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  3. Mineral Resource Data System (MRDS)

Pilot Rock Mine

Past Producer in Mohave county in Arizona, United States with commodity Manganese
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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. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10027866
MRDS ID M004252
Record type Site
Current site name Pilot Rock Mine
Related records 10137601

Geographic coordinates

Geographic coordinates: -114.27579, 34.40976 (WGS84)
Relative position 6 MILES SE OF LAKE HAVASU CITY AIRPORT

Site location context

Political divisions (FIPS codes)

Mohave(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lake Havasu City South(quadrangle 1:24,000 scale)

Parker(quadrangle 1:100,000 scale)

Needles(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)

Federal lands

USBR(Federal land areas administered by USBR)

Geographic areas

Country State County
United States Arizona Mohave

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 012N 019W 06 Arizona

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone

Nearby scientific data

(1) -114.27579, 34.40976
ListMap

Economic information

Ore body information

  • General form ENECHELON FRACTURES
    Strike N
    Dip E
    Length 1609.3M
    Width 60.96M

Controls for ore emplacement

  • The Higher Grade Ore Occurs Along The Veins And Fractures In Lenses Ranging From 2 To 6 Feet Wide And From 20 To Several Hundred Feet Long. Lower Grade Material, Consisting Of Narrow Seams Of Manganese Oxide, Extends Outward For Several Feet Into The Walls Of The Veins.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1955

Mining district

District name Pilot Rock District

Land status

Ownership category State Park

Production statistics

  • Year 1955
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^Sorted Ore, 38 % Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Manganese Manganese 38wt-pct
  • Year 1955
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^Sorted Ore, 29.4 % Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Manganese Manganese 29wt-pct

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 18.29M

Comments on the workings information

  • 10 OPEN CUTS RANGE FROM A FEW FEET TO 12 FEET DEEP.

Reference information

Bibliographic references

  • Deposit

    FARNHAM, L.L. AND STEWART, L.A., 1958 , MANGANESE DEPOSITS OF WESTERN ARIZONA: U.S.B.M. INFORMATION CIRCULAR 7843 , P. 54

  • Production

    U.S.B.M. I.F. 7843 , P. 54 - 5

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1974 Johnson, K. H. U.S. Geological Survey
Updater 01-FEB-1979 Creasey, S. C. 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 Arizona resources

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