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Pontiac Mine

Producer in Gila county in Arizona, United States with commodities Manganese, Copper, Silver, Gold
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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 10027356
MRDS ID M002952
Record type Site
Current site name Pontiac Mine
Related records 10233971

Geographic coordinates

Geographic coordinates: -110.75986, 33.43508 (WGS84)
Elevation 1242
Relative position ABOUT 0.4 MILES EAST OF BLACK PEAK

Site location context

Political divisions (FIPS codes)

Gila(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Globe(quadrangle 1:24,000 scale)

Globe(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Carlos(hydrologic unit)

Upper Gila(hydrologic accounting unit)

Upper Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Gila

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 001N 015E 15 NE OF NE Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1979)

Commodities

Commodity Importance
Manganese Critical Primary
Copper Primary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore
Wad Ore
Calcite Gangue
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite > Diabase
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Mescal Limestone
    Rock description Mescal Limestone

Nearby scientific data

(1) -110.75986, 33.43508
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Ne Trending North Vein, Near Intersection With Nw Trending Mcgaw Fault.

Ore body information

  • General form IRREGULAR
    Strike N 65 E
    Dip NW
    Length 106.68M
    Width 15.24M

Controls for ore emplacement

  • Mn Oxides Occur On The Claim Near The Northeastern End Of A Long Persistent Fault Fissure , The North Vein, From Which Copper Silver Ores Have Been Mined To The Southwest

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1954
Year of last production 1954

Mining district

District name Globe Hills District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Miami Copper Co.
    First year 1961

Production statistics

  • Year 1955
    Material MN
    Accuracy Estimate
    Description Ap_Grade: ^29.6% Mn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Manganese Manganese 30wt-pct

Workings at the site

  • Type of workings Surface
    Overall length 4.57M
    Overall width 2.44M

Comments on the workings information

  • THE MORE PROMISING OUTCROPS ALONG THE ZONE HAD BEEN EXPLORED BY SHALLOW SCATTERED OPENCUTS AND SOME BULLDOZER STRIPPING.

Comments on development

  • ORIGINALLY ONE OF THE CLAIMS OWNED BY THE ARIZONA COMMERCIAL MINING CO.; PREVIOUS OPERATORS INCLUDE J.B.NORRIS, L.W.RACINE, A.R.BROCKWAY; MN WAS MINED ONLY IN 1954

Reference information

Bibliographic references

  • Deposit

    FARNHAM, L. L., STEWART, L. A., DELONG, C. W., 1961 , MANGANESE DEPOSITS OF EASTERN ARIZONA: USBM INFORMATION CIRCULAR 7990 , P. 69 .

  • Deposit

    ABGMT-USBM FILE DATA

  • Deposit

    USGS PP 342, 1962, PLATE I

  • Production

    USB OF MIC 7990 , P. 69

General comments

Subject category Comment text
Deposit THE PONTIAC CLAIM IS A MEMBER OF A LARGE GROUP OF PATENTED CLAIMS PRESENTLY OWNED BY MIAMI COPPER COMPANY. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1979 Hall, R. K. (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.