING; 45 MILES NW OF KINGMAN.

Site location context

Political divisions (FIPS codes)

Mohave(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Spirit Mountain NE(quadrangle 1:24,000 scale)

Davis Dam(quadrangle 1:100,000 scale)

Kingman(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Havasu-Mohave Lakes(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Mohave

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 023N 021W 15;14 E2 OF SE (15); SW OF SW (14) Arizona

Comments on the location information

  • ON SW SLOPE OF THE BLACK MOUNTAINS. ; INFO FROM LAND.ST :(1980)

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -114.50192, 35.38084
ListMap

Economic information

Ore body information

  • General form TABULAR
    Dip 35 E
    Thickness 3.66M
    Length 365.76M
    Width 48.77M

Controls for ore emplacement

  • Fracture

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Discovery year 1920
Discoverer J.E. Potter
Year of first production 1935
Year of last production 1941

Mining district

District name Pilgrim District

Land status

Ownership category Federal

Ownership information

  • Type Operator
    Owner Western States Minerals
    Home office Bullhead, Ariz
    First year 1988

Comments on the production information

  • IN 1988, OPEN PIT GOLD MINE WITH CYANIDE HEAP LEACH; RECOVERY BY CARBON ADSORPTION.

Workings at the site

  • Type of workings Surface/Underground
    Length 426.72M
    Overall depth 50.6M

Comments on the workings information

  • 100 FT SHAFT (INACCESSIBLE) 1-900 FT TUNNEL RUNS ON SURFACE LEVEL, SOUTH TUNNEL 200 FT LONG, NORTH TUNNEL 100 FT LONG, 100 FT DRIFT.

Comments on development

  • OPERATORS INCLUDED: GOLDEN STANDARDS MINING CORP. PIONEER MINING, INC., PORTLAND MINES, INC., DEE BROTHERS & WILSON, VANDYCE HAMREN. 1984-86: WESTERN STATES DRILLED ALTERATION ZONES TO DISCOVER ADDITIONAL RESERVES FOR CURRENT OPERATION.

Reference information

Bibliographic references

  • Deposit

    ADMR-PORTLAND MINE FILE.

  • Deposit

    USBM FILE DATA CLUSTER NO 1439-PORTLAND MINE.

  • Deposit

    USGS IC 6901, 1936, P. 48.

  • Deposit

    USBM-ABGMT FILE DATA.

  • Deposit

    NIEMUTH, N.J., 1987, ARIZONA MINERAL DEVELOPMENT 1984-1986: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES DIRECTORY 29, 46 P.

  • Deposit

    ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES, 1988, DIRECTORY OF ACTIVE MINES IN ARIZONA 1987-88: DIRECTORY, 13 P.

  • Deposit

    SAWYER, M.B., GURMENDI, A.C., DALEY, M.R., AND HOWELL, S.B., 1992, PRINCIPAL DEPOSITS OF STRATEGIC AND CRITICAL MINERALS IN ARIZONA: UNITED STATES BUREAU OF MINES SPECIAL PUBLICATION, 334 P.

  • Other Database

    CIMRI

  • Reserve-Resource

    NIEMUTH, 1987.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1982 Steinzig, Kathryn L. (Gest, Don E.) Arizona Bureau of Geology and Mineral Technology
Updater 01-NOV-1992 Orris, Greta J. U.S. Geological Survey
Updater 02-MAR-1994 Orris, Greta J. 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 Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.